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, 0.02lb ASTM Class 5
Calibration Weight, Rice Lake Weighing Systems, Cylindrical, .02lb, ASTM Class 5, Stainless Steel, Satin finish, Density 7.84
Hach Company Weight Set, Class M-2
Standard weight set. 16-piece, with stainless steel forceps. Eight fractional weights: 10, 20, 50, 100, 200, 200, 200, and 500 mg. (Two fractional weights, 200 mg and 500mg, are stainless steel, the rest are aluminum) Eight brass gram weighs: 1, 2, 2, 5, 10, 10, 20, and 50 grams. Polypropylene case.
BYK Gardner CUP DENSITY 100 CC TEST CER
Astm Density Cups, Iso Density Cups,; Pyncometers,weight Per Gallon, 100mL. 52x62mm
Rice Lake Weighing System WEIGHT 20MG LEAF ASTM CLASS1
Calibration Weight, Rice Lake Weighing Systems, Leaf, 20mg, ASTM, Class 1 SST Polished Density 7.95
Rice Lake Weighing System MECH SCALE LB & KG W/ HT ROD
Medical Scale, Rice Lake Weighing Systems, RL-MPS Mechanical Physician Scale 440lb(200kg) x 4oz (100g) including retractable height rod and rear wheels, 10.75in x 14.75in Platform, Easy operation w/ two sliding weights
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.
TA Instruments 1 Gram Class E2 Precision Weight, Weight Calibration, TGA Instruments, 1 Gram Class E2 Precision Weight
Waters TA Instruments 1 gram Class E2 Precision Weight is used for weight calibration of TGA instruments. It allows users to maintain accurate weight measurements for reliable analytical results.
TA Instruments TGA Weight Set Calibrated, Calibrated Weight Set, Discovery TGA, Balance Mechanism, Weight Calibration, TGA Weight Set Calibrated
Waters TA Instruments TGA Weight Set (Calibrated) is a calibrated weight set used for weight calibration of the Discovery TGA balance mechanism. It ensures accurate and reproducible instrument operation.
Electron Microscopy Sciences Green-Lite™ Light with Rectangular LED 7"x5 ¼", 2x, Weighted Base
Equipped with next generation, surface mount LEDs, these innovative illuminated magnifiers will quickly pays for themseves through energy savings.
Made in the USA they feature the highest lumen output in a lighted magnifier and reduced glare, heat, and energy consumption. User controlled LED groups shine desired level of light exactly where required, and superb dimming software via convenient, reliable membrane switch.
Features precision ground, optical grade glass and largest lens in the industry. Low voltage (15-24 v) power suplies are auto-switchable with worldwide approvals. Energy Star compliant (each unit uses 8 watts maximum). Auto shut off at 4 hour intervals to prevent energy waste while users are away. High quality die cast aluminum shades and all steel arm components for ESD safety. Virtually "maintenance zero".
Type: Weighted Base