Welcome. What weight class do you need?

ANSI/ASTM Class 1

Provides the greatest precision. Can be used as reference standard in calibrating other weights and appropriate for calibrating high-precision analytical balances (from 0.01mg to 0.1mg).

ANSI/ASTM Class 2

Appropriate for calibrating high-precision toploading balances with readabilities ranging from 0.001g to 0.01g.

ANSI/ASTM Class 3

Appropriate for calibrating balances with moderate precision, ranging from 0.01g to 0.1g.

ANSI/ASTM Class 4

Appropriate for student use and semi-analytical weighing.

NIST Class F

Used to test commercial weighing devices by state and local weights and measures officials, device installers and service technicians. Class F weights may be used to test most accuracy class III scales, all scales of class III L or IIII, and scales not marked with a class designation.

We can assist you in selecting the weights your facility needs to meet both your usage and regulatory requirements. We can even create custom weight sets if needed.