Chemistry lab equipment for practical exams is the specific apparatus a candidate must have at the bench, and be able to use unaided, during an assessed laboratory examination. It is a narrower set than a full laboratory inventory: an exam bench needs the titration train, the qualitative-analysis set, the heating and support hardware, and the measuring items the prescribed experiments call for — not the whole catalogue. What separates an exam set from a teaching set is that every item must work first time, for every candidate, simultaneously, with no opportunity to improvise. The chemistry lab equipment range covers the apparatus side of that list.
| What chemistry lab equipment is needed for practical exams? Each candidate needs a burette with a working stopcock, a pipette with a safety filler, conical flasks, a volumetric flask, a funnel, a wash bottle, a retort stand with a burette clamp and boss head, a white tile, test tubes with a stand and holder, a spirit lamp or burner, a spatula, a glass rod, a dropper and filter papers. Shared across the room: an analytical or physical balance, a fume cupboard or extraction point, a water supply, and a hot plate or water bath where the content-based experiment needs one. Held in reserve at an issue desk: spare stopcocks, pipette fillers, test tubes, burettes and indicator solutions, because those are the items that fail mid-session. Build the set from the laboratory glassware range for the measuring items and the chemistry apparatus range for stands, clamps, burners and tongs. |
This guide covers equipment, not examination regulations. Marking schemes, permitted materials, invigilation arrangements and centre requirements are set by your examination board and change between sessions. Confirm the current session’s curriculum document and any circulars at the board’s own website before planning an examination. For CBSE, that is cbseacademic.nic.in; the corresponding laboratory manuals are published by NCERT.
What a chemistry practical exam actually assesses
A chemistry practical examination assesses a small number of named components, and knowing which they are tells you exactly which apparatus has to be flawless. In the CBSE senior secondary Chemistry course (Code 043), the practical component carries 30 marks against 70 for theory, and the 30 is divided into Volumetric Analysis 8 marks, Salt Analysis 8 marks, Content-Based Experiment 6 marks, Project Work 4 marks, and Class Record and Viva 4 marks. The same evaluation scheme applies at both Class 11 and Class 12, and the practical syllabus is allotted 60 periods (Source: CBSE Senior Secondary Curriculum, Chemistry Code 043, 2026-27 session; verified against published curriculum documents as of August 2026 — confirm the current edition before planning an examination).
Read as an equipment instruction, that breakdown is unambiguous. Volumetric analysis and salt analysis together carry 16 of the 30 marks, and they depend on two narrow, well-defined apparatus sets — the titration train and the qualitative-analysis set. If either set is short, worn or mismatched on exam day, the majority of the assessed practical component is at risk for every candidate in the room simultaneously. No other equipment failure in a school laboratory has that reach.
| Assessed component | Marks | Apparatus it depends on | Zone | Consequence if the apparatus fails |
| Volumetric Analysis | 8 | Burette with stopcock, pipette with safety filler, conical flasks, volumetric flask, funnel, wash bottle, stand with burette clamp, white tile, indicator | Candidate bench | The candidate cannot complete a titration at all; the full 8 marks are exposed |
| Salt Analysis | 8 | Test tubes and stand, test tube holder, spirit lamp or burner, glass rod, dropper, watch glass, spatula, filtration funnel and papers, wash bottle | Candidate bench | Contamination or breakage forces a restart mid-session with no spare time |
| Content-Based Experiment | 6 | Varies by experiment: hot plate or water bath, thermometer, chromatography materials, filtration set, crystallising dish, pH paper or meter | Bench plus shared service point | Usually the experiment simply cannot be run; substitution mid-exam is not permitted |
| Project Work | 4 | Assessed on submitted work; a shared instrument such as a pH meter or colorimeter usually enables it during the year | Shared service point | Affects the year’s work rather than exam day |
| Class Record and Viva | 4 | No apparatus; requires the practical record book | Not an equipment line | None, provided records were maintained |
CBSE chemistry practical components mapped to the apparatus each one depends on. Marks as published in the curriculum document; confirm the current edition.
One instruction inside the CBSE practical syllabus is worth acting on rather than reading past: it states that micro-chemical methods are available for several of the listed experiments and that such techniques should be used wherever possible. Micro-scale working reduces reagent volume, waste and exposure risk in a crowded examination room, and it also reduces the quantity of glassware that has to be simultaneously serviceable. Micro chemistry equipment is a syllabus-aligned option, not a compromise.
