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
Genscript Corporation CytoSinct M1 magnet
The CytoSinct Manual Separator system is developed to separate human and animal cells The material to be separated for example cells is first magnetically labeled with superparamagnetic CytoSinct Nanobeads After magnetic labeling cells are passed through a CytoSinct Columns which is placed in the strong permanent magnet of the CytoSinct Manual Separator The ferromagnetic spheres in the column amplify the magnetic field by 10 000-fold thus inducing a high Magnetic field gradient Unlabeled cells pass through while magnetically labeled cell are retained within the column After removal of the column from the magnetic field the retained fraction can be eluted Both fractions labeled and non-labeled can be collected for downstream applications including cell culture and flow cytometry
Perkin Elmer US LLC Calibration Weight - Qty. 1
We offer a complete portfolio of consumables, accessories and supplies that deliver optimal performance in measuring the coefficient of thermal expansion (CTE), Tg, and TM in materials. Choose from a range of consumables and accessories with a cost efficient range of probes including expansion, compression, flexure, extension, and volumetric (dilatometry).
Leica Biosystems Leaf spring - replacement for Leica microtome (compatible with RM2145)
Leaf Spring (MPN 14050229557) is a replacement service part from Leica Biosystems used in microtome cutting assemblies to restore correct tension and maintain sectioning performance during repairs and routine maintenance.
- Restores correct tension in the cutting assembly.
- Helps maintain consistent sectioning performance.
- Intended for service and repair use.
- Designed for straightforward replacement following service instructions.
Rice Lake Weighing System WEIGHT KIT 500G ADJUSTED
Calibration Weight Kit, Rice Lake Weighing Systems, 500g Adjusted, ASTM Class 1, SST Polished, Density 7.84, Electronic Balance Calibration Weights
Rice Lake Weighing System WEIGHT KIT 1KG ASTM CLASS 4
Calibration Weight Kit, Rice Lake Weighing Systems, 1kg, ASTM Class 4, SST Satin, Density 7.84, Electronic Balance Calibration Weights
