Product Description
Build a traceable mass standard chain with OIML individual weights matched to the tolerance your balance or lab procedure demands. Classes E1 and E2 serve as reference standards for high-precision analytical and microbalances, while F1 and F2 weights handle routine verification of precision balances and lower-class standards. Each weight is sold individually, so you can replace a single piece or build a custom set without buying a full kit.
This listing is for OHAUS item number 30390882: OIML Class F2 Calibration Weight, 1 kg, Two-Piece, with Accredited Calibration Certificate. Gram-range weights feature a tapered neck for easy handling, a polished mirror-like finish that shows scratches or debris, and a recessed base that reduces wear; milligram weights are flat with one end turned up for handling with tweezers. Materials follow the OIML R111 approach of dense, corrosion-resistant alloys: Alloy 8 stainless steel or 316 stainless steel for gram and kilogram values, and 303 or 304 stainless steel or aluminum for milligram values. E-class weights are supplied with an ISO/IEC 17025 accredited calibration certificate, and F-class weights are available either with an accredited certificate or with no certificate. Every weight ships in a protective case. LIGHT LABS supplies the OHAUS line with knowledgeable support from our Englewood, Colorado team.
Key Features
- OIML R111 Classes – Available in Classes E1, E2, F1 and F2 to match the tolerance required by your balance and procedure
- Accredited Certification Option – Many weights include an ISO/IEC 17025 accredited calibration certificate for traceability and audit support
- Handling-Friendly Design – Gram and kilogram weights have a tapered neck, and milligram weights have an upturned end for tweezer handling
- Wear-Resistant Finish – A polished, mirror-like surface shows scratches or foreign matter, and a recessed base reduces wear
- Corrosion-Resistant Materials – Alloy 8 or 316 stainless steel for larger values and 304 stainless steel or aluminum for milligram values
- Protective Case – Each weight ships in a case that protects it during storage and transport
Specifications
| Item Number | 30390882 |
| Brand | OHAUS |
| Description | OIML Class F2 Calibration Weight, 1 kg, Two-Piece, with Accredited Calibration Certificate |
| Calibration Certificate | ISO/IEC 17025 Accredited Certificate |
| OIML Class | F2 |
| Weight Value | 1 kg |
| Design | Cylindrical |
| Protective Case | Included |
| Uncertainty | 0.5 mg |
| Construction | Two-piece |
| Density at 20°C | 8.03 g/cm3 |
| Dimensions | 3.27 in x 1.89 in (8.303 cm x 4.801 cm) (HxØ) |
| Dimensions in Case | 4.5 in x 3.5 in (11.43 cm x 8.89 cm) (HxØ) |
| Weight Material | Alloy 8 |
| Weight Tolerance | 16 mg |
| Wgt Origin (USA) | USA |
| Standard | OIML R111 |
Related Models
- 30390941 – OIML Class E1 Calibration Weight, 1 g, One-Piece, with Accredited Calibration Certificate
- 80780293 – OIML Class E2 Calibration Weight, 1 g, One-Piece, with Accredited Calibration Certificate
- 80780316 – OIML Class F1 Calibration Weight, 1 g, Two-Piece, No Certificate
- 80780340 – OIML Class F1 Calibration Weight, 1 g, Two-Piece, with Accredited Calibration Certificate
- 30390867 – OIML Class F2 Calibration Weight, 1 g, Two-Piece, No Certificate
- 30390891 – OIML Class F2 Calibration Weight, 1 g, Two-Piece, with Accredited Calibration Certificate
- 30390932 – OIML Class E1 Calibration Weight, 1 kg, One-Piece, with Accredited Calibration Certificate
- 80780302 – OIML Class E2 Calibration Weight, 1 kg, One-Piece, with Accredited Calibration Certificate
- 80780325 – OIML Class F1 Calibration Weight, 1 kg, Two-Piece, No Certificate
- 80780349 – OIML Class F1 Calibration Weight, 1 kg, Two-Piece, with Accredited Calibration Certificate
- 30390858 – OIML Class F2 Calibration Weight, 1 kg, Two-Piece, No Certificate
- 30390950 – OIML Class E1 Calibration Weight, 1 mg, One-Piece, with Accredited Calibration Certificate
- 80780284 – OIML Class E2 Calibration Weight, 1 mg, One-Piece, with Accredited Calibration Certificate
- 80780307 – OIML Class F1 Calibration Weight, 1 mg, One-Piece, No Certificate
Applications
- Analytical and microbalance calibration
- Routine balance verification in QC labs
- Calibration of lower-class mass standards
- Linearity and repeatability testing
- ISO 9001 and GLP/GMP compliance programs
- Scale service and metrology labs
