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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

ASTM Class	UltraClass
Internal Calibration Certificate	No Certificate
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	3.5 in x 7 in x 8 in (8.89 cm x 17.78 cm x 20.32 cm) (LxHxW)
Protective Case	Supplied in a high quality polycarbonate case with a compartment for each weight as well as compartments for a brush, forceps and USB flash drive.
Set Capacity	40 g
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
Set Total Pieces	15
Weight Material	Weights 1 g and above are Troemner Alloy 8. Weights below 1 g are 304 Stainless Steel.
Weight Set Range	20 g - 5 mg
Wgt Origin (USA)	USA