Calibration Accessories

Calibration accessories are the supporting tools and reference standards that enable accurate calibration and verification of measuring instruments. This category includes calibration weights, weight sets, and ancillary accessories used alongside balances, scales, and mass measurement instruments. Proper calibration accessories ensure that instruments perform to their rated specifications and comply with regulatory standards such as ISO 8655, OIML R 111, and ASTM E617.

Calibration weights are available in a range of accuracy classes — from OIML Class E1 ultra-precision weights for reference laboratories to Class M weights for routine industrial use. Materials include stainless steel (AISI 304 and 316) for corrosion resistance, and sets typically cover ranges from milligram increments to multi-kilogram standards. These accessories are essential in pharmaceutical quality control, food and beverage production, chemical analysis, and regulatory compliance programs.

Typical Applications

Verification and adjustment of analytical balances and precision scales in pharmaceutical manufacturing and QC laboratories
ISO/IEC 17025 accredited calibration services requiring traceable mass standards
OIML or ASTM class-compliant calibration programs in industrial and trade weighing applications
Food processing and packaging line weight verification for legal-for-trade compliance
Mass calibration support in metrology institutes and accredited calibration laboratories

Popular Brands

Ohaus offers a broad range of calibration weight sets for laboratory and industrial use, covering OIML and ASTM classes. Procision provides precision stainless steel calibration weights with full traceability documentation. Other respected manufacturers in this space include Mettler Toledo, Kern & Sohn, and Rice Lake Weighing Systems.