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Ohaus Stainless Steel Precision Calibration Weight, ASTM Class 1, Metric

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Product Specifications
UNSPSC Code
41111505
Brand Name
Ohaus

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Currently showing 1-20 of 20
100g, ASTM Class 1 1 80781141 B0051WG4PW 2 $92.00 Buy Options
100g, ASTM Class 1, with NVLAP Certificate 1 80781142 B0051WGC1S 2 $142.00 Buy Options
10g, ASTM Class 1 1 80781133 B0051WHOHE 1 $66.00 Buy Options
10g, ASTM Class 1, with NVLAP Certificate 1 80781134 B0051WGIE4 1 $124.00 Buy Options
10kg, ASTM Class 1, with NVLAP Certificate 1 80781004 B0051WE7HE 1 $883.92 Buy Options
1g, ASTM Class 1 1 80781125 B0051WHNTS 1 $66.00 Buy Options
1g, ASTM Class 1, with NVLAP Certificate 1 80781126 B0051WGQ6E 1 $114.00 Buy Options
200g, ASTM Class 1, with NVLAP Certificate 1 80781144 B0051WFSDG 1 $241.00 Buy Options
20g, ASTM Class 1 1 80781135 B0051WHOLK 1 $66.00 Buy Options
20g, ASTM Class 1, with NVLAP Certificate 1 80781136 B0051WGG50 2 $125.00 Buy Options
20kg, ASTM Class 1, with NVLAP Certificate 1 80781006 B0051WDLRQ 1 $1,330.65 Buy Options
2g, ASTM Class 1 1 80781127 B0051WHNVG 1 $66.00 Buy Options
2g, ASTM Class 1, with NVLAP Certificate 1 80781128 B0051WGQRI 1 $114.00 Buy Options
30kg, ASTM Class 1 1 80781007 B0051WD8EM Usually ships in 2 to 4 weeks $1,578.11 Buy Options
30kg, ASTM Class 1, with NVLAP Certificate 1 80781008 B0051WCUBE Usually ships in 2 to 4 weeks $1,988.98 Buy Options
50g, ASTM Class 1 1 80781139 B0051WH8KW 1 $76.00 Buy Options
50g, ASTM Class 1, with NVLAP Certificate 1 80781140 B0051WGFEM 1 $128.00 Buy Options
5g, ASTM Class 1 1 80781131 B0051WHO0Q 1 $66.00 Buy Options
5g, ASTM Class 1, with NVLAP Certificate 1 80781132 B0051WGN1W 2 $115.00 Buy Options
5kg, ASTM Class 1, with NVLAP Certificate 1 80781002 B0051WEM60 Usually ships in 2 to 4 weeks $716.93 Buy Options

Key Features

  • Metric, ASTM Class 1 calibration weight for calibrating other weights, or electronic balances and scales
  • Stainless steel construction for stability, resistance to corrosion, and low magnetic susceptibility
  • Tapered neck for lifting weights with tweezers, reducing contamination
  • Meets American Society for Testing and Materials (ASTM) E617, Class 1 specification for use as a reference standard for calibrating other weights and high-precision balances with readabilities as low as 0.1mg to 0.01mg
  • Optional NVLAP certificate ensures precision and traceability

Product Description

The Ohaus metric, stainless steel precision calibration weight meets American Society for Testing and Materials (ASTM) Class 1 specifications, and is designed for calibrating other weights, or electronic balances and scales. The weight is constructed of stainless steel for stability, resistance to corrosion, and low magnetic susceptibility. A tapered neck enables the weight to be lifted with tweezers, reducing the risk of contaminants adhering to the weight. The weight meets ASTM E617, Class 1 specification for use as a reference standard for calibrating other weights and high-precision balances with readabilities as low as 0.1mg to 0.01mg. An optional National Voluntary Laboratory Accreditation Program (NVLAP) certificate ensures precision and traceability.

The National Voluntary Laboratory Accreditation Program (NVLAP) accredits laboratories for compliance with ISO/IEC 17025 on the basis of their ability to meet the technical requirements set forth in NIST Handbook 150-2, and can provide accreditation to ANSI/NCSL Z540-1-1994. NVLAP calibrations and certifications meet all ISO, FDA, GMP, GLP, DOD, ANSI/NCSL Z540-1 and Nuclear requirements and are traceable to NIST. Procedures and processes used to generate this multi-page certificate, as well as its format and content, are prescribed by NVLAP. The document contains customer name & address, date of calibration, equipment and standards used in the calibration, accuracy class, true mass value (mass in a vacuum), “As Found” mass correction (for recalibration), “As Left” mass correction, uncertainty of measurement process (uncertainty to tolerance ratios are guaranteed), environmental conditions during test, construction and density of the weight, calibration procedure, and a statement of traceability to NIST. Mutual recognition arrangements include The International Laboratory Accreditation Cooperation (ILAC), The Asia Pacific Laboratory Accreditation Cooperation (APLAC) and The National Cooperation for Laboratory Accreditation (NACLA).

Calibration weights are used to measure the weight or mass of an object using a balance or scale, or to calibrate other weights or instruments. Calibration weights can be certified or uncertified. Certified weights meet strict guidelines for accuracy and can usually be recertified. Certified weights are used in labs where a high degree of accuracy and repeatability is required. Uncertified weights are used where a lower degree of accuracy is required, including student laboratories, rough weighting operations, and measuring force. Hooked and slotted weights are often used to measure pressure, torque, and tensile strength, and to demonstrate basic laws of physics. Calibration weights differ from lab weights, which are general purpose weights used to hold an object in place, similar to a paperweight.

Science education products incorporate applied math and science principles into classroom projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.

Ohaus manufactures scales and balances for laboratory, educational, retail, food, and jewelry applications. The company, founded in 1914, is headquartered in Parsippany, NJ.

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