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
Grainger Calibration Gas 116L Carbon Dioxide 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 calibration air for maintaining accuracy of gas detection equipment.
Rice Lake Weighing System Weight, 5g ASTM Class 5
Calibration Weight, Rice Lake Weighing Systems, Cylindrical, 5g, ASTM Class 5, Stainless Steel, Satin finish, Density 7.84
Grainger Calibration Gas 116L Carbon Monoxide Air
The GASCO Calibration Gas - Air is a calibration gas cylinder containing air for calibrating gas detection instruments. It has a capacity of 103L and contains 20.9% oxygen with the balance being nitrogen. The cylinder has a CGA-590 outlet connection and comes in an aluminum cylinder. The product has a 2 year recommended shelf life and is manufactured in the USA. It can be used for calibrating and bump testing gas detectors to ensure proper operation and measurement. The cylinder is DOT approved for shipment.
Sigma Aldrich Fine Chemicals Biosciences Economical neoprene dry-bo
Neoprene bonded sleeve and glove.General purpose elastomer. Resists moderate chemicals and acids ozone oils fats greases many oils and solvents. Attacked by strong oxidizing acids esters ketones chlorinated aromatic and nitro hydrocarbons.
MSC Starrett Thickness Gage Assortment, 32 Leaves, 0.001-0.030 Inch, Stainless Steel
This thickness gage assortment includes one gage each with 32 different sizes. It comes in individual envelopes, with a convenient 3/16 inch (5 mm) hole punched in the end for hanging. The stock has rounded ends with no ragged edges, making it easier to work with. It is marked every 6 inches with thickness and is made of the finest stainless steel. Inch sizes are 12 inches long, 1/2 inch wide and furnished in 32 different thicknesses ranging from 0.001-0.030 "
- Includes one gage each with 32 different sizes.
- Comes in individual envelopes.
- Features a convenient 3/16 inch (5 mm) hole for hanging.
- Rounded ends and no ragged edges for ease of use.
- Marked every 6 inches with thickness.
- Made of stainless steel.
- Leaves are 12 inches long and 1/2 inch wide.
- Furnished in 32 different thicknesses ranging from 0.001 to 0.030 "
MSC Starrett Feeler Gage, 0.002 in Thick, 12 in Long, Parallel, Stainless Steel
This feeler gage is designed for precise measurements and features a thickness of 0.002 " It is 12 inches long and made from durable stainless steel, ensuring reliability and accuracy in various applications. The parallel leaf design provides consistent and accurate gap measurement.
- 0.002 in thickness
- Parallel leaf style for consistent measurements
- 12 in length for extended reach
- 0.5 in width
- Constructed from durable stainless steel
- Made in China