ASTM Class 4 flat calibration weights from OHAUS for laboratories, quality teams and scale service technicians who check and calibrate balances and scales.

Key features

• Accurate. Adjusted to meet or exceed ASTM Class 4 tolerances, with uncertainties of less than 1/4 of the tolerance.
• Stable material. High grade stainless steels, including Troemner Alloy 8, with closely controlled density, extremely low magnetic properties, good stability and resistance to corrosion.
• Clean surface. A highly polished finish that meets or exceeds ASTM surface requirements.
• Small values. Flat, one-piece milligram weights.

Choosing a weight

Individual weights from 1 mg to 500 mg, twelve values in all. Pick the value you need in the drop down above.

Certificate

Supplied with an ISO/IEC 17025 accredited (NVLAP) calibration certificate, traceable to NIST, to help meet SOP and regulatory requirements.