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
Rice Lake Weighing System Weight, 2lb ASTM Class 7
Calibration Weight, Rice Lake Weighing Systems, Slotted, Interlocking, 2lb, 5Dia x 3/4 H x 9/16 Slot Width, ASTM Class 7, Cast Iron, Painted
TA Instruments 1 Gram Class E2 Precision Weight, Weight Calibration, TGA Instruments, 1 Gram Class E2 Precision Weight
Waters TA Instruments 1 gram Class E2 Precision Weight is used for weight calibration of TGA instruments. It allows users to maintain accurate weight measurements for reliable analytical results.
TA Instruments TGA Weight Set Calibrated, Calibrated Weight Set, Discovery TGA, Balance Mechanism, Weight Calibration, TGA Weight Set Calibrated
Waters TA Instruments TGA Weight Set (Calibrated) is a calibrated weight set used for weight calibration of the Discovery TGA balance mechanism. It ensures accurate and reproducible instrument operation.
TA Instruments 100 Mg Class 1 Precision Weight, Weight Calibration, TGA Instruments, 100 Mg Class 1 Precision Weight
Waters TA Instruments 100 mg Class 1 Precision Weight is used for weight calibration of TGA instruments. It ensures the accuracy of sample mass measurements for precise thermogravimetric analysis results.
Rice Lake Weighing System Weight, 1lb ASTM Class 5
Calibration Weight, Rice Lake Weighing Systems, Cylindrical, 1lb, ASTM Class 5, Stainless Steel, Satin finish, Density 7.84
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.
BYK Gardner CUP DENSITY 100 CC TEST CER
Astm Density Cups, Iso Density Cups,; Pyncometers,weight Per Gallon, 100mL. 52x62mm
Electron Microscopy Sciences Class 10 Sticky Swabs assorted
Dust-free sticky swabs are specially used and designed for a high degree dust-free environment (class10-100). Anti-static treatment can safely dissipate electrostatic charge. Sticky swabs are applicable for manufacturing and assembling static sensitive products.
Thomas Scientific Wiper M1 Technology Class 100 Laundered Standard Weight P
Wiper M1 Technology Class 100 Laundered Standard Weight P