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 Set,5kg-1g ASTM Class 5
Calibration Weight Kit, Rice Lake Weighing Systems, 5kg-1g, ASTM Class 5, Stainless Steel, Satin finish, 18.11kg Kit
Rice Lake Weighing System Weight Set,1lb-0.05oz ASTM Class 5
Calibration Weight Kit, Rice Lake Weighing Systems, 1lb-.05oz, ASTM Class 5, Stainless Steel, Satin finish, 2lb .05oz Kit
Grainger Calibration Gas 116L Pentane Air
The Grainger Portable Gas Detector Calibration Kit with 116L Cylinder is designed for calibrating and bump testing portable gas detectors. It includes a 116L aluminum cylinder filled with calibration gas, a regulator with flowmeter, and tubing. The kit provides a simple way to perform routine calibration and bump tests to ensure gas detectors are operating properly. With 116L of gas, it has enough capacity to calibrate multiple detectors while providing accurate concentrations. The regulator allows easy control of flow rate. This portable kit enables compliance with calibration procedures.
Enterprise Technology Solutions Medium-Weight Marking Tags
Medium-Weight White Marking Tags 1 75 x 1 09 1 000/Box
Med Vet International NeoMed 325 (Neomycin Sulfate) Commercial Grade Soluble Powder Antibacterial 200gm
VET LICENSE NEEDS TO BE PROVIDED IN 3-4 BUSINESS DAYS OR ORDER WILL BE CANCELLED
NeoMed 325 (Neomycin Sulfate) Commercial Grade Soluble Powder Antibacterial 200gm
Rice Lake Weighing System Weight, 1lb ASTM Class 7
Calibration Weight, Rice Lake Weighing Systems, 1lb, Grip Handle, ASTM Class 7, Cast Iron Painted, Density 7.2
Rice Lake Weighing System Weight, 8oz ASTM Class 5
Calibration Weight, Rice Lake Weighing Systems, Cylindrical, 8oz, ASTM Class 5, Stainless Steel, Satin finish, Density 7.84
Rice Lake Weighing System WEIGHT KIT 200G ADJUSTED
Calibration Weight Kit, Rice Lake Weighing Systems, 200g Adjusted, ASTM Class 1, SST Polished, Density 7.84, Electronic Balance Calibration Weights
Rice Lake Weighing System WEIGHT KIT 100G ASTM CLASS 4
Calibration Weight Kit, Rice Lake Weighing Systems, 100g, ASTM Class 4, SST Satin, Density 7.84, Electronic Balance Calibration Weights
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.
Rice Lake Weighing System Weight, 50g ASTM Class 5
Calibration Weight, Rice Lake Weighing Systems, Cylindrical, 50g ASTM Class 5, Stainless Steel, Satin finish, Density 7.84
Rice Lake Weighing System MECH SCALE LB ONLY W/ HT ROD
Medical Scale, Rice Lake Weighing Systems, RL-MPS-10 Mechanical Physician Scale 450lb x 4oz (LB only) including retractable height rod and rear wheels, 10.75in x 14.75in Platform, Easy operation w/ two sliding weights
Grainger G0364 Slotted Toolboard Hook Kit 1 in
The Wall Control Toolboard Accessory Kit is a set of 29 metal hooks, bins, and holders designed to organize tools and accessories on a Wall Control pegboard. The kit includes small and large steel hooks, multi-hooks, steel bins, and holders for tape measures, levels, brooms, and other tools. The accessories are made from heavy-duty steel with powder-coated finishes and are designed to securely hold tools on the pegboard to keep the workspace organized and efficient. All accessories have pegboard mounting holes and hardware included for easy installation. This kit provides a complete assortment of accessories to outfit a pegboard wall.