The Three-Zone Practical Exam Layout
The Three-Zone Practical Exam Layout is a way of organising equipment for an assessed session according to who controls it and what happens when it fails. Zone 1 is the candidate bench — everything a student must have in front of them and use unaided. Zone 2 is the shared service point — items used in rotation under supervision. Zone 3 is the issue and spares desk — the reserve a technician holds ready to swap in without stopping the session. Most laboratories plan Zone 1 carefully, plan Zone 2 loosely and do not plan Zone 3 at all, which is why a five-rupee stopcock can cost a candidate eight marks.
| Zone | What sits there | Who controls it | Quantity rule | What failure looks like |
| Zone 1 — Candidate bench | Titration train, qualitative-analysis set, support and heating hardware, small measuring and handling items | The candidate, unaided | One complete set per candidate, not per bench | A candidate cannot start, or restarts and runs out of time |
| Zone 2 — Shared service point | Balance, fume cupboard or extraction, water supply, hot plate or water bath, drying oven, distilled-water dispenser | Supervised rotation | One or two per room, sized by queueing not by candidate count | A queue forms and the slowest candidates lose working time |
| Zone 3 — Issue and spares desk | Spare stopcocks, pipette fillers, burettes, test tubes, indicator solutions, filter papers, wash bottles | The technician, on request | Reserve held as a percentage of the candidate count | A single failure stops one candidate for the rest of the session |
The Three-Zone Practical Exam Layout — what sits in each zone, who controls it, and what failure looks like.
Reviewer’s note — Arvind Kumar, Lab Equipment Specialist: “Every practical exam season I get the same two calls, and neither is about a broken instrument. It is a seized burette stopcock discovered on the morning, or a perished pipette filler bulb. Both cost a few rupees, both are invisible until someone tries to use them, and almost no school holds spares. Check them the week before, not the hour before.”
Zone 1: the titration train for volumetric analysis
The titration train is the apparatus set a candidate uses to perform volumetric analysis, and it is the single most exam-critical set in a chemistry laboratory because it carries 8 of the 30 practical marks and offers no workaround. Every item below must be present, serviceable and complete for every candidate at the same time. Specifications are given with units because that is how they should appear on a purchase order — a burette ordered without a class marking cannot be defended if a result is questioned.
| Item | Typical exam specification | What the candidate does with it | Most common error it causes | Site range |
| Burette with stopcock | 25 or 50 ml, graduated, class marked | Delivers titrant drop-by-drop and reads the meniscus at the endpoint | Parallax error on reading; leaking or seized stopcock | Lab Glassware |
| Pipette, one-mark | 10, 20 or 25 ml, class marked | Transfers a fixed volume of the solution to be titrated | Blowing out the final drop, which is a volume error | Lab Glassware |
| Pipette safety filler | Bulb or wheel type, sized to the pipette | Draws liquid without mouth pipetting | Perished bulb that will not hold suction | Request with the pipettes |
| Conical (Erlenmeyer) flask | 100 or 250 ml | Holds the solution being titrated and is swirled during addition | Splashing from over-vigorous swirling | Beakers and Flasks |
| Volumetric flask, stoppered | 100 or 250 ml, one-mark, class marked | Prepares the standard solution to the mark | Filling past the graduation mark | Beakers and Flasks |
| Funnel | 60 or 75 mm | Fills the burette without spillage | Left in the burette during titration, causing drips | Lab Glassware |
| Wash bottle | 250 or 500 ml | Rinses flask walls so no titrant is lost above the liquid | Failing to rinse the flask walls before the endpoint | Lab Plasticware |
| Retort stand with burette clamp and boss head | Rod 600 mm x 10 mm; clamp sized to the burette | Holds the burette vertical at readable height | Burette not vertical, or clamped too low to read at eye level | Chemistry Equipment |
| White tile or white paper | Standard bench size | Provides contrast for seeing the indicator colour change | Endpoint overshot because the change was not visible | Request with the set |
| Glass rod and dropper | Standard | Stirring and dropwise addition of indicator | Cross-contamination between solutions | Lab Glassware |
Zone 1 titration train — one complete set per candidate, with the skill each item assesses and the error it most often causes.
