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 G0363 Slotted Toolboard Hook Kit 1 in
The Wall Control Slotted Toolboard Hook Kit includes 24 metal hooks for slotted pegboards or slatwall panels. It features 8 small hooks (2-3/4"), 8 medium hooks (4-1/4"), and 8 large hooks (5-3/4"). Made from steel with a black oxide finish, these hooks resist corrosion. They have a rounded top and pointed tip for easy slot insertion. This versatile kit is ideal for organizing tools and more. Manufactured in the USA by Wall Control, known for retail and storage products.
Leybold Vacuum Products Inc OERLIKON LEYBOLD VACUUM USA INC
NC3978920 CS3 STANDARD DAKKS-CALIBRATION
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.
Cayman Chemical Prostaglandin E2 QuantPAK
The PGE2 Quant-PAK has been designed for the convenient, precise quantification of PGE2 by GC- or LC-MS. It includes a 50 UG vial of PGE2-d4 and a precisely weighed vial of unlabeled PGE2, with the precise weight (5 mg) indicated on the vial. This unlabeled PGE2 can be used to quantify the PGE2-d4 standard by constructing a standard curve of peak intensity ratios (deuterated versus unlabeled).
