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Procedure · SOP-30

Intermediate Checks of Reference Standards and Equipment

Checks between calibrations that maintain confidence in the calibration status of reference standards.

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Purpose

To define the intermediate checks performed on reference standards, working standards and critical equipment between calibrations, so that confidence in their calibration status is maintained, drift or damage is detected before it affects reported results, and the extent of any impact can be bounded.

What is inside

10 sections, about 3 pages when printed.

  1. 1. Purpose
  2. 2. Scope
  3. 3. References
  4. 4. Definitions
  5. 5. Responsibilities
  6. 6. Procedure
  7. Records generated by this procedure
  8. Monitoring and performance indicators
  9. Assessment readiness notes
  10. Related documents

Records it generates

Applying this procedure produces the following records, which are the evidence an assessor samples.

  • –Intermediate check plan per item
  • –Intermediate check records
  • –Control charts of check values
  • –Transport checks
  • –Failure investigations

What an assessor looks for

The document closes with these points, so you can check your own practice before someone else does.

  • –Asking to see the ice-point check for the PRT on the day of the sampled certificate.
  • –Checking check limits are derived from the budget and the item's tolerance, not arbitrary.
  • –Reviewing the trend chart for the calibrator's 10 V check.
  • –Confirming before-and-after transport checks for an on-site job.

Before you use it

  • Replace every square-bracket token, starting with [LABORATORY NAME], [ADDRESS] and [EFFECTIVE DATE]. The full token list is in GD-01 Read Me First.
  • Have the content technically reviewed against how your laboratory actually works, then approved by the responsible manager before it becomes a controlled document.
  • Update the Word fields after editing so the table of contents and page numbers are correct: select all, then press F9.
  • Record the document in your own document register and set its review date.
  • Delete the assessment readiness notes if you do not want them in your controlled version; they are guidance for you, not requirements.

Related documents

This is an original template published by ValiTrac. It does not reproduce the text of ISO/IEC 17025 or of any accreditation body publication, and it does not by itself confer or guarantee accreditation. Customise, review and approve it before use.