OIML Class E2, F1 & F2 Calibration Weights, 50g–20kg, Certificate or Statement of Accuracy — Single Weight/Pack
The Globe Scientific Calibration Weights deliver traceable mass standards for verifying and adjusting analytical, precision, and industrial balances across the laboratory and production floor. Choose OIML Class E2, F1, or F2 to match your balance readability and routine calibration tolerances. Each weight ships individually, with documentation tailored to your QA workflow.
Technical Specifications
| Product Type | Calibration Weight (mass standard) |
|---|---|
| Volume/Size | 50g, 100g, 200g, 500g, 1kg, 2kg, 5kg, 10kg, 20kg (varies by variant) |
| Material | Stainless steel |
| Closure/Cap | Not applicable — solid weight |
| Graduation | OIML accuracy classes E2, F1, F2 |
| Sterility | Non-sterile |
| Pack Size | 1 weight per pack (sold individually) |
Available Options
| Option | SKU | Price (per weight) |
|---|---|---|
| E2, 50g, Statement of Accuracy | GB-E2-50G | $143.30 |
| E2, 50g, ISO 17025:2017 Cert. | GB-E2-50G-C | $194.30 |
| E2, 100g, Statement of Accuracy | GB-E2-100G | $179.40 |
| E2, 100g, ISO 17025:2017 Cert. | GB-E2-100G-C | $230.40 |
| E2, 200g, Statement of Accuracy | GB-E2-200G | $278.90 |
| E2, 200g, ISO 17025:2017 Cert. | GB-E2-200G-C | $348.60 |
| F1, 100g, Statement of Accuracy | GB-F1-100G | $133.30 |
| F1, 100g, ISO 17025:2017 Cert. | GB-F1-100G-C | $188.00 |
| F1, 200g, Statement of Accuracy | GB-F1-200G | $176.90 |
| F1, 200g, ISO 17025:2017 Cert. | GB-F1-200G-C | $296.30 |
| F1, 500g, Statement of Accuracy | GB-F1-500G | $237.80 |
| F1, 500g, ISO 17025:2017 Cert. | GB-F1-500G-C | $375.90 |
| F1, 1kg, Statement of Accuracy | GB-F1-1KG | $418.30 |
| F1, 1kg, ISO 17025:2017 Cert. | GB-F1-1KG-C | $570.10 |
| F1, 2kg, Statement of Accuracy | GB-F1-2KG | $588.70 |
| F1, 2kg, ISO 17025:2017 Cert. | GB-F1-2KG-C | $749.20 |
| F1, 5kg, Statement of Accuracy | GB-F1-5KG | $1040.30 |
| F1, 5kg, ISO 17025:2017 Cert. | GB-F1-5KG-C | $1194.70 |
| F2, 500g, Statement of Accuracy | GB-F2-500G | $164.40 |
| F2, 500g, ISO 17025:2017 Cert. | GB-F2-500G-C | $231.60 |
| F2, 1kg, Statement of Accuracy | GB-F2-1KG | $263.90 |
| F2, 1kg, ISO 17025:2017 Cert. | GB-F2-1KG-C | $400.80 |
| F2, 2kg, Statement of Accuracy | GB-F2-2KG | $402.10 |
| F2, 2kg, ISO 17025:2017 Cert. | GB-F2-2KG-C | $515.20 |
| F2, 5kg, Statement of Accuracy | GB-F2-5KG | $628.50 |
| F2, 5kg, ISO 17025:2017 Cert. | GB-F2-5KG-C | $799.00 |
| F2, 10kg, Statement of Accuracy | GB-F2-10KG | $1443.60 |
| F2, 10kg, ISO 17025:2017 Cert. | GB-F2-10KG-C | $1611.50 |
| F2, 20kg, Statement of Accuracy | GB-F2-20KG | $2450.10 |
| F2, 20kg, ISO 17025:2017 Cert. | GB-F2-20KG-C | $2699.10 |
Applications
- Routine verification of analytical and precision laboratory balances
- As-found / as-left checks during scheduled instrument calibration cycles
- Eccentricity, repeatability, and linearity testing of weighing systems
- Quality-control mass checks in pharmaceutical and food testing labs
- Industrial and shipping scale verification with 10kg and 20kg weights
- Reference standards supporting metrology and QA audit documentation
Quality & Procurement
Ordered through labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each weight is supplied with a Statement of Accuracy or an ISO 17025:2017 Certificate of Calibration, and units carry lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited labs. Institutional and grant-funded tiered pricing is available on request.
Frequently Asked Questions
What is the difference between OIML Class E2, F1, and F2?
The classes define maximum permissible error, tightest first. E2 weights suit high-resolution analytical balances, F1 covers precision balances, and F2 fits general laboratory and production weighing where wider tolerances are acceptable.
Should I choose the Statement of Accuracy or the ISO 17025:2017 certificate version?
A Statement of Accuracy confirms the weight meets its class tolerance. The "-C" SKUs add an ISO 17025:2017 Certificate of Calibration with measured values and traceability, which audited and accredited labs typically require.
What material are these weights made from?
All variants are machined from stainless steel for corrosion resistance, low magnetic susceptibility, and long-term mass stability under routine handling.
How often should calibration weights be recalibrated?
Recalibration intervals depend on usage and your quality program, but most labs recertify reference weights annually. Periodic recertification keeps documented traceability intact for compliance.