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Analytical Weight Sets, Ultra Class and ANSI/ASTM Classes 1 and 4, Troemner
Weight sets available in Troemner Ultra Class (equals or exceeds OIML Class E2 standards), and ANSI/ASTM Classes 1 and 4. Highly polished kilogram and gram weights made of Troemner Alloy 8, which is a specially developed austenitic stainless steel that possesses closely controlled density, extremely low magnetic permeability, good stability, and resistance to corrosion and handling damage. This exclusive material has a density of 8.0 at 25°C (controlled to ±0.1%), is essentially nonmagnetic in the annealed condition, and will not transform to magnetic under any combination of temperature and cold work down to –195.5°C (–320°F).
Fractional weights 500mg to 50mg are made of stainless steel sheet metal; fractional weights 30mg and below are made of aluminum. Weights 200g and smaller are supplied in rugged polypropylene cases. Sets that include weights 500g and larger are supplied in oak cases. All cases are fitted with individual compartments and marked with the accuracy class and serial number. A clear fitted cover secures the fractional weights within the case. Each case includes contoured weight forceps. Analytical weights 1g and above are manufactured with adjusting cavities.
Standard weight sets supplied with a Statement of Accuracy. Weights also available with either a NIST/NVLAP Weight Calibration Certificate or a Traceable Certificate. For ANSI/ASTM Class 2 and Class 3 weight sets, contact your VWR representative.
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