Two specification points on this set are worth insisting on at purchase. Volumetric items should carry a visible class marking on the vessel, because an unmarked burette or pipette cannot be shown to meet any tolerance if a result is later questioned; the ISO standards buyers most often name are ISO 385 for burettes, ISO 648 for single-volume pipettes and ISO 1042 for one-mark volumetric flasks, and the current edition of each should be confirmed before it enters a purchase specification. And stopcocks should be available as separate spares, because the stopcock is the part that fails and replacing a whole burette to fix one is an avoidable cost.
Zone 1: the qualitative analysis set for salt analysis
The qualitative analysis set is the apparatus a candidate uses to identify the ions in an unknown salt, and it carries a further 8 marks of the 30. Its defining characteristic is volume rather than complexity: salt analysis is a sequence of small tests run in test tubes, so a candidate gets through more glassware in one session than in any other practical, and contamination between tests is the dominant source of lost marks. Cleanliness and quantity matter more here than specification.
| Item | Typical exam quantity per candidate | What the candidate does with it | Most common error it causes | Site range |
| Test tubes | 10-12, rimmed | Holds each preliminary and confirmatory test | Carry-over contamination from an unrinsed tube | Test Tubes and Thermometer Pockets |
| Test tube stand | 1, multi-hole | Holds tubes in a readable sequence during the scheme | Losing track of which tube held which test | Chemistry Equipment |
| Test tube holder | 1 | Holds a tube safely while heating | Burns, or a dropped tube during heating | Chemistry Equipment |
| Spirit lamp or Bunsen burner | 1 | Heats tubes for gas evolution and confirmatory tests | Insufficient heat, or an unstable flame | Chemistry Equipment |
| Glass rod | 1-2 | Stirring and transferring drops for flame tests | Contamination when the same rod is reused unwashed | Lab Glassware |
| Dropper or teat pipette | 2-3 | Adds reagents dropwise | Reagent bottle contamination from a shared dropper | Lab Plasticware |
| Watch glass | 1-2 | Evaporation and spot tests | Sample loss during evaporation | Lab Glassware |
| Spatula | 1 | Transfers the solid salt sample | Cross-contamination between samples | Chemistry Equipment |
| Filtration funnel and filter papers | 1 funnel, several papers | Separates a precipitate from solution | Torn or badly folded paper letting precipitate through | Lab Glassware |
| Wash bottle with distilled water | 1 | Rinses tubes and washes precipitates | Rinsing with tap water, invalidating a test | Lab Plasticware |
| Evaporating dish or crucible | 1 where the scheme requires it | Evaporation and dry heating | Cracking from thermal shock | Porcelain Ware |
Zone 1 qualitative analysis set — one complete set per candidate. Quantities assume a full sequence of preliminary and confirmatory tests.
The practical lesson from years of exam-day observation is that test tubes are the item to over-supply. A candidate who runs out mid-scheme either starts washing tubes under time pressure — which is where contamination enters — or asks for replacements, which costs minutes. Issuing twelve rather than eight per candidate costs very little and removes the most common cause of a lost salt-analysis mark. Test tubes are also the highest-breakage item in the whole laboratory, which makes them the first thing to hold in reserve at Zone 3.
Zone 1: apparatus for the content-based experiment
The content-based experiment carries 6 marks and its apparatus depends entirely on which experiment your centre sets, which is why it cannot be planned from a generic list. The CBSE practical syllabus covers areas including surface chemistry, chemical kinetics, thermochemistry, electrochemistry, chromatography, preparation of inorganic and organic compounds, and tests for functional groups at Class 12, and basic laboratory techniques, purification and characterisation, pH experiments and equilibrium at Class 11. Work out which experiments your centre will set, then equip for those specifically rather than for all of them.
