Product Overview
Rice Lake 50g ASTM Class 3 Calibration Weight - Stainless Steel, Satin Finish, with Calibration Data Sheet
Condition
Unused NOS. Photos show the specific unit you will receive - cylindrical stainless steel body with brushed satin finish, stamped 50 g on the top face, no visible wear or surface defects. Calibration data sheet included, dated 4/20/2, showing nominal mass 50g, Class 3, property 737908. Sourced from a government research facility.
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Product Overview
Rice Lake part number 13186 is a 50-gram ASTM Class 3 calibration weight, cylindrical form, stainless steel construction with a satin finish. Designed to meet ASTM E617-18 specifications, it provides a known, traceable mass standard for verifying and adjusting the accuracy of weighing instruments. Comes with the original calibration data sheet.
Key Features
- Nominal mass: 50 grams
- Class: ASTM Class 3
- Material: Stainless steel, satin finish
- Form: Cylindrical body, approximately 1-inch diameter and approximately 1-inch tall per photo measurements
- Stamped markings: 50 g on top face, confirmed in photos
- Compliance: Designed to meet ASTM E617-18 specifications
- Includes calibration data sheet (Rice Lake, Class 3, nominal mass 50g)
- Manufactured by Rice Lake Weighing Systems, Rice Lake, Wisconsin, USA
Applications
- Routine calibration checks on Class I and II analytical balances - placing the 50g standard on the pan, reading the display, and making adjustments to keep measurement records compliant before a production run or experiment begins
- Tolerance testing and verification of ASTM Class 4, 5, and 6 weights as part of a metrology program, confirming that working weights used on the floor still fall within specification
- Quality control weighing audits in food processing, pharmaceutical, or manufacturing environments where a traceable reference weight is required at a documented calibration interval
- Student laboratory instruction in metrology, chemistry, or physics courses - providing a hands-on, standardized object that introduces traceable mass standards and measurement uncertainty in a way a generic object cannot
Frequently Asked Questions
What is included with this weight?
The 50g cylindrical weight and the original calibration data sheet are included, as visible in the photos. No additional accessories.
Is this weight suitable for calibrating analytical balances?
Class 3 weights are suitable for calibrating Class I and II balances and for verifying ASTM Class 4, 5, and 6 weights. If your application requires a higher accuracy class (Class 0, 1, or 2), verify that Class 3 meets your specification before ordering.
Does the calibration data sheet provide NIST traceability?
The included calibration data sheet is from Rice Lake and shows Class 3 designation and nominal mass. Whether it provides full NIST-traceable accredited certification meeting ISO/IEC 17025 is not confirmed from the sheet visible in photos. Buyers requiring an accredited certificate should verify this before purchase.
What is ASTM E617-18?
ASTM E617-18 is the standard that defines specifications and tolerances for laboratory weights and precision mass standards. Class 3 within this standard sets specific tolerance bands for a 50g weight, distinguishing it from higher-precision classes (0, 1, 2) and lower-precision classes (4 through 7).
A stainless cylinder with a stamped 50 and a data sheet that says what it is - that is the whole story, and for balance calibration that is exactly enough. Someone out there has a scale that needs this weight to know what it weighs.
