Product Description
Reliable weighing results depend on reliable reference masses, and these OHAUS ASTM sets give you the full sequence you need in a single case. Options range from small milligram sets for micro and analytical balances to gram and kilogram sets, in ASTM Class 1 for high-precision work or Class 4 for routine verification.
This listing is for OHAUS item number 30390052: ASTM Class 4 Calibration Weight Set, (2) 2 kg to 1 g, with Accredited Calibration Certificate,. Weights are made in the USA and adjusted to ASTM E617 tolerances. Gram and kilogram pieces are machined from dense, corrosion-resistant stainless alloys, and most use two-piece construction with a sealed adjustment cavity, while milligram pieces are one-piece. Every set ships in a fitted protective case (the largest 25 kg and 50 kg pieces, where included, ship separately), and sets are offered with no certificate, a traceable non-accredited certificate or an ISO/IEC 17025 accredited certificate. LIGHT LABS supplies the OHAUS line with knowledgeable support from our Englewood, Colorado team.
Key Features
- Class 1 or Class 4 – Match the weight tolerance to your balance readability and procedures
- Milligram Sets Available – Small sets down to 1 mg for analytical and semi-micro balances
- Accredited Certification Option – ISO/IEC 17025 accredited certificates for audit-ready documentation
- Made in the USA – Corrosion-resistant metal construction for long-term mass stability
- Protective Case – Fitted storage keeps weights clean and organized
Specifications
| Item Number | 30390052 |
| Brand | OHAUS |
| Description | ASTM Class 4 Calibration Weight Set, (2) 2 kg to 1 g, with Accredited Calibration Certificate, |
| Weight Set Range | (2) 2 kg to 1 g |
| ASTM Class | 4 |
| Calibration Certificate | ISO/IEC 17025 Accredited Certificate |
| Set Capacity | 6 kg |
| Set Total Pieces | 15 |
| Protective Case | Included |
Related Models
- 30391329 – ASTM Class 1 Calibration Weight Set, 500 mg to 10 mg, No Certificate,
- 30391539 – ASTM Class 1 Calibration Weight Set, 500 mg to 10 mg, with Non-Accredited Calibration Certificate,
- 30391195 – ASTM Class 4 Calibration Weight Set, 500 mg to 10 mg, No Certificate,
- 30391040 – ASTM Class 4 Calibration Weight Set, 500 mg to 10 mg, with Non-Accredited Calibration Certificate,
- 80781029 – ASTM Class 1 Calibration Weight Set, 100 g to 1 g, No Certificate,
- 80781030 – ASTM Class 1 Calibration Weight Set, 100 g to 1 g, with Accredited Calibration Certificate,
- 30391554 – ASTM Class 1 Calibration Weight Set, 100 g to 1 g, with Non-Accredited Calibration Certificate,
- 30391208 – ASTM Class 4 Calibration Weight Set, 100 g to 1 g, No Certificate,
- 30391242 – ASTM Class 4 Calibration Weight Set, 100 g to 1 g, with Accredited Calibration Certificate,
- 30391055 – ASTM Class 4 Calibration Weight Set, 100 g to 1 g, with Non-Accredited Calibration Certificate,
- 30391365 – ASTM Class 1 Calibration Weight Set, 20 g to 100 mg, with Accredited Calibration Certificate,
- 30391233 – ASTM Class 4 Calibration Weight Set, 20 g to 100 mg, with Accredited Calibration Certificate,
- 80781034 – ASTM Class 1 Calibration Weight Set, (2) 200 g to 1 g, with Accredited Calibration Certificate,
- 30390058 – ASTM Class 1 Calibration Weight Set, (2) 200 g to 1 g, with Non-Accredited Calibration Certificate,
Applications
- Analytical balance calibration
- Moisture analyzer and precision balance checks
- GLP, GMP and ISO 17025 lab documentation
- Mass comparison and reference standards
- Instrument service and calibration labs
