Calibration Weights
Accurate and stable reference standards for calibrating weighing equipment, including variously certified/accredited weights and weight sets from different classes. Products may be constructed of aluminum, stainless steel, brass, iron, and other alloys.
Calibration weights (also known as reference weights or test weights) are manufactured to meet high tolerances and accuracy. They are used to spot-check the performance and verify the calibration of analytical balances, precision balances, and general-purpose scales in research laboratories, educational settings, and other working environments. Some calibration weights may also be used as reference weights for the calibration of improvised or non-certified weights.
How Are Calibration Weights Made?
Calibration weights may be take the form of simple discs, cylinders, wires, or leaves. Sold separately or as sets, they may also be supplied with tweezers, gloves, and a protective case. Calibration weights are often supplied as accessories for specific balance brands and models.
Calibration weights are made from polished brass, aluminum, special stainless steels, or other metals for durability, anti-magnetization, and resistance to corrosion or wear that may affect their accuracy.
Available in nominal values from a few milligrams to 10 kg or more, they may be supplied with certificates or statements of accuracy, compliance, and traceability.
How Are Calibration Weights Classified?
Calibration weights are classified based on accuracy by organizations such as ASTM, OIML, and NIST. The appropriate classification depends on the resolution of the balance and the degree of accuracy needed to satisfy a particular weighing application.
Principal Classes of Calibration Weights:
• Class M1: For standard scales
• Class F1: For precision electronic balances
• Class E2: For highly accurate analytical balances
Uline Stainless Steel Weight With Nist Traceable Certificate - Class 5, 5 Lb
Stainless Steel Weight With Nist Traceable Certificate-Class 5 5 Lb
TARGETMOL CHEMICALS INC PROSTAGLANDIN E2 25MG
Also available in 1 mg 2 mg 5 mg 10 mg 50 mg 100 mg 500 mg 1000 mg 1 mL 10 mM (in DMSO) and bulk. Please contact Fisher for quotes. Prostaglandin E2 (PGE2) is a hormone-like compound involved in various physiological processes including smooth muscle contraction and relaxation modulation of blood vessel dilation and constriction regulation of blood pressure and inflammation modulation. purity: 99%
Rice Lake Weighing System Weight, 0.02lb ASTM Class 5
Calibration Weight, Rice Lake Weighing Systems, Cylindrical, .02lb, ASTM Class 5, Stainless Steel, Satin finish, Density 7.84
Teledyne ISCO, Inc M1 Class Single Piston Pump; Eccentric Drive; 0.00 - 10.00 Ml/Min.; 2,000 Psi
M1 Class Single Piston Pump; Eccentric Drive; 0.00 - 10.00 mL/min.; 2,000 psi; PEEK Fluid Path; Automatic Piston Wash; without Pulse Dampener; Standard Seal (Flouropolymer energizer); Fitting package for 1/8"""" and 1/16"""" tubing
Grainger G0363 Slotted Toolboard Hook Kit 1 in
The Wall Control Slotted Toolboard Hook Kit includes 24 metal hooks for slotted pegboards or slatwall panels: 8 J-hooks, 8 single prong hooks, and 8 double prong hooks. Made from zinc-plated steel with black powder coated finishes, the hooks have notched shafts for secure fitting. This kit offers an organized way to store tools, garden equipment, and more, providing versatility for various items. Made in the USA, the hooks are compatible with many major pegboard and slatwall brands.
