Calibration weights check span and linearity and calibrate electronic balances. An increasing number of laboratories are doing their own internal calibration of balances to remain compliant with industry standards, and to pass external audits. A common calibration method is Span Calibration which uses one-point calibration with a single mass that approximately equals the balance’s capacity.
OBA-216 Ultra Class Calibration Weight Sets, 1mg—100g come in a 5-2-2-1 series as indicated in ASTM E617. These weights are made of highly-polished stainless steel, and have weight tolerances 40 to 50% tighter than ASTM Class 1. Sets are also available with NIST or NVLAP certification. OBA-216 comes with a glove and foam-lined protective plastic case and glove.
- Tighter weight tolerances
- Available with or without NIST or NVLAP certification
- Meets ASTM E617
- OBA-216 Ultra Class Calibration Weight Sets, 1mg—100g, or
OBA-216T Ultra Class Calibration Weight Sets, 1mg—100g, NIST Certified, or
OBA-216W Ultra Class Calibration Weight Sets, 1mg—100g, NVLAP Certified
- Plastic storage case