| Experiment area | Core apparatus needed | Shared item required | Practical caution for exam use |
| Surface chemistry (sol preparation, dialysis, emulsions) | Beakers, conical flasks, glass rod, dropper, filter papers, watch glass | Hot plate or water bath | Sols need preparation time; check the schedule allows it within the session |
| Chemical kinetics (reaction rate, effect of concentration and temperature) | Conical flasks, measuring cylinders, stopwatch or timer, thermometer, white tile marked with a cross | Water bath for temperature control | Timing accuracy dominates the result; issue one timer per candidate, not per bench |
| Thermochemistry | Calorimeter or insulated vessel, thermometer, measuring cylinders, stirrer | Balance | Thermometer resolution in degrees C determines whether the effect is measurable |
| Chromatography | Chromatography paper or column, capillary tubes, developing jar with lid, solvent | Fume extraction where the solvent requires it | The jar must be sealed and undisturbed; bench vibration ruins the run |
| pH and equilibrium experiments | pH paper or universal indicator, test tubes, droppers, beakers | pH meter where a numeric value is required | A pH meter needs buffer calibration on the morning, not the week before |
| Preparation and purification (crystallisation, melting and boiling point) | Beakers, evaporating dish, crystallising dish, filtration set, capillary tubes, thermometer | Hot plate or water bath; drying oven | Crystallisation needs cooling time; build it into the session length |
| Basic laboratory techniques (glass cutting, bending, boring a cork) | Glass tubing and rod, file, cork borer set, burner | Burner or gas supply | Supervise closely; this is the highest cut-risk activity in the syllabus |
| Functional group and element detection | Test tubes, holder, burner, droppers, spatula | Fume extraction for the fusion tests | Sodium fusion tests need extraction and close supervision |
Apparatus by content-based experiment type. Confirm which experiments your centre sets before equipping; specifications and experiment lists change between curriculum editions.
Zone 2: the shared service points and how to size them
Zone 2 is the set of items used in rotation by the whole cohort, and the number you need is set by queueing rather than by candidate count. One good analytical balance serves a room; three mediocre ones do not serve it better, they just create three queues. The design question for every Zone 2 item is how long each candidate occupies it and how many times during the session — multiply those together and compare with the session length, and the required quantity falls out.
| Service point | Why it is shared | Sizing question to ask | Exam-day readiness check |
| Balance (analytical or physical) | High unit cost; short occupancy per candidate | How many weighings per candidate, at how many minutes each? | Calibrate on the morning and verify with a known reference mass |
| Fume cupboard or extraction point | Fixed installation | Which prescribed experiments produce vapour, and how many candidates run them at once? | Confirm airflow before the session, not during it |
| Hot plate or water bath | Powered; needs supervision | How many candidates need heating simultaneously at peak? | Reach setpoint and confirm it holds with an independent thermometer |
| Distilled or deionised water supply | Bulk item | How much per candidate across rinsing and solution preparation? | Fill every wash bottle before candidates enter the room |
| Drying oven | Fixed, slow-cycle | Does any set experiment need drying within the session? | Preheat; a cold oven cannot recover inside a session |
| pH meter or colorimeter | Instrument-grade; used briefly | Is a numeric reading required, or will indicator paper do? | Two-buffer calibration on the morning of the exam |
| Wash-up and waste point | Fixed installation | Where does contaminated glassware go without crossing working benches? | Empty and clear before the session starts |
Zone 2 shared service points, sized by queueing rather than by candidate count.
Zone 3: the issue and spares desk — the zone nobody plans
Zone 3 is a reserve of consumable and failure-prone items held by the technician and issued on request during the session, and it is the cheapest insurance in a chemistry laboratory. Its purpose is narrow: to convert an equipment failure from a lost practical into a two-minute interruption. The items belonging in Zone 3 are not chosen by value; they are chosen by how often they fail and how completely a failure stops a candidate.
| Reserve item | Why it is held | Suggested reserve | How quickly it must reach the candidate |
| Test tubes | Highest-breakage item in the laboratory | 20-25% of issued quantity | Immediately |
| Burette stopcocks and keys | Seizes or leaks; a burette without one is unusable | 10% of candidate count | Immediately |
| Pipette safety fillers | Rubber perishes invisibly between sessions | 10-15% of candidate count | Immediately |
| Complete burettes | Breakage during handling ends the titration | 5-10% of candidate count | Immediately |
| Pipettes | Tip chipping makes delivery unreliable | 5-10% of candidate count | Immediately |
| Conical flasks | Breakage mid-titration | 10% of candidate count | Immediately |
| Filter papers | Consumed faster than estimated; tearing is common | One spare box | Immediately |
| Indicator solutions | Contamination or depletion at the reagent bench | One prepared spare bottle per indicator in use | Within minutes |
| Wash bottles, filled | Runs dry mid-session | 10% of candidate count, pre-filled | Immediately |
| Boss heads and burette clamps | Screw threads strip under repeated tightening | 10% of candidate count | Immediately |
| Glass rods, droppers, spatulas | Dropped and broken; trivially cheap | 20% of issued quantity | Immediately |
Zone 3 reserve holding for a practical examination session. Reserve percentages are a planning heuristic, not sourced data — set your own from your replacement records.
