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Calibration Weights
Scale Solutions offers an extensive selection of Calibration Weights from premier manufacturers such as Mettler Toledo Xpress, Rice Lake, Troemner.
What weight class do you need?
- ANSI/ASTM Class 1 Provides the greatest precision. Can be used as reference standard in calibrating other weights and appropriate for calibrating high-precision analytical balances (from 0.01mg to 0.1mg).
- ANSI/ASTM Class 2 Appropriate for calibrating high-precision toploading balances with readabilities ranging from 0.001g to 0.01g.
- ANSI/ASTM Class 3 Appropriate for calibrating balances with moderate precision, ranging from 0.01g to 0.1g.
- ANSI/ASTM Class 4 Appropriate for student use and semi-analytical weighing.
- NIST Class F Used to test commercial weighing devices by state and local weights and measures officials, device installers and service technicians. Class F weights may be used to test most accuracy class III scales, all scales of class III L or IIII, and scales not marked with a class designation.
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GENERAL GUIDELINES FOR SELECTING ACCURACY CLASSES* |
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Typical Use |
Recommended Weight Class |
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Primary Laboratory Reference Standard - High precision standard used primarily as a reference for calibrating other weights. |
OIML Class E1 |
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ASTM Class 0 |
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Precision Analytical Balances - Used to calibrate special precision analytical balances with a readability as low as 0.1 mg to 0.01 mg, Classes I and II.
Can be used as a reference standard in calibrating other weights. |
OIML Class E2 |
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ASTM Class 1 |
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High Accuracy Balances - Working standard for precision analytical work,
built-in weights and external weights used to calibrate precision balances with a readability as low as 0.01g to 0.001g. |
OIML Class F1, F2 |
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ASTM Class 2 |
| Top Loading Balances - Appropriate for calibrating balances with moderate precision, with a readability as low as 0.1g to 0.01g. |
ASTM Class 3 |
| Industrial and Commercial Scales & Balances - For use with retail, wholesale and commercial scales; industrial scales; dial scales; even pan balances; platform scales; postal scales. Also used for Class IIIL and IV Weighing Devices and for calibrating scales in Legal-For-Trade applications. Brass or cast iron commonly used materials in weights, although also available in stainless steel. |
OIML Class M1, M2, M3 |
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ASTM Class 4, 5, 6 |
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NIST Class F |
http://www.nist.gov | Scales and Scale Related Products | |
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Scale Solutions, LLC
Willow Spring, NC 27592
1-877-623-2507
webmaster@scalesolutionsllc.com
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