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< back�����Publications�| Publications Search | Publication: VAM Item  

Practical Laboratory Skills Training Guides: Measurement of Mass

Date: 27/01/2003 Ref No: ISBN 0 85404 463 9 Type: Guide
Author(s): Lawn R, Prichard F E
Organisation/Publisher: Royal Society of Chemistry

Measurement of mass is one of the most frequently carried out operations in an analytical laboratory. Accurate mass measurements are required for such purposes as:

  • obtaining a known quantity of a sample for analysis
  • preparation of analytical reagents
  • preparation of calibration standards

Although modern analytical balances seemingly make weighing objects to 4 or 5 decimal places (0.0001 to 0.00001 gram) a simple and routine procedure, the operation is by no means foolproof. The analyst should approach the weighing of a sample, reagent or any other artefact with the same care and critical appraisal that are (or should be) applied to the more �exciting� parts of an analytical investigation.

This document provides guidance on various important aspects of mass measurement as it is commonly carried out in analytical laboratories.

Topics covered include:

  • Difference between mass and weight
  • Types of balance used in analytical laboratories
  • Maximum capacity and readability
  • Use of the balance
  • Balance calibration
  • Checking the accuracy of a balance
  • Effect of buoyancy on weighing
  • Uncertainty of measured mass values
  • Practical exercises to evaluate competence

This guide costs �9.95 and is available to purchase from RSC Publishing. Click here for more information.

This guide has been published as part of the 'Practical Laboratory Skills Training Guides', a series of five books containing guidance on some of the basic analytical skills required by analysts today. For more information, please click here. 

On-line ordering is no longer available from the VAM website.



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