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, 50lb ASTM Class 6
Calibration Weight, Rice Lake Weighing Systems, 50lb, Grip Handle, ASTM Class 6, Cast Iron, Painted
Rice Lake Weighing System Weight, 25lb ASTM Class 6
Calibration Weight, Rice Lake Weighing Systems, 25lb, Grip Handle, ASTM Class 6, Cast Iron, Painted
Rice Lake Weighing System WEIGHT SCREW KNOB 5G ASTM
Calibration Weight, Rice Lake Weighing Systems, Screw Knob, 5g, ASTM, Class 1, SST, Polished Density 7.95
Abcam Arecaidine but-2-ynyl ester tosylate, mAChR M2 agonist, 10MG
MW 179.22 Da, Purity >99%. mAChR M2 agonist. Active *in vivo*. Achieve your results faster with highly validated, pure and trusted compounds.
The product is subject to the following: Abcam Restricted Use Statement
Cayman Chemical Prostaglandin E2, Purity: ≥98%, CAS: 363-24-6, 10 mg
PGE2 is one of the primary COX products of arachidonic acid and one of the most widely investigated PGs. Its activity influences inflammation, fertility and parturition, gastric mucosal integrity, and immune modulation.{1585,1558,437,1330} The effects of PGE2 are transduced by at least four distinct receptors designated EP1, EP2, EP3, and EP4.{1422} Affinity constants (Kd) of PGE2 for these receptors range from 1-10 nM depending on the receptor subtype and tissue.
Enterprise Technology Solutions Medium-Weight White Marking Ta
Medium-Weight White Marking Tags 2.75 x 1.69 1000/Box
Abcam Pirenzepine dihydrochloride, M1 antagonist, 500MG
MW 424.3 Da, Purity >98%. Selective M1 receptor antagonist. Achieve your results faster with highly validated, pure and trusted compounds.
The product is subject to the following: Abcam Restricted Use Statement
MSC Starrett Feeler Gage, 0.01 in Thick, 0.5 in Wide, 12 in Long, Stainless Steel
This feeler gage provides precise measurements for various applications. It is designed with a thickness of 0.01 inches, a width of 0.5 inches, and a length of 12 inches. Constructed from durable 301 stainless steel, it offers reliable performance for checking gaps and clearances.
- Features a parallel leaf style
- Constructed from 301 stainless steel for durability
- Provides accurate thickness measurements
- Ideal for checking clearances and gaps
MSC Starrett Feeler Gage, Stainless Steel, 0.030 in Thick, 12 in Length
These gages are widely used in automotive, aviation, diesel, and farm equipment manufacture and service, as well as in jig, fixture, gage, and experimental work. This specific product is 0.030 in thick and 12 in length.
- Comes in an individual envelope.
- Features a convenient 3/16 in (5 mm) hole punched in the end for hanging.
- Rounded ends ensure easier handling.
- Marked every 6 in (150 mm) with thickness for easy identification.
- Made of high-quality stainless steel.
MSC Brawny Professional Disposable Cleaning Towels, Heavy Duty, 300 Sheets/Box
These heavy-duty, hydroentangled disposable cleaning towels are designed for industrial and automotive applications, providing effective solutions for absorbing spills, grease, and oils, as well as for general-purpose cleaning tasks.
- Heavy-duty wipe type
- Flat sheet form
- Dry wipe style
- Box packaging
- Hydroentangled construction
- Sheet length of 15.2 in
- Sheet width of 13 in
- Suitable for industrial and automotive environments
- White color
- Unscented
- One-ply construction
- Ideal for absorbing spills, grease and oils, spray and wipe tasks, applying solvents, and machine part wiping
- Packaged with 300 sheets per box
Sigma Aldrich Fine Chemicals Biosciences DNA Molecular Weight Marke
We are committed to bringing you Greener Alternative Products which adhere to one or more of The 12 Principles of Greener Chemistry. This product is designed as a safer chemical.A The DIG System was established as a sensitive and cost-effective alternative to radioactivity for the labeling and detection of nucleic acids. There are many available publications that prove the versatility of the DIG System so use of radio-labeling is no longer the only option for labeling of DNA for hybridization.
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.
Perkin Elmer US LLC Calibrating Weight - Class 1.1, 100 mg
This weight ships with the Provectus 6500 Installation Kit, as well as the PYRIS 1 TGA Standard and High Temperature Furnace kits. With this part number, labs can order this weight as a replacement or spare.
MSC Brawny Professional H700 Towels, Heavy Duty, White, 18 Boxes
The H700 Disposable Cleaning Towels are heavy-duty, hydroentangled flat sheet wipes designed for robust cleaning tasks in industrial and automotive environments. They are ideal for absorbing spills, grease, and oils, as well as for spray and wipe applications and machine part wiping.
- Heavy duty construction for demanding cleaning tasks
- Hydroentangled flat sheets ensure durability
- Designed for industrial and automotive environments
- White, unscented, and alcohol-free material
- Sheet dimensions: 13.26 in length, 10 in width
- Roll length: 880 ft
- Compatible with 54560, 54565, and 54566 long-distance roll dispensers
- Suitable for absorbing spills, grease, and oils, applying solvents, and general purpose cleaning
- Single ply for efficient cleaning
- Made in the United States