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Troemner™ Individual Analytical Precision Weights, UltraClass with NVLAP Certificate

Highly polished kilogram and gram weights

Manufacturer: fisher scientific  70120W

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Catalog No. 02-225-535

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Description & Specifications


Product Type Two-piece metric analytical weight
Certifications/Compliance NVLAP, ISO9001
Material Alloy 8 Stainless Steel
Weight (Metric) 2kg
Density 8.03g/cm3 at 20°C
Mass 2kg
Shape Cylindrical with handling knob
Includes Polycarbonate case
Quantity Each

Made of Troemner Alloy 8, a specially developed austenitic stainless steel that possesses closely controlled density, extremely low magnetic permeability, good stability, and resistance to corrosion and handling damage.

  • 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 (30mg weights are aluminum); fractional weights 3mg and below are aluminum
  • The UltraClass weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2
  • This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.01mg
  • Weights are supplied with a NIST/NVLAP Weight Calibration Certificate
  • Weights supplied in a rugged, precision-fit, high quality polycarbonate case