The reserve percentages above are a planning heuristic offered as a starting point, not a sourced figure. The defensible way to set them is to record what was actually issued from Zone 3 across one full examination season and use that as next year’s reserve. Two seasons of that record will give a school a better number than any published rule of thumb, and it takes a technician about a minute per session to maintain.
What students must be able to do with the equipment, not just recognise
A practical examination assesses handling skill, not equipment recognition, and the distinction matters for how a laboratory is stocked as well as how students are taught. A candidate who has only ever watched a demonstration will lose marks on technique with perfectly good apparatus in front of them, which is an argument for having enough sets that every student practises individually during the year rather than watching in groups of four. The table below lists the handling skills each core item tests and the technique error that most often costs marks.
| Apparatus | Skill being assessed | Technique error that costs marks | How to practise it during the year |
| Burette | Filling without air bubbles, controlling the stopcock to single drops near the endpoint, reading the meniscus at eye level | Air bubble left in the jet; parallax error on the reading | Repeat titrations to a known endpoint until readings agree within a consistent range |
| Pipette and safety filler | Drawing to the mark, touching off, delivering without blowing out the residual drop | Blowing out the last drop, which adds volume | Deliver water repeatedly onto a balance and compare masses |
| Volumetric flask | Making up to the mark with the meniscus base on the graduation, inverting to mix | Overshooting the mark; failing to invert and mix | Prepare standard solutions from weighed solid, not from stock |
| Conical flask | Swirling continuously without splashing, rinsing the walls before the endpoint | Losing titrant on the flask wall above the liquid | Practise with a coloured indicator so losses are visible |
| Test tube and holder | Heating evenly with the mouth pointed away, avoiding bumping | Directing the tube mouth at a neighbour; sudden bumping and loss of sample | Supervised heating drills before the practical block begins |
| Spirit lamp or burner | Lighting safely, adjusting flame, extinguishing correctly | Leaving an unattended flame near reagent bottles | Include in the first laboratory session of the year, every year |
| Filtration set | Folding and seating the paper, decanting without disturbing the precipitate | Torn paper; precipitate passing into the filtrate | Practise with a visible precipitate so failure is obvious |
| Balance | Taring, weighing by difference, transferring without spillage | Weighing directly onto the pan; spillage inside the balance | Weekly weighing tasks throughout the year, not exam week |
Handling skills assessed by each core item of exam apparatus, and the technique errors that most often cost marks.
One equipment consequence follows directly from that table. If a laboratory has enough sets for students to work in pairs but not individually, half the cohort practises the physical skill and half watches it — and the examination assesses each candidate individually. Sizing volumetric glassware from student pairs plus a breakage allowance, rather than from bench count, is the difference between a cohort that has done the technique and one that has seen it done.
Original asset: the Practical Exam Bench Card
The Practical Exam Bench Card is the original proof asset of this guide: a single card a laboratory technician completes for each candidate bench before an examination session, converting bench preparation from memory into a record. It is deliberately short enough to complete in a few minutes per bench and specific enough to catch the failures that actually occur. Complete it the day before the session, not on the morning, so that anything failing can still be replaced. Keep the completed cards with the practical records.
