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
Cayman Chemical 8Iso ProstaglndIn E2 Isopro
8-iso PGE2 isopropyl ester is a more lipophilic form of the free acid, 8-iso PGE2. Prostaglandin esters have enhanced lipid solubility compared to their parent compounds. They are generally hydrolyzed to the free acid upon in vivo administration, making the esters useful prodrugs. In general, the C-1 esters of prostaglandins show greatly diminished agonist activity in vitro compared to the parent free acids.
Grainger Calibration Gas 116L Pentane Air
The GASCO Calibration Gas - Air is a calibration gas cylinder containing zero air. It has a capacity of 103L and is made of aluminum. This cylinder of zero air can be used for calibration and bump testing of gas detectors and monitoring systems. The cylinder has a CGA 590 outlet connection and comes equipped with a brass 3-way valve. The gas mixture is 21% oxygen and 79% nitrogen. This calibration gas cylinder allows for accurate sensor testing and calibration. The cylinder is refillable and meets ISO standards. It is suitable for calibrating and bump testing a variety of gas detection equipment.
Rice Lake Weighing System Weight Set,100g-1mg ASTM Class 1
Calibration Weight Kit, Rice Lake Weighing Systems, 100g-1mg ASTM Class 1, Stainless Steel, Polished finish (5-2-2-1 configuration)
Med Vet International Vitamin B-12, 500Mcg, 100 Tablets
Vitamin B-12, 500Mcg, 100 Tablets Vitamin B12 is an essential vitamin. This means that the body requires vitamin B12 to work properly. Vitamin B12 can be found in foods such as meat, fish, and dairy products. It can also be made in a laboratory. It is often taken in combination with other B vitamins. Products are not always manufacturer specific. Actual product appearance may differ from website image.