What does a laboratory check before buying an instrument?
They check the performance specification against the method, whether you support installation and operational qualification, and the consumable and service costs. In regulated laboratories an instrument that cannot be qualified cannot be used, whatever it measures.
A laboratory manager is buying an instrument that must be qualified, maintained and defended in an audit for a decade.
Reviewed 4 August 2026
Scope and specifications
- Instrument type and technique
- The category the laboratory is shopping in.
- Performance specification
- Range, accuracy, precision and detection limit.
- Methods and standards supported
- Whether it runs the laboratory's existing methods.
- Qualification support
- Installation and operational qualification for regulated laboratories.
- Consumables and their cost
- Frequently exceeds the instrument cost over its life.
- Data system and compliance features
- Audit trail and record integrity in regulated work.
- Footprint and services required
- Bench space, power, gases and extraction.
Documents buyers may need
| Document | What it proves | Where it belongs |
|---|---|---|
| Technical specification sheetAsked at: selection | Performance parameters with the conditions they are measured at | Publish it |
| Qualification documentationAsked at: regulated laboratories — often decisive | Installation and operational qualification protocols | Publish it |
| Calibration certificateAsked at: installation and periodically | Calibration traceable to recognised standards | Per shipment |
| Method compliance statementAsked at: method transfer | Which standard methods the instrument supports | Publish it |
| Declaration of ConformityAsked at: before installation | Conformity with electrical safety and applicable directives | Publish it |
| Service coverage and response timeAsked at: purchase decision | Engineer coverage, response and preventive maintenance scope | Publish it |
| Consumable and spare parts price listAsked at: total cost evaluation | Running cost over the instrument's life | Publish it |
Details for a useful enquiry
- Application and methods to be run
- Determines the instrument.
- Performance requirement
- Detection limit and precision needed.
- Regulatory environment
- Decides the qualification and data requirements.
- Sample throughput
- Drives configuration and automation.
- Existing instruments and data systems
- Integration matters more than expected.
- Budget cycle and installation timing
- Laboratory purchasing is calendar-driven.
Questions suppliers ask
Why publish consumable prices?
Because sophisticated buyers calculate cost per sample, and those are the buyers worth having. Publishing consumable costs signals confidence, and it wins against competitors whose instrument is cheaper and whose consumables are not. Buyers discover it eventually either way.
What does qualification support actually need to include?
Protocols and documentation for installation and operational qualification, and clarity about whether your engineer performs them. Regulated laboratories cannot use an unqualified instrument, so this is a gate rather than a preference, and vagueness reads as absence.
How much application data belongs on the site?
Application notes for the methods your customers actually run are among the most valuable pages you can publish. Laboratory buyers search for their method rather than for an instrument category, and a note that shows the instrument running that method is what gets found.
Check which documents and standards your buyer needs; requirements vary by market, customer and contract.
Plact Research. Plact's editorial desk for buyer-evidence research. Industry standards, documents and buyer questions are researched and drafted with Plact's AI tools, then reviewed by Praveen Kavuri before publication. Every claim cites the standard, regulation or public source it rests on.
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