Calibration Weights

ISO/IEC 17025 Accredited Precision Calibration Weights
Alloy 8, high grade stainless steel calibration weights and reference standards. NVLAP, NIST Traceable calibration certificates in UltraClass Series and ANSI/ASTM Class 000, 00, 0, 1, 2, 3, and 4.
ISO/IEC 17025 Accredited Precision OIML Calibration Weights
Alloy 8, high grade stainless steel laboratory weights for precision balances. NVLAP, NIST Traceable calibration certificates in OIML class E0, E1, E2, F1, F2 and UltraClass. Individual weights and sets.
ISO/IEC 17025 Accredited Microgram Precision Weights
High grade aluminum semi-micro weights for calibrating micro balances. NVLAP, NIST Traceable calibration certificates in Troemner UltraClass with tolerance equal to ASTM 000, and OIML R 111 Class E0.
ISO/IEC 17025 Accredited Calibration Weight Cal-Paks
Alloy 8, high grade stainless steel weight sets for precision balance calibration. NVLAP, NIST Traceable calibration certificates in Troemner UltraClass and ANSI/ASTM E617 Class 1. Range: 1mg - 5kg.
ISO/IEC 17025 Accredited  Electronic Balance Weights
High quality stainless steel laboratory weights for scale and balance calibration. NVLAP, NIST Traceable calibration certificates in UltraClass, ANSI/ASTM E617 Class 1, 2, 3, 4. Range: 10g-30kg.
ISO/IEC 17025 Accredited  Heavy Capacity Weights
Stainless steel certified scale calibration weights. NVLAP, NIST Traceable calibration certificates in ANSI/ASTM E617 class 2*, 3*, 4, 5, 6, and NIST Class F*. Metric and Avoirdupois.
ISO/IEC 17025 Accredited Stainless Steel Test Weights
Stainless steel weights and weight sets for scale calibrations. NVLAP, NIST Traceable calibration certificates in NIST Class F. Available in Metric: 1mg-30kg and Avoirdupois: 1/32oz–50lb. GN, ozt.
ISO/IEC 17025 Accredited Cast Iron Weights
Cast iron certified scale calibration weights. NVLAP, NIST Traceable calibration certificates in NIST Class F, ANSI/ASTM Class 4*, 5*, 6*, 7*. Available in grip handle, slotted, and hanger designs.
ISO/IEC 17025 Accredited Stainless Steel Slotted Weights
Stainless steel slotted scale weights. NVLAP, NIST Traceable calibration certificates in NIST Class F and ASTM Class 1-7 by request. Metric and Avoirdupois. Slotted, interlocking, and flat styles.
ISO/IEC 17025 Accredited Stainless Steel Hook Weights
Stainless steel certified scale weights. NVLAP, NIST Traceable calibration certificates in NIST Class F and ASTM Class 1-7 by request. Metric and Avoirdupois. Top, bottom, and loose hook styles.
ISO/IEC 17025 Accredited Economical Stainless Steel Weights
Stainless steel certified scale weights and sets. NIST Traceable certificates in ASTM Class 7. Metric, Newton, and Grain units available in flat, cylindrical, hook, and slotted styles.
ISO/IEC 17025 Accredited Custom Weights
Tailored calibration weights made to your exact specifications. NVLAP, NIST Traceable calibration certificates in any size, any material, any tolerance, any denomination, any shape. 0.05mg–2000kg.
ISO/IEC 17025 Accredited Custom Weight Carts
Stainless steel weight carts for clean rooms, transportation, and storage. NVLAP, NIST Traceable calibration certificates in ASTM Class 4, 6. 100kg, 125kg, 250kg, custom sizes available.
Weight Cases and Accessories for Calibration Weight Care
Items for weight care, storage, and handling. Includes individual weight and set cases in wood, aluminum, and polycarbonate. Brushes, gloves, forks, forceps, lifters, and cloths.
Custom Weight Cases for Your Weights
Customized cases built around the unique needs of your weights. Includes fitted inserts for secure storage and safe transportation. Available in a variety of materials.
ISO/IEC 17025 Accredited Weight Calibration Services
Our ISO/IEC 17025 NVLAP accredited metrology lab is ready to serve your weight calibrations. We offer NVLAP and NIST Traceable calibration certificate service.