Laboratory Maintenance Checklist for Nigerian Labs

Run these at the start of every working day and before locking up. They take 10–15 minutes and catch the issues that cause the most incidents in Nigerian labs — power surges, leaking taps, blocked fume hoods.

• Inspect benches, sinks and floors for spills, broken glass or chemical residue.
• Confirm fume cupboard sash moves freely and the airflow indicator reads within the safe range.
• Check eye-wash stations and safety showers — run water for 30 seconds to clear the line.
• Verify gas taps, water taps and Bunsen connections are fully closed at shutdown.
• Test emergency stop buttons on centrifuges, autoclaves and hotplates.
• Confirm UPS / inverter battery indicators are green; log any PHCN outage events.
• Check fridge and freezer temperatures for reagents, samples and vaccines; record in the log.
• Empty chemical and biohazard waste bins into the designated holding area.

Schedule these for a fixed day each week (Friday afternoon works well). Assign a named technician — accountability is what keeps weekly checks from slipping.

• Wipe down all bench surfaces, fume hood interiors and reagent shelves with the correct disinfectant.
• Inspect fume cupboard filters and pre-filters for dust loading; clean or flag for replacement.
• Check pH meters, balances and pipettes against a known standard; recalibrate if drift is detected.
• Test fire extinguishers — pressure gauge in the green, pin and tamper seal intact, no corrosion.
• Inspect first-aid kit; restock plasters, burn gel, saline and gloves.
• Run autoclave performance check with a biological or chemical indicator strip.
• Inspect electrical cables, sockets and extension boards for heat damage or loose connections.
• Review chemical inventory — flag expired reagents and segregate for disposal.

These are the deeper preventive tasks that protect your big-ticket equipment and keep you audit-ready for NESREA, NAFDAC, MLSCN and university safety officers.

• Full fume cupboard face-velocity test (target 0.4–0.6 m/s at the sash opening); record results.
• Service centrifuges — inspect rotor, gaskets and lid interlocks; lubricate per manufacturer schedule.
• Test deionised / distilled water system; check resistivity and replace cartridges if exhausted.
• Inspect autoclave door gasket, pressure relief valve and chamber drain.
• Calibrate analytical balances with certified weights; log calibration certificate reference.
• Service microscopes — clean objectives, check illumination, align condenser.
• Inspect gas cylinder storage — chains in place, valves capped, cylinders within hydrostatic test date.
• Update the chemical inventory and Safety Data Sheet (SDS) folder; remove obsolete entries.
• Review and sign off the maintenance log; escalate any deferred items to lab management.

Fume cupboard safety checks

Fume cupboards are the single most safety-critical asset in a chemistry or medical lab. In Nigeria's climate — high humidity, dust and unstable power — they need closer attention than many manufacturers' default schedules suggest.

• Sash glass clean and undamaged; counterweight cable in good condition.
• Airflow alarm audible and visible; test the alarm monthly.
• No items stored inside the hood that would obstruct airflow.
• Baffles unobstructed and set to the correct position for the work being done.
• Ductwork inspected annually by a qualified technician for corrosion and blockages.
• Annual third-party face-velocity certification on file.

Equipment calibration intervals

Use these intervals as a default. Adjust based on usage intensity, manufacturer guidance, and any regulator-specific requirement (MLSCN for medical labs, NAFDAC for pharma QC, university safety committees for teaching labs).