BATCH CERTIFICATES All volumetric glassware material (measuring cylinders, flasks, pipettes and burettes) made on
the same production date do have the same batch number. During the quality control process
each piece is verified individually, dismissing those not fulfilling the maximum tolerances permitted. The batch certificate mention the average value obtained for all the pieces of the same
batch, the standard deviation and the control date. This batch certificate can be downloaded free of charge at ‘Download certificates‘ sectionINDIVIDUAL CALIBRATION CERTIFICATE Glassware with an individual certificate do have an individual serial number added to the batch
number. They are delivered with a certificate showing the real volume of this particular flask.
INSTRUMENTS AND CHEMICALS
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