CalPak ASTM 5g-1mg UC Accrd TR - 30391798 Troemner UltraClass offers high accuracy with tight tolerances and uncertainties of less than 1/4 of the tolerance. Weight surfaces meet or exceed ASTM and have a highly polished finish. Available in high grade stainless steels including Troemner Alloy 8 which possesses closely controlled density, extremely low magnetic properties, good stability, and resistance to corrosion. Available with certificate options traceable to NIST including ISO/IEC 17025 Accredited Certificate or Traceable Certificate to aid in meeting SOP and regulatory requirements. Family Tag Line: Reference Calibration Weight Sets and Mass Standards Adjusted to Troemner UltraClass Tolerances Family Name: ASTM Reference Calibration Weight Sets Applications: Use as a primary reference for calibrating other mass standards and use for traceability between national mass standards and ASTM Class 1 weights and lower. This class is appropriate for calibrating high-precision balances with readability as low as 0.01 mg. Construction: 1 g and above - two-piece 500 mg and below - one-piece Design Features: Weights 50 kg through 1 g are cylindrical with handling knob. Weights 500 mg and below are flat with one end turned up for easy handling. Family Overview: ASTM Reference Calibration Weight Sets Model No.: CalPak ASTM 5g-1mg UC Accrd TR Calibration Certificate: ISO/IEC 17025 Accredited Certificate ASTM Class: Troemner UltraClass Weight Value: Weight Set Range: 5 g - 1 mg Design: Weight Material: 500 mg to 5 mg are 304 Stainless Steel;?1 g are Troemner Alloy 8;?2 mg are Aluminum Protective Case: Included Construction: 1 g and above are two-piece; 500 mg and below are one-piece Density at 20°C: 2 mg and below are 2.70 g/cm3;500 mg to 5 mg are 7.95 g/cm3;1 g and above are 8.03 g/cm3 Dimensions: Dimensions in Case: 3.5 in x 7 in x 8 in (8.89 cm x 17.78 cm x 20.32 cm) (LxHxW) Set Capacity: 5.5 g Set Contents: 5 g;500 mg;1 mg Set Total Pieces: 3 Standard Measurment Uncertainty: Uncertainty: Weight Tolerance: Wgt Origin (USA): USA