| # | Check | How to verify it | Pass criterion | If it fails |
| 1 | Bench number and candidate set recorded | Write the bench number on the card and match it to the set laid out | Card and bench agree | Re-lay the set before continuing |
| 2 | Burette present, clean and free of chips | Visual inspection of rim, tip and barrel against the light | No chip, no star crack, graduations legible | Replace from the Zone 3 reserve |
| 3 | Burette stopcock turns freely and holds water | Fill with water, close, leave 5 minutes, inspect the tip | Turns smoothly through full travel; no drip | Replace the stopcock, or the burette |
| 4 | Burette jet free of air when filled | Fill and run down; watch the jet | No trapped bubble at the jet | Re-fill with the tap fully open to clear the jet |
| 5 | Pipette present, tip undamaged, class marking legible | Visual inspection of the tip and the marking | Tip intact, class and capacity readable | Replace from reserve |
| 6 | Pipette safety filler holds suction | Draw water to the mark and hold for 10 seconds | No drop in the meniscus | Replace the filler — do not issue the bench without one |
| 7 | Volumetric flask has its stopper and a legible mark | Seat the stopper; check the graduation | Stopper seats; mark clearly visible | Replace from reserve |
| 8 | Conical flasks present and undamaged | Inspect rims and bases | No chips or cracks | Replace from reserve |
| 9 | Retort stand stable, rod vertical, clamp at readable height | Stand on the bench and press the rod laterally | No rocking; burette readable at eye level when clamped | Tighten or replace the boss head |
| 10 | Boss head screw engages fully | Turn the screw in and out through full travel | Threads engage smoothly | Replace the boss head from reserve |
| 11 | Test tubes counted and clean | Count against the issue number; check for residue | Full count, no residue, no chipped rims | Top up from reserve |
| 12 | Test tube stand and holder present | Visual check | Both present and undamaged | Replace from reserve |
| 13 | Burner or spirit lamp lights and holds a flame | Light it; adjust through the full range; extinguish | Lights first time, flame stable, control free | Refill the lamp or replace the burner |
| 14 | Wash bottle filled with distilled water | Lift and squeeze | Full, flows freely, nozzle clear | Refill; confirm the source is distilled, not tap |
| 15 | Funnel, white tile, glass rod, dropper, spatula present | Visual check against the kit list | Full set present | Top up from reserve |
| 16 | Filter papers issued and folded stock available | Count | At least the issue quantity plus spares | Top up from reserve |
| 17 | Bench surface clear, dry and free of previous residue | Wipe and inspect | Clean and dry | Clean before laying the set |
| 18 | Safety provision at the bench | Check eye protection is issued and the nearest spill and first-aid point is stocked | Eye protection present; spill point stocked | Do not open the session until resolved |
The Practical Exam Bench Card. Complete one per candidate bench the day before the session. Original to this guide.
Two of those checks catch most of what goes wrong. Check 3, the stopcock water-hold test, takes five minutes across a whole room if the benches are filled together, and it is the single highest-yield check on the card. Check 6, the pipette filler suction test, catches perished rubber that is completely invisible to a visual inspection. Neither test needs any equipment beyond water and a few minutes, and between them they prevent the two failures that most often interrupt a chemistry practical examination.
Safety equipment for a chemistry practical examination
Safety provision for a practical examination has to be sized for a full cohort working simultaneously and unsupervised at the individual level, which is a different situation from an ordinary teaching session. During a normal practical a teacher circulates and intervenes; during an examination candidates work alone, under time pressure, often performing a technique they are nervous about. That combination raises the value of passive provision — eye protection issued to every candidate, clear bench spacing, accessible spill and first-aid points — over supervision alone.
| Provision | Sizing rule | Why examination conditions raise its importance | Readiness check before the session |
| Eye protection | One per candidate, issued not shared | Candidates cannot leave a bench to fetch protection mid-experiment | Count against the candidate list; inspect for cracked lenses |
| Fume extraction | Sized to the number of candidates running vapour-producing steps at peak | Simultaneous working concentrates vapour that a staggered class would not | Confirm airflow before candidates enter |
| Spill provision | At least one stocked point per laboratory, reachable without crossing benches | A spill under time pressure is more likely to be ignored than reported | Check stock and that the route to it is clear |
| First-aid provision including eyewash | Per the institution’s policy; reachable from every bench | Cuts from glass tubing work and burns from heating are the usual incidents | Check stock and expiry dates |
| Bench spacing and gangways | Set by room layout and candidate count | Crowded gangways turn a minor slip into a breakage or a burn | Walk every gangway before the session |
| Waste and broken-glass containers | One per laboratory minimum, clearly marked | Candidates will otherwise put broken glass in a general bin or leave it on the bench | Empty before the session starts |
| Mercury-free thermometers | Substitute wherever a thermometer is required | Mercury-containing measuring devices are subject to phase-out under the Minamata Convention; a breakage in a full examination room is a serious incident | Confirm no mercury thermometers are in the issued sets |
Safety provision for a chemistry practical examination, sized for a full cohort working simultaneously.
