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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	Two-piece
Density at 20°C	Below 2 kg are 8.03 g/cm3; 2 kg and above are 7.95 g/cm3
Dimensions	6.6 in x 12.7 in x 16.2 in (16.764 cm x 32.258 cm x 41.148 cm) (LxHxW)
Protective Case	Supplied in protective case. Includes a compartment for a polycarbonate case which holds weights 500 g and below. 1 kg and 2 kg weights are held in individual polycarbonate cases inside a cutout.
Set Capacity	4 kg
Set Contents	10 g; (2) 20 g; 100 g; (2) 2 g; (2) 200 g; 1 g; 50 g; 5 g; 1 kg; 2 kg; 500 g
Set Total Pieces	14
Weight Material	Weights 2 kg and above are 316 Stainless Steel. Weights below 2 kg are Troemner Alloy 8.
Weight Set Range	2 kg - 1 g
Wgt Origin (USA)	USA