Reference mass standards E1

E1 mass standards are used as adjustment weights, test weights, verification weights and calibration weights for high-precision weighing applications. They are particularly suitable for balances with very high resolution and for demanding comparison measurements on mass comparators.

E1 mass standards are used, among other applications, in quality assurance, calibration laboratories and applications with high requirements for measuring accuracy, stability and traceability. They can also be used for the calibration and verification of E2 weights according to OIML R111.

• Testing and adjustment of high-resolution balances
• Quality assurance of balances with a very high number of scale intervals
• High-precision weighing and comparison measurements
• Calibration of E2 weights
• Metrological applications in laboratories, industry and quality assurance

Marking of E1 Mass Standards

According to OIML R111-1:2004, weights of class E1 are not marked with their nominal value or with unit information. For differentiation, weights of the same nominal value that occur more than once in weight sets can be marked with dots or stars.

In addition, up to three customer-specific user markings, such as characters, letters or numbers, can be applied. This allows the weights to be clearly identified as test or measuring equipment and better integrated into internal test equipment management.

These user markings can be specified individually when ordering.