Rice Lake Test Weights and Calibration Services

Rice Lake Weighing Systems ASTM Cast Iron Test Weights
Designed for scale calibration, our solid cast iron test weights are sealed to ASTM classes 6 and 7 specifications; Class F tolerances are listed in the National Institute of Standards and Technology Handbook 105-1. All weights are traceable to NIST. To verify adherence to class F tolerances, optional traceable certificates are available. Our cast iron test weights undergo a special phosphatizing process in which the metal is thoroughly cleaned and mildly etched to allow exceptional finish adhesion. The test weights are then coated with a layer of chip-resistant paint which conforms to NIST Handbook 105-1 standards. This two-step process ensures a long-lasting finish that greatly reduces the possibility of corrosion.