Key Highlights
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Manufactured to International Recommendation OIML R111 specifications
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OIML Class E1 accuracy for ultra-high precision calibration
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Supplied as a single calibration weight kit with protective case
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Includes glove for safe handling and contamination prevention
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Accredited calibration certificate included
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High-polish finish for optimal mass stability and surface integrity
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Designed for primary reference and analytical balance calibration
The 20 kg - 1 g Calibration Weight, OIML Class E1 is a precision-engineered mass standard designed for the most demanding calibration environments. Manufactured in full compliance with OIML R111 international standards, this E1 class calibration weight is intended for laboratories and institutions requiring the highest level of measurement accuracy and traceability.
This kit includes a single 20 kg calibration weight supplied in a protective case along with a glove to ensure proper handling. The polished surface finish minimizes contamination and surface wear, helping maintain long-term stability and repeatable results. An accredited calibration certificate is included, making this weight suitable for regulated environments, accreditation audits, and primary mass reference applications.
E1 class weights are commonly used for calibrating Class I analytical balances, serving as reference standards within calibration laboratories, national metrology institutes, and high-precision industrial settings.
Applications
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Calibration of Class I analytical balances
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Primary reference standard verification
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Laboratory mass traceability systems
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Accreditation and compliance testing
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Precision tolerance verification
Technical Specifications
| Specification |
Details |
| Nominal Value |
20 kg |
| Accuracy Class |
OIML E1 |
| Standard |
OIML R111 |
| Surface Finish |
Polished |
| Material Density |
7.95 g/cm3 |
| Adjustment |
With adjustment cavity |
| Certificate |
Accredited calibration certificate included |
| Packaging |
Protective case with handling glove |
Maintain the highest level of calibration accuracy with certified OIML Class E1 calibration weights from SellEton Scales. Contact our team today to request pricing, confirm availability, or speak with a calibration specialist for your laboratory requirements.
Free shipping: To the 48 contiguous states (residential, farm and rural deliveries may carry a carrier surcharge).
Ship date: Rice Lake Weighing Systems products ship on the maker's own lead time; we confirm the date when you order, or call 844-735-5386 before you buy.
Tracking: Emailed the moment your order ships.
Questions: (844) 735-5386 or info@selletonscales.com.
