Product Description
When a balance check has to stand up to an auditor, a single well-characterized reference mass is often all you need. These two-piece ASTM individual weights from OHAUS are offered in Class 1 for high-precision work and Class 4 for routine verification, in 70 g, 80 g, 600 g and 8 kg values, so you can match the test load to the instrument you are actually checking.
This listing is for OHAUS item number 30391146: ASTM Class 4 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, with Non-Accredited Calibration Certificate. The 70 g, 80 g and 600 g values are straight cylinders machined from 316 stainless steel and supplied with a protective case, while the 8 kg value uses a grip-handle design in 303 stainless steel for safer lifting. Two-piece construction allows the mass to be adjusted during manufacture and recalibration. Each value can be ordered with no certificate, a traceable non-accredited certificate, or an ISO/IEC 17025 accredited calibration certificate, and the weights are made in the USA. LIGHT LABS supplies the OHAUS line with knowledgeable support from our Englewood, Colorado team.
Key Features
- ASTM Class Choice – Class 1 tolerances for high-precision balances down to 0.1 mg readability, or Class 4 for general laboratory and production checks
- Two-Piece Construction – an adjusting cavity lets the weight be brought back to nominal value during recalibration
- Stainless Steel Body – 316 stainless steel cylinders and 303 stainless steel grip-handle weights resist corrosion and wear
- Certificate Options – choose no certificate, a traceable non-accredited certificate, or an ISO/IEC 17025 accredited certificate
- Protective Case – cylindrical gram weights ship in a fitted case to keep surfaces clean between uses
- Made in the USA – manufactured domestically for consistent quality and documentation
Specifications
| Item Number | 30391146 |
| Brand | OHAUS |
| Description | ASTM Class 4 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, with Non-Accredited Calibration Certificate |
| Calibration Certificate | Traceable Certificate |
| ASTM Class | 4 |
| Weight Value | 70 g |
| Design | Cylindrical |
| Protective Case | Included |
| Construction | Two-piece |
| Density at 20°C | 7.95 g/cm3 |
| Dimensions | 0.79 in x 0.95 in (1.994 cm x 2.413 cm) (HxØ) |
| Dimensions in Case | 2.5 in x 2 in (6.35 cm x 5.08 cm) (HxØ) |
| Weight Material | 316 Stainless Steel |
| Weight Tolerance | 1.6 mg |
| Wgt Origin (USA) | USA |
Related Models
- 30391474 – ASTM Class 1 Calibration Weight, 600 g, Two-Piece Cylindrical, EB, No Certificate
- 30391529 – ASTM Class 1 Calibration Weight, 600 g, Two-Piece Cylindrical, EB, with Accredited Calibration Certificate
- 30391505 – ASTM Class 1 Calibration Weight, 600 g, Two-Piece Cylindrical, EB, with Non-Accredited Calibration Certificate
- 30391124 – ASTM Class 4 Calibration Weight, 600 g, Two-Piece Cylindrical, EB, No Certificate
- 30391181 – ASTM Class 4 Calibration Weight, 600 g, Two-Piece Cylindrical, EB, with Accredited Calibration Certificate
- 30391155 – ASTM Class 4 Calibration Weight, 600 g, Two-Piece Cylindrical, EB, with Non-Accredited Calibration Certificate
- 30391465 – ASTM Class 1 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, No Certificate
- 30391524 – ASTM Class 1 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, with Accredited Calibration Certificate
- 30391496 – ASTM Class 1 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, with Non-Accredited Calibration Certificate
- 30391115 – ASTM Class 4 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, No Certificate
- 30391177 – ASTM Class 4 Calibration Weight, 70 g, Two-Piece Cylindrical, EB