Assessment sheet · sign-off clipboard
| Item | Hazard | Risk | Who | Control | Emergency | |
|---|---|---|---|---|---|---|
Hydrogen peroxide (up to 20 vol) Chemical | High | Corrosive to eyes, bleaches and burns skin, oxygen released under pressure | You and others nearby | Goggles and gloves, dilute solutions only, keep stoppered and out of sunlight, never in a sealed tube | Rinse eyes at the eye wash 15 min and get first aid; wash skin with plenty of water | |
Amylase / protease / catalase enzyme solutions Chemical | Med | Irritation to eyes and skin; enzyme powder causes breathing allergy | You | Goggles, use ready made solutions rather than powder, no aerosols, wash hands after handling | Rinse eyes 10 min, wash skin, tell the teacher if breathing is affected | |
Beakers (100–500 ml) Glassware | Med | Cuts from broken glass; spills of hot or irritant liquid | You and others nearby | Carry with two hands, keep away from the bench edge, do not overfill | Tell the teacher; mop spills; broken glass into the glass bin only | |
Benedict's solution Chemical | Med | Irritant, harmful if swallowed, contains copper salts; hot water bath needed | You | Goggles, no skin contact, heat in a water bath not a naked flame, wash hands after | Rinse eyes 10 min; wash skin thoroughly; tell the teacher | |
Boiling tubes Glassware | Med | Cuts from breakage; hot liquid splashing out | You and others nearby | Fill no more than one third, heat gently and evenly, use a test tube holder | Tell the teacher; treat cuts and scalds with cold running water | |
Buffer solutions (pH 3–10) Chemical | Med | Eye and skin irritation, especially at the extremes of pH | You | Goggles, gloves for pH 3 and below or pH 10 and above, keep bottles labelled and closed | Rinse the area with plenty of water for 10 min; tell the teacher | |
Electric water bath Equipment | Med | Scalds from hot water and steam; electrical risk near water | You | Keep leads dry and away from water, use a test tube holder, never carry a filled bath, max 60 °C for school work | Cool scald under cold water 10 min; switch off at mains if a lead gets wet | |
Graduated pipettes and pipette fillers Glassware | Med | Swallowing chemicals if mouth pipetting; sharp broken tips | You | Always use a pipette filler, never mouth pipette, one pipette per solution | Rinse mouth with water and tell the teacher immediately | |
Iodine in potassium iodide solution Chemical | Med | Stains and irritates skin and eyes; harmful if swallowed | You | Goggles and gloves, use a dropping pipette on a white tile, keep the bottle stoppered | Rinse eyes 10 min at the eye wash; wash skin; tell the teacher | |
Test tubes and rack Glassware | Med | Cuts from broken glass; contents spitting when heated | You and others nearby | Check for cracks, keep tubes in the rack, point the open end away from people, use a holder when heating | Tell the teacher; wash cuts under running water; sweep broken glass into the glass bin | |
Distilled water and wash bottles Chemical | Low | Slip hazard from spills; squirting into eyes | You and others nearby | Point the nozzle away from faces, wipe spills straight away | Rinse eyes with clean water; mop the floor | |
Goggles, lab coat, gloves (general lab conduct) Equipment | Low | Any splash, spill or contamination if PPE is not worn or bags block gangways | Everyone in the lab | PPE on before you start, bags and coats stored away from gangways, no eating or drinking, know where the eye wash, fire blanket and first aid kit are | Follow the teacher's instructions; use the nearest eye wash or fire blanket | |
Measuring cylinders Glassware | Low | Tipping over and cuts from broken glass | You | Stand upright away from the bench edge, fill on the bench not in the hand | Tell the teacher; clear glass into the glass bin | |
pH meter / pH probe and data logger Equipment | Low | Fragile glass electrode; electrical risk near liquids | You | Support the probe in a clamp, rinse with distilled water, keep leads off the bench edge | Tell the teacher; clear broken glass into the glass bin | |
Plastic syringes / gas syringe Equipment | Low | Squirting liquid into eyes; glass gas syringe can break | You and others nearby | Point away from faces, push the plunger slowly, support glass syringes in a clamp | Rinse eyes at the eye wash for 10 min and tell the teacher | |
Starch suspension and glucose solutions Chemical | Low | Slip hazard from spills; mild eye irritation | You and others nearby | Wipe spills straight away, keep goggles on, label all dilutions | Rinse eyes with water; mop the floor and warn others | |
Thermometer (alcohol) and stopwatch Equipment | Low | Cuts and alcohol spill if the thermometer breaks | You | Do not stir with the thermometer, clamp it rather than leaning it in a tube | Tell the teacher; do not touch broken glass with bare hands |