Balance & Calibration Weights

Balance and calibration weights play a crucial role in ensuring the precision of measuring equipment. These weights help maintain accuracy in quantitative analysis and are used across a multitude of scientific and industrial settings.

Hooked weights and weight and hanger systems are particularly useful for calibrating scales that require a secure attachment method, enhancing stability during calibration. NIST traceable weights are highly sought for their guaranteed accuracy and traceability to national standards, providing confidence in measurements and compliance with regulatory requirements.

These tools, more than just instruments, are the backbone of any setting that relies on precise weight measurements. They offer not just reliability and consistency but also a sense of indispensability.

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  • Mettler Toledo

    METTLER TOLEDO's world leading expertise in metrology extends to weights, weight sets and weight calibration services. The weight portfolio covers OIML weights from fifty micrograms to five tons in all accuracy classes. Our weights are used all over the world, not only for testing balances but also…

  • Class E2 Can be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg.

  • To get all the accuracy your electronic balance and/or scale provides, you need to perform routine calibrations and verifications using precision calibration weights. Troemner's Stainless Steel Electronic Balance Calibration Weights are intended for this purpose. Weights are available in a…

  • Class 1 Can be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg. Statement of Accuracy Every Troemner Weight and Weight Set, with the exception of Economical…

  • Made of premium quality brass Ideal for use with slotted weights Great tool for physics experiments Precisely machined for accuracy. Excellent tool for physics experiments. Single mass hanger. Ideal as spare or extra part to full slotted weight sets.

  • Class 4 For calibration of semi-analytical balances and for student use. Traceable Certificate The Traceable Certificate is designed for those laboratories and companies that require traceability but do not need to meet any stringent regulatory requirements. The Traceable Weight…

  • Adam Equipment

    ASTM weight sets include a complete group of test weights that can meet requirements for testing to ASTM standards. Class 1 and 2 weight sets provide a high level of accuracy and are ideal for calibrating analytical and precision balances. Class 4 weight sets offer a lower level of accuracy, but…

  • Troemner

    Calibration Consistency: We address every variable of our measurement process to assure consistency of calibration results which lead to accurate results in your processes, products, and services. Alloy 8 Advantage: Troemner Alloy 8 Stainless Steel is the finest grade of stainless steel…

  • Weights are available with NVLAP* or Traceable Certificates To test commercial and non-commercial scales NIST Class F tolerances Designed for servicemen Class F weights are designed to check scales used in commercial and industrial applications where an accuracy of 0.1% or…

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    GSC International, Inc.

    There are nine hooked weights in this set. The weights are as follows: one 1000g cast-iron hooked weight, one 500g cast-iron hooked weight, two 200g brass hooked weights, one 100g brass hooked weight, one 50g brass hooked weight, two 20g brass hooked weights, and one 10g brass hooked weight. Comes…

  • UltraClass The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as…

  • UltraClass The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as…

  • Category: Alloy 8 Metric Precision Calibration Weight Size: 1, 2, 5, 10, and 15 mg Class: Class 1   (See ANSI/ASTM Metric Tolerance Chart) Tolerance: 0.010 mg Certification: NVLAP Certificate   (View Sample) Material: Flat aluminum Construction: 1 piece construction…

  • labForce® (powered by Thomas Scientific)

    Thomas Scientific Calibration Weights are solid construction and made with non-magnetic stainless steel. OIML E2 can be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg.…

  • UltraClass The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low…

  • GSC International, Inc.

    This slotted weight set includes the following: Ten 10g plastic slotted weights One 10g hanger PRODUCT WARNINGS WARNING: This product can expose you to chemicals including styrene, which are known to the State of California to cause cancer, birth defects, or other…

  • Precisely machined for accuracy Made of high quality brass Spare or extra part for Slotted Masses Sets Great tool for physics experiments Precisely machined for accuracy. Excellent tool for physics experiments. Single slotted weight. Ideal as spare or extra part to full…

  • Class 1 Can be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg. Cylindrical with handling knob Supplied in high quality polycarbonate case with red insert …

  • Class 1 Can be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg. Statement of Accuracy Every Troemner Weight and Weight Set, with the exception of Economical…

  • Troemner

    The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.01 mg.

  • Class F1 Appropriate for calibrating high-precision top loading balances with a readability as low as 0.01 g to 0.001 g

  • To get all the accuracy your electronic balance and/or scale provides, you need to perform routine calibrations and verifications using precision calibration weights. Troemner's Stainless Steel Electronic Balance Calibration Weights are intended for this purpose. Weights are available in a…

  • Individual Hooked Weights - Brass Great spare or replacement piece Premium polished brass Durable for long term classroom use  

  • The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.01 mg.

  • The OHAUS 100 grams calibration weight is suitable for use with mechanical and electrical balances as well as scales. It is ideal for use in laboratories, educational purposes and industrial purposes.

  • Weight set made from stainless steel Weights are slotted to fit and lock on to the hanger Hanging mass is perfect for balance testing and weight determination Good classroom tool for demonstrations on force and balance This Masses is perfect for labs and demos on force and balance,…

  • Mettler Toledo

    Performs routine testing of balances securely with only what you need - two test weights ASTM and OIML Weights available Saves time and money Includes tweezers, gloves and other accessories for professional weight handling Test balances with up to 4900 g weight capacity CarePac® offers a…

  • Troemner

    UltraClass The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low…

  • UltraClass The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as…

  • Class 1 Can be used as a reference standard in calibrating other weights and is appropriate for calibrating high-precision analytical balances with a readability as low as 0.1 mg to 0.01 mg. Statement of Accuracy Every Troemner Weight and Weight Set, with the exception of Economical…

  • Single hooked weight weighing 100g (0.22lbs) Cylindrical with cone shaped top Features hook for easy lifting and hanging. Bottom slot allows for other hooked weights to be attached in tandem Measures 1" in diameter, and is 2.5" in height Made of powder coated steel Single hooked weight. 100…

  • UltraClass The weight tolerance is equal to ANSI/ASTM E617 Class 0 and exceeds OIML R 111 Class E2. This class is used as a reference standard for calibrating other reference standards and weights and is appropriate for calibrating high-precision analytical balances with a readability as low as…

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