One equipment decision inside that table deserves acting on outside exam season. Where a laboratory still holds mercury-in-glass thermometers, an examination room full of candidates is the worst possible place for one to break. Mercury-containing non-electronic measuring devices, including thermometers, fall within the scope of the Minamata Convention on Mercury, and the practical answer for a school is to replace them with alcohol or digital alternatives on a planned basis rather than after an incident. Confirm your own jurisdiction’s position before disposing of existing stock, because mercury disposal is itself regulated.
Six mistakes schools make when equipping for practical exams
1. Counting sets by bench instead of by candidate
An examination assesses each candidate individually, so Zone 1 has to be counted per candidate, not per bench. A laboratory with twelve benches running twenty-four candidates in a single session needs twenty-four complete titration trains, not twelve. Schools that count by bench discover the gap on the morning of the examination, when the only remedy is splitting the cohort into extra sessions.
2. Checking the equipment on the morning of the exam
A check that finds a seized stopcock an hour before candidates arrive has found a problem nobody can now fix. Run the Bench Card the day before at the latest, so that a failed item can be replaced from reserve or ordered from a local supplier. The check takes a few minutes per bench and it is only useful if there is still time to act on what it finds.
3. Holding no reserve at all
Most school laboratories hold no Zone 3 reserve, which means any single failure removes a candidate from the examination for its remaining duration. The items worth holding are cheap and predictable — stopcocks, pipette fillers, test tubes, filter papers, wash bottles — and a reserve costs a fraction of one instrument. The reason it is skipped is that reserves do not appear on an equipment list; they have to be deliberately budgeted.
4. Buying volumetric glassware without a class marking
Volumetric items should carry a visible class marking on the vessel, because unmarked glassware cannot be shown to meet any tolerance if a candidate’s result is later questioned. This is an ordering decision, not a laboratory one — the tolerance class and the requirement that it be marked belong on the purchase order, per line. It costs nothing to specify and cannot be retrofitted.
5. Letting students practise in groups of four
The examination assesses individual handling technique, so a student who spent the year watching three classmates titrate has not practised the skill being assessed. Group practicals are a consequence of equipment shortage rather than a teaching choice, which makes the size of the volumetric glassware order an educational decision and not only a budget one. Order for pairs at worst, and for individuals where the budget allows.
6. Treating consumables as an afterthought
Filter papers, indicator solutions, distilled water, corks and stoppers are individually trivial and collectively decisive on exam day, yet they are the line most often left out of a first-year budget. Estimate consumables per candidate per session, multiply by sessions per year, and order a full year with a re-order point rather than buying in term-time panic.
Related guides
→ What are the 5 pieces of scientific laboratory safety equipment?
→ How do you maintain laboratory equipment to extend its life?
→ What is the most common scientific laboratory equipment?
→ What is good scientific laboratory equipment made of?
→ How do I set up a low-cost science lab for a rural school?
→ What are the 7 steps of the scientific method?
Frequently asked questions
Which glassware is essential for chemistry practical exams?
Every candidate needs a burette, a one-mark pipette with a safety filler, conical flasks, a volumetric flask, a funnel, test tubes, a watch glass and a wash bottle. The burette and pipette are the critical pair because volumetric analysis carries 8 of the 30 practical marks and cannot be attempted without them. Specify a visible tolerance class marking on every volumetric vessel at the time of ordering, since unmarked glassware cannot be shown to meet any tolerance if a result is questioned later. Porcelain items such as evaporating dishes and crucibles are needed where the scheme involves evaporation or dry heating. Browse the laboratory glassware and porcelain ware ranges to assemble a candidate set.
Which equipment is needed for titration experiments in a practical exam?
A titration needs a burette with a working stopcock, a one-mark pipette with a safety filler, a conical flask, a volumetric flask for the standard solution, a funnel for filling, a wash bottle, a retort stand with a burette clamp and boss head, a white tile for seeing the colour change, and the indicator. The stopcock and the pipette filler are the two components that fail most often and the two that stop a titration completely, so hold spares of both. Clamp the burette so the meniscus sits at the candidate’s eye level — a burette clamped too low produces parallax errors that look like technique failures.
What chemistry equipment do students need to know how to use, not just recognise?
