Product Description
Audit-ready balance checks start with traceable reference masses, and these OHAUS ASTM weight sets put a full sequence of nominal values in one fitted case. Choose Class 1 for high-precision and analytical balances or Class 4 for general laboratory and industrial balances, in ranges from milligram micro sets up to 25 kg and 50 kg sets for floor scales.
This listing is for OHAUS item number 30391256: ASTM Class 4 Calibration Weight Set, 20 kg to 1 g, with Accredited Calibration Certificate,. Every piece is manufactured in the USA to ASTM E617 class 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
- Two Accuracy Classes – ASTM Class 1 for reference work and Class 4 for routine checks
- Wide Nominal Ranges – Micro sets from 1 mg up to heavy sets topping out at 50 kg
- Flexible Certification – No certificate, traceable or ISO/IEC 17025 accredited options
- Two-Piece Adjustable Design – Most gram and kilogram pieces have a sealed adjustment cavity for recalibration
- Organized Storage – Fitted protective case keeps pieces clean and easy to identify
Specifications
| Item Number | 30391256 |
| Brand | OHAUS |
| Description | ASTM Class 4 Calibration Weight Set, 20 kg to 1 g, with Accredited Calibration Certificate, |
| Calibration Certificate | ISO/IEC 17025 Accredited Certificate |
| ASTM Class | 4 |
| Weight Set Range | 20 kg - 1 g |
| Set Capacity | 40 kg |
| Set Total Pieces | 18 |
| Protective Case | Included |
| Construction | 1 g and above are two-piece; 500 mg and below are one-piece |
| Density at 20°C | Below 2 kg are 8.03 g/cm3;2 kg and above are 7.95 g/cm3 |
| Dimensions in Case | 11.7 in x 19.7 in x 24.6 in (29.718 cm x 50.038 cm x 62.484 cm) (LxHxW) |
| Set Contents | (2) 2 g;(2) 200 g;20 kg;10 g;(2) 20 g;100 g;10 kg;1 g;50 g;(2) 2 kg;5 g;1 kg;500 g;5 kg |
| Weight Material | ≥2 kg are 316 Stainless Steel;Below 2 kg are Alloy |
| Wgt Origin (USA) | USA |
Related Models
- 30391339 – ASTM Class 1 Calibration Weight Set, 100 g to 10 mg, No Certificate,
- 30391552 – ASTM Class 1 Calibration Weight Set, 100 g to 10 mg, with Non-Accredited Calibration Certificate,
- 30391206 – ASTM Class 4 Calibration Weight Set, 100 g to 10 mg, No Certificate,
- 30391053 – ASTM Class 4 Calibration Weight Set, 100 g to 10 mg, with Non-Accredited Calibration Certificate,
- 30391335 – ASTM Class 1 Calibration Weight Set, 50 g to 5 mg, No Certificate,
- 30391367 – ASTM Class 1 Calibration Weight Set, 50 g to 5 mg, with Accredited Calibration Certificate,
- 30391546 – ASTM Class 1 Calibration Weight Set, 50 g to 5 mg, with Non-Accredited Calibration Certificate,
- 30391201 – ASTM Class 4 Calibration Weight Set, 50 g to 5 mg, No Certificate,
- 30391235 – ASTM Class 4 Calibration Weight Set, 50 g to 5 mg, with Accredited Calibration Certificate,
- 30391047 – ASTM Class 4 Calibration Weight Set, 50 g to 5 mg, with Non-Accredited Calibration Certificate,
- 30391338 – ASTM Class 1 Calibration Weight Set, 100 g to 5 mg, No Certificate,
- 30391551 – ASTM Class 1 Calibration Weight Set, 100 g to 5 mg, with Non-Accredited Calibration Certificate,
- 30391205 – ASTM Class 4 Calibration Weight Set, 100 g to 5 mg, No Certificate,
- 30391052 – ASTM Class 4 Calibration Weight Set, 100 g to 5 mg, with Non-Accredited Calibration Certificate,
Applications
- Analytical and precision balance calibration
- Industrial bench and floor scale testing
- Pharmaceutical and food QC checks
- Metrology lab reference standards
- Weighing instrument service and repair
