11
So what is new? ISO 8655 Part
1 2
3 4 5 6
7 Subject Terminology Pipettes
Burettes Dilutors
Dispensers
Gravimetric reference measurement procedure
Alternative procedures. Changes include
Updated to include new terminology, requirements and recommendations.
Updated maximum permissible errors and a new annex for electronic pipettes.
Updated maximum permissible errors Updated maximum permissible errors Updated maximum permissible errors
Updated with better defi ned procedure and developments in measurement.
Updated and refers mainly to variations to parts 6 and 8. Now an absolute minimum of 10 repetitions for calibration and 4 for routine testing.
8 9 10
Photometric reference measurement procedure
Laboratory Syringes
User guidance, training and POVA/ tip suitability.
New. A possible alternative to the established part 6.
New section for precision syringes.
New important section to help the transfer of quality from the metrology facility to normal use in a lab.
TR 16153 TR 20461
Uncertainty of Photometric Method New. Relates mainly to the new part 8.
Uncertainty of Gravimetric Method Updated for the revised part 6 with the latest metrological factors.
“Possibly the greatest changes that this new version of ISO 8655 will generate are the better correlation between results obtained in advanced metrology facilities and those that can be expected in the routine laboratory. This will improve accuracy in
all fields of diagnostics, analysis and research. The confirmation that testing shall now involve preferably 10 and at minimum 4 replicates at each volume and for variable volume devices, testing at least 3 volumes will hopefully mean the end for potentially dangerous “2/2 calibrations” available on the market. These have always generated a false sense of security. (Calibrations must consist of 10 replicates and at least 3 volumes).”
Charles notes that he will not be working on the next updates and that BSI and ISO always welcome new experts in the work of standardisation, whether they be staff from manufacturers, metrology facilities or expert users of POVA. If you are interested in pursuing accuracy please do step forward and become an expert on BSI LBI 1/2 and help shape a better and more accurate future. GAMBICA nominates many industry professionals to BSI committees so as a fi rst step you can contact me on
jacqueline.balian@
gambica.org.uk
In the meantime, many thanks go to Charles and his colleagues on BSI committees. Read, Share and Comment on this Article, visit:
www.labmate-online.com
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