Students are assessed on handling skill, so they must be able to fill a burette without trapping air, control a stopcock to single drops near the endpoint, read a meniscus at eye level, deliver from a pipette without blowing out the residual drop, make a volumetric flask up to the mark and invert it to mix, heat a test tube evenly with the mouth directed away, fold and seat a filter paper, and weigh by difference on a balance. Recognition is not assessed; technique is. That is why individual rather than group practice during the year matters, and why the number of complete sets a laboratory owns is an educational decision as much as a budget one.
Is chemistry practical exam equipment safe for school students to use?
Standard school chemistry apparatus is designed for student use, but examination conditions raise the risk profile because a full cohort works simultaneously under time pressure with individual rather than continuous supervision. Issue eye protection to every candidate rather than sharing it, confirm fume extraction is working before candidates enter, keep spill and first-aid points reachable without crossing benches, and provide a marked broken-glass container. Replace any mercury-in-glass thermometers with alcohol or digital alternatives on a planned basis, since mercury-containing measuring devices fall within the scope of the Minamata Convention and a breakage in a full examination room is a serious incident.
How much equipment does a school need to run a chemistry practical exam?
Count Zone 1 per candidate, Zone 2 by queueing and Zone 3 as a percentage reserve. One complete titration train and one qualitative-analysis set per candidate sitting in the session, not per bench; one or two shared balances, extraction points and heating stations sized by how long each candidate occupies them and how often; and a reserve of roughly 10 to 25 per cent for the failure-prone items — test tubes, stopcocks, pipette fillers, filter papers and wash bottles. No rupee figure is published here because chemistry apparatus is quoted against material, capacity, tolerance class, pack size and order volume; send your candidate count and prescribed experiment list to request an itemised quotation.
What is the difference between a teaching set and an examination set of chemistry equipment?
A teaching set has to work well enough for a supervised demonstration; an examination set has to work first time, for every candidate, at the same moment, with no chance to improvise. That difference changes three things. Quantity moves from per bench to per candidate, because each candidate is assessed individually. Condition moves from acceptable to verified, because there is no time to substitute a leaking burette mid-session. And a reserve becomes necessary rather than optional, since a failure during an examination cannot wait for the next lesson. The apparatus itself is usually the same; the standard it is held to is not.
Key takeaways
1. Volumetric analysis and salt analysis together carry 16 of the 30 practical marks in CBSE senior secondary Chemistry (Code 043), so the titration train and the qualitative-analysis set are the two apparatus sets that must be flawless on exam day (CBSE Senior Secondary Curriculum, Chemistry Code 043; verified August 2026 — confirm the current edition).
2. Count Zone 1 equipment per candidate rather than per bench, because a practical examination assesses each candidate individually and a shared set means half the cohort is watching.
3. Hold a Zone 3 reserve of the items that actually fail — burette stopcocks, pipette safety fillers, test tubes, filter papers and wash bottles — because a five-rupee component can otherwise cost a candidate eight marks.
4. Run the bench readiness check the day before the session, not on the morning, so that a failed item can still be replaced; the stopcock water-hold test and the pipette filler suction test catch most of what goes wrong.
5. Specify a visible tolerance class marking on every volumetric vessel at the time of ordering, since unmarked glassware cannot be shown to meet any tolerance if a candidate’s result is later questioned.
6. The CBSE practical syllabus states that micro-chemical methods should be used wherever they are available, which reduces reagent volume, waste and exposure risk in a crowded examination room.
About Jainco Lab
Jainco Lab is the product brand of Jain Scientific Suppliers, a manufacturer and exporter of educational, scientific and analytical laboratory equipment based at 2475-84, Hargolal Road, Ambala Cantt, Haryana, India, and stated on its own pages as established in 1982. The published range covers chemistry apparatus and teaching aids, laboratory glassware, porcelain ware and plasticware, physics, biology and educational laboratory equipment, science kits, scientific and analytical instruments, anatomical models and vocational training equipment, supplied to schools, colleges, universities, dealers and export buyers. The company states that it operates ISO 9001 quality management and ISO 14001 environmental management systems with CE-aligned product controls; these are manufacturer-stated, and institutional buyers should request the certificate number, issuing body, scope and expiry and verify them independently. Specification sheets, candidate-set quotations and tender documentation are requested through the tenders and OEM page or the contact page.
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