Duran® Class A volumetric flasks are used for the accurate measurement of specific quantities of liquids
They are volumetric analysis aids for quantitative laboratory work. Volumetric flasks are available with highest class "A" accuracy. Class "A" volumetric flasks are calibrated individually, but are available with two different types of certificates. One type is supplied with a certificate of the production lot, and the other type is supplied with individual certificates.
Ordering information: Flasks with individual certifications are tested individually. The uncertainty measurement and date of issue are recorded on the certificate. These flasks also have serialized numbers etched onto them. Flask sequential numbers are 3 letters and 4 numbers (ex. AAA-0001).