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Form · FRM-41

Mass and Balance Calibration Worksheet

Raw data for weights and weighing instruments: repeatability, eccentricity, linearity.

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Purpose

The technical record for mass and weighing instrument calibration under SOP-26: for weights, the comparator, reference weights, ABBA readings, air density and buoyancy correction and conventional mass; for instruments, the repeatability, errors of indication, eccentricity and the weights used at each load, with uncertainty and checks.

What it covers

  • Reference standards and equipment
  • Environment and air density
  • Part A - Weights
  • Part B - Weighing instrument
  • Uncertainty and decision rule
  • Deviations, observations and nonconforming work
  • Checks
  • Authorisation

How to complete it

  1. 1.Complete Part A for weights or Part B for weighing instruments (or both).
  2. 2.Record ambient temperature, pressure and humidity at start and end and the computed air density.
  3. 3.Part A: record every reading of every ABBA cycle; compute differences per cycle, mean and standard deviation; record densities used.
  4. 4.Part B: record the instrument warm-up and exercising, zero and load readings for each test, and the identity and class of each weight used.

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.

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.