Starting on the Right Foot

Your first weeks in a UK bioscience laboratory are a blend of excitement and information overload, and safety is the one subject you cannot afford to skim. Under the Health and Safety at Work etc. Act 1974, your employer must provide a safe working environment, suitable training and clear written procedures. You, in turn, have a duty to take reasonable care of yourself and others, to follow those procedures and to report anything that looks unsafe. Treat your laboratory induction as the foundation of your career rather than a box-ticking exercise. The habits you build in your first month — how you handle a pipette, where you put your gloves, whether you speak up about a wobbly clamp — will stay with you for decades.

Risk Assessments and COSHH: Read Before You Start

Before you open a reagent bottle or switch on a centrifuge, find the relevant risk assessment and standard operating procedure (SOP). In the UK, chemical hazards are covered by the Control of Substances Hazardous to Health Regulations 2002, usually shortened to COSHH. A good COSHH assessment tells you the hazards of a substance, who might be harmed, the controls in place and what to do if something goes wrong. Biological agents are assessed separately, typically with reference to the Advisory Committee on Dangerous Pathogens guidance.

Make a habit of checking the following before every new task:

• The current version of the risk assessment and SOP — check the review date and whether it has been superseded.
• The safety data sheet for any new chemical, paying attention to exposure routes and first aid advice.
• Whether the work needs to be done in a fume hood or microbiological safety cabinet rather than on the open bench.
• Who your supervisor is for that procedure, and whether you have been signed off as competent to perform it unsupervised.

If a document is missing, out of date or simply confusing, say so. Nobody expects a new starter to memorise every control measure on day one, but everyone expects you to ask.

Personal Protective Equipment: Small Details, Big Difference

PPE is your last line of defence, not your first, but it only works when it is worn properly. A few practical points that experienced staff notice immediately:

• Lab coats should be fastened, with sleeves covering your forearms. Remove them before leaving the laboratory — never wear them to the canteen, the office or the toilet.
• Gloves must match the hazard. Nitrile is fine for many aqueous solutions, but not for every solvent. Remove gloves before touching door handles, keyboards, phones or lift buttons.
• Eye protection is required whenever there is a splash, aerosol or UV risk. Safety spectacles are not the same as goggles, and neither substitutes for a face shield during high-volume work.
• Respiratory protection, where needed, requires fit testing and clean shaven skin at the seal. A mask that has not been fit tested offers far less protection than you think.

Tie long hair back, avoid dangling jewellery and wear closed-toe shoes. It sounds fussy until the day a flask of hot agar slips.

Biological Safety and Containment

UK laboratories work at containment levels one to four, depending on the organisms involved. Most routine diagnostics, teaching and research take place at containment level two, where a microbiological safety cabinet is often the key control. Used correctly, a Class II cabinet protects both you and your sample. Used carelessly, it protects very little.

• Switch the cabinet on and let airflow stabilise before starting — usually a few minutes, as stated in your SOP.
• Work at least 10 centimetres inside the front opening, and keep movements slow and deliberate. Rapid arm movements break the air curtain.
• Never block the front or rear grilles with paperwork, racks or discarded wrappers.
• Decontaminate surfaces before and after work with a validated disinfectant, and allow the correct contact time.
• Autoclave waste according to local rules, and record the cycle. Indicator strips and spore tests exist for a reason.

Housekeeping, Waste and Emergencies

A tidy bench is a safe bench. Keep aisles clear, store bags and coats outside the laboratory, and never eat, drink or apply cosmetics in the working area. Mouth pipetting is banned in every UK laboratory, without exception.

Waste segregation matters. Sharps go straight into a designated sharps container, which is sealed when three-quarters full. Clinical and infectious waste is separated at source into the correct colour-coded stream, and chemical waste never goes down the sink unless your assessment explicitly permits it.

Know your emergency actions before you need them: where the spill kit, eyewash, safety shower and fire exits are, and how to raise an alarm. For a biological spill, the usual sequence is to alert those nearby, allow aerosols to settle, contain the spill from the edges inwards, disinfect with appropriate contact time, and report the incident. Every accident, near miss and sharps injury should be recorded, however minor it seems. Reporting is not a sign of weakness; it is how the whole team stays safer.

Training, Competence and Asking Questions

Competence is built through supervised practice, not assumption. Expect to be observed and signed off for key techniques, and expect that sign-off to be reviewed as your work changes. If you are asked to perform a procedure you have not been trained for, it is entirely reasonable to pause and ask for support.

Finally, look after yourself as well as your samples. Fatigue, rushing before a deadline and working alone after hours all increase the chance of error. A good laboratory culture rewards the person who spots a loose connection, queries an unclear label or reports a spill promptly. That instinct — curious, careful and willing to speak up — is what makes a genuinely reliable bioscientist.