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
Cayman Chemical ProstaglndIn E2 methyl STR
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MSC 80/20 Inc. 45 deg T-Slotted Extrusion Support Bracket, Aluminum, Clear Anodized
This 45-degree T-Slotted Extrusion Support Bracket is constructed from aluminum and features a clear anodized finish. With an overall length of 6 inches (160 mm), it is designed for use with 2525 series extrusions and utilizes standard T-nuts for secure fastening.
- Designed for 45-degree T-Slotted extrusions
- Constructed from aluminum
- Clear anodized finish
- Overall length of 6 inches (160 mm)
- Compatible with 2525 series
- Utilizes standard T-nuts
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.
Grainger Lockwire Spool 0.0201 Dia 207.75ft
The Malin Company Lockwire is a 0.032 inch diameter stainless steel lockwire used to prevent loosening of threaded fasteners. It comes in a 225 foot roll and features a tensile strength of 300,000 psi. The lockwire creates a lock effect when installed in a crisscross pattern to secure bolts, nuts, turnbuckles and other threaded assemblies. It conforms to MIL-W-83420 and MS20995 standards. The lockwire is made in the USA.
Grainger Calibration Gas 116L Carbon Monoxide Air
The GASCO Calibration Gas - Air is a calibration gas cylinder containing air for calibrating gas detection instruments. This 34 liter aluminum cylinder contains 99.9995% pure air balanced with nitrogen and is certified to NIST traceable standards. The cylinder has a CGA-590 outlet with a brass valve and is refillable. This calibration gas is suitable for calibrating and bump testing gas detectors used for monitoring oxygen levels. With a 2 year shelf life, this cylinder from GASCO provides high purity air from a reliable gas supplier. The 16N084 model contains air at approximately 2000 psi fill pressure.