Different ASTM Class are available, depending on the accuracy of the balance to be calibrated.
ASTM Class 0 and Class 1 weights are recommended for Analytical Balances with 0.001mg to 0.1mg resolution.
ASTM Class 2 weights are recommended for Precision Balances with 1mg resolution.
ASTM Class 3 weights are recommended for Precision Balances with 0.01g resolution.
ASTM Class 4 weights are recommended for Laboratory Balances with 0.1g resolution.
NIST Class F weights are recommended for production balances used in an industrial environment.
- Flat milligram weights (leaf weights) 1mg – 500mg
- Highly polished or satin finish cylindrical weights
- Grip handle weights (stainless steel or cast iron)
- Slotted and hook weights
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