Laboratory Equipment & Instrumentation

Most laboratory equipment failures are not dramatic. They are a pipette drifting out of tolerance between calibrations, an autoclave cycle that reaches temperature but not sterility, a balance reading inconsistently because of an air current. These failures are silent, they contaminate results retrospectively, and they are almost entirely preventable through correct selection, routine verification and documented maintenance.

This section covers laboratory equipment from that operational standpoint: how to choose an instrument for a specific application, how to verify it is performing correctly, and how to maintain it.

How this section is organised

• Liquid handling — micropipettes, serological and volumetric pipettes, tip compatibility, and calibration intervals.
• Sterilisation and decontamination — autoclave cycle types, biological indicators and spore testing, validation and maintenance.
• Weighing and measurement — analytical versus precision balances, calibration practice, and pH meter selection and calibration.
• Centrifuges and sample preparation — centrifuge and rotor selection, the RCF versus RPM distinction, vortex mixers and water baths.
• Analytical instrumentation — spectrophotometers, and HPLC vials and consumables where seal integrity affects data quality.
• Containment and airflow — biosafety cabinets, fume hoods and laminar flow hoods, which protect different things and are routinely confused.
• Glassware and labware — vessel types by function, borosilicate versus soda-lime glass, cleaning and autoclavability.
• Cold chain and storage — ULT freezers, cryogenic storage, desiccators, and flammable storage cabinets.
• PPE and personal safety — glove, coat and eye protection selection by specific hazard.
• Equipment fundamentals — lab planning, preventive maintenance, and IQ/OQ/PQ qualification.

Specification is a research-integrity question

Equipment specification is often treated as a procurement detail, but it determines whether results are defensible. An analytical balance with insufficient readability cannot support the precision a method claims; a centrifuge protocol specified in RPM rather than RCF will not reproduce on a rotor with a different radius; a pipette outside its calibration interval invalidates every volume it dispensed since the last verification. Pages here give the specifications that matter for a given application rather than a feature list.

Related sections

For the accreditation and quality frameworks that govern calibration and maintenance records, see Laboratory Compliance & Quality. For bench protocols and day-to-day operations, see Laboratory Operations.