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 in a protective case or vial
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Includes handling glove to prevent contamination
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High-polish surface finish for maximum mass stability
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Accredited calibration certificate included
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Designed for primary reference and analytical balance calibration
The 500 mg â 1 mg Calibration Weight, OIML Class E1 is a high-precision mass standard engineered for laboratories requiring the highest level of measurement accuracy and traceability. Manufactured in full compliance with OIML R111 international standards, this E1 class calibration weight is intended for use as a primary reference in controlled laboratory environments.
Each kit includes a single micro calibration weight packaged in a protective case or vial and supplied with a glove to ensure proper handling. The polished surface finish minimizes contamination and surface variation, helping preserve long-term stability. An accredited calibration certificate is included, making this weight suitable for regulated applications, accreditation audits, and reference calibration systems.
E1 class micro weights are commonly used for calibrating Class I and Class II analytical balances, particularly in pharmaceutical, research, and metrology laboratories where extremely tight tolerances are required.
Applications
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Calibration of Class I and Class II analytical balances
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Primary reference mass standards
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Laboratory traceability systems
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Tolerance testing and compliance verification
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Educational and research laboratory use
Specifications
| Specification |
Details |
| Nominal Range |
500 mg â 1 mg |
| Accuracy Class |
OIML E1 |
| Standard |
OIML R111 |
| Surface Finish |
Polished |
| Material Density |
7.95 g/cm3 |
| Micro Weights Material |
Aluminum for 1 mg 2 mg 5 mg |
| Micro Weights Density |
2.7 g/cm3 |
| Certificate |
Accredited calibration certificate included |
| Packaging |
Protective case or vial with handling glove |
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Maintain uncompromising accuracy with OIML Class E1 micro calibration weights from SellEton Scales. Contact our team today to request pricing, confirm availability, or speak with a calibration specialist for your laboratory requirements.
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Express Shipping: Overnight and faster shipping options available at additional costs. Quotes obtainable via email.
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Return Policy: 15-day return period for unused, original condition products. A 25% restocking fee applies. Buyer covers original and return shipping costs.
Customer Support: Contact at (844)-735-5386 or info@selletonscales.com for queries or concerns about shipping.
