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ASTM Reference Calibration Weight Sets
Reference Calibration Weights and Mass Standards Adjusted to the Most Precise Tolerances

Weight Set ASTM 20g-5mg UC Non-Accrd TR

Calibration Certificate Traceable Certificate
ASTM Class UltraClass;Troemner UltraClass
Weight Set Range 20 g - 5 mg
Item Number: 30390101
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Overview
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.
Specifications
Calibration Certificate Traceable Certificate
ASTM Class UltraClass;  Troemner UltraClass
Weight Set Range 20 g - 5 mg
Set Capacity 40 g
Set Total Pieces 15
Protective Case Included
Construction 1 g and above are two-piece;  500 mg and below are one-piece
Density at 20°C Below 1 g are 7.95 g/cm3;  1 g and above are 8.03 g/cm3
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 Contents 10 g;  100 mg;  20 g;  10 mg;  (2) 2 g;  (2) 200 mg;  (2) 20 mg;  1 g;  5 g;  5 mg;  50 mg;  500 mg
Weight Material Below 1 g are 304 Stainless Steel;  Weights 1 g and above are Troemner Alloy 8. Weights below 1 g are 304 Stainless Steel.;  ≥1 g are Troemner Alloy 8
Wgt Origin (USA) USA