200 mg ASTM Class 1 Calibration Weight with Traceable CertificateFeaturesCan be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical...
3 mg ASTM Class 1 Calibration Weight without CertificateFeaturesCan be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances...
30 mg ASTM Class 1 Calibration Weight without CertificateFeaturesCan be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances...