A laboratory’s results are only as defensible as the instruments behind them - and the instruments are only as defensible as their records. Every analyser, centrifuge, pipette, and freezer in a medical lab carries dated obligations: calibration, servicing, verification, electrical safety. When those records live in a shared spreadsheet, a vendor portal, and three binders, the lab works fine right up until an assessor, an out-of-tolerance result, or a dead freezer asks a question the paperwork cannot answer. This guide covers how labs keep an equipment register that holds up: what goes on it, how calibration records should accumulate, and how to verify the register against the bench.
What you will learn
- Two pressures, one register
- What belongs in the register
- Calibration and service records assessors trust
- Physical counts and spare parts
- A pragmatic rollout
- FAQ
Two pressures, one register
Lab equipment records serve two masters, and the same register satisfies both:
- Accreditation. Frameworks such as ISO 15189 and ISO/IEC 17025 expect equipment that affects results to be identified, maintained, calibrated, and documented - with the history available, not promised. Assessors rarely find a missing inventory; they find an inventory that disagrees with the bench: instruments moved, retired, or added without the record following.
- Downtime. A failed analyser stops a workload; a failed freezer threatens samples. The labs that recover fastest are the ones where the instrument’s record already holds the serial, the service contact, the warranty status, and the repair history - so the first hour goes into fixing, not finding.
Both pressures point at the same discipline: one record per instrument, every event logged on it, the register verified against reality on a rhythm.
What belongs in the register
Everything whose failure or drift would affect a result, a sample, or a person:
| Instrument class | Record focus | Typical events on the record |
|---|---|---|
| Analysers | Service contract, vendor engineer history | Services, repairs, software updates |
| Centrifuges, incubators, water baths | Servicing and checks | Services, faults, temperature checks noted |
| Pipettes and balances | Calibration status | Calibrations, adjustments, out-of-tolerance events |
| Freezers and fridges | Criticality, alarm arrangements | Services, breakdowns, door seal replacements |
| Biosafety cabinets, fume hoods | Certification | Periodic testing, filter changes |
| Bench and office IT | Assignment | LIMS terminals, label printers, scanners |
| Safety provision | Inspection dates | Eyewash stations, spill kits, other safety equipment |
Two boundary calls. Pipettes go on the register individually (or per set in high-volume labs) - they are calibration-dated and mobile, the worst possible combination for informal tracking. Reagents and consumables do not: they belong in stock and lot management, not the asset register.
Calibration and service records assessors trust
The difference between records that pass and records that wobble is where they accumulate. A certificate filed in a binder is evidence; a certificate attached to the instrument’s own record, alongside every previous one, is evidence with a spine.
- Dates live on the instrument. Calibration interval, last done, next due. The lab runs from one filterable due-soon list instead of a spreadsheet someone owns.
- Overdue means out of service. An instrument past its calibration date gets flagged and physically tagged, and its status changes in the register - using it quietly is how out-of-tolerance results metastasise.
- Every equipment servicing visit is logged on arrival, with the report attached before the engineer leaves the building.
- The history is tamper-evident. A register with a proper audit trail - who changed what, when - turns “we maintain our equipment” from an assertion into a demonstrable timeline.
Tip: when an instrument fails calibration, log the out-of-tolerance event on its record immediately, including what was checked and what was affected. Six months later, that note is the difference between a contained incident and an unanswerable assessor question.
Physical counts and spare parts
Registers rot quietly: an analyser is replaced, a centrifuge moves rooms, a pipette retires to a drawer. The antidote is a rolling physical inventory count - one bench or room per month, checking that each instrument exists, sits where the record says, and carries a readable label. A rolling count takes minutes; the heroic annual version takes a weekend and gets postponed.
Spares deserve a corner of the register too. The rotor, the lamp, the seals kit that keep a critical instrument running are worth tracking with minimum levels - lightweight spare parts management so the part is on the shelf when the instrument goes down, not on back-order.
A pragmatic rollout
- Inventory the critical path first - the analysers and freezers whose failure stops work - then sweep the benches. A structured walkthrough like this asset inventory checklist keeps the sweep honest.
- Label for gloved hands. QR labels on flat, cleanable surfaces, away from heat and solvents; the test is whether a tech can scan it without moving the instrument.
- Migrate the dates. Calibration and service dates from spreadsheets and binders onto the records, certificates attached.
- Name a responsible person per instrument - accreditation expects it, and it gives every due date an owner.
- Start the rolling count. One room this month. The register stays true from then on.
AMPthilly is built for exactly this register: one record per instrument with serial, supplier, warranty, documents, and custom fields; printable QR labels that open the record in any phone browser - scan to report a fault with a photo, and the ticket stays on the instrument permanently; service dates and certificates kept on each record; and a full audit history of every change, exportable as CSV for assessment evidence. The free plan covers 3 users and 25 assets with no card, enough to pilot your critical instruments; see features for the rest.
FAQ
What is the best way to track laboratory equipment? One register, one record per instrument with QR label, responsible person, and full calibration and service history, verified against the bench on a rolling schedule.
How do you track calibration for lab equipment? Intervals and due dates on each instrument’s record, certificates attached, one filterable due-soon list, and overdue instruments flagged out of service.
Should pipettes be in the asset register? Yes - calibration-dated and highly mobile. Individually, or per set in high-volume labs.
What do accreditation assessors expect from an equipment inventory? A complete current list with identification, location, responsible person, calibration status, and maintenance history per item - and records that match the bench.
How often should a lab physically verify its equipment inventory? Rolling verification, one bench or room per month, and always ahead of an accreditation cycle.
The takeaway
A lab’s equipment register is part of its evidence chain. Give every instrument one record, let calibrations, services, and faults accumulate on it the day they happen, flag overdue items out of service, and verify a room a month. Do that, and assessment prep becomes printing a history instead of reconstructing one - and the next instrument failure starts with a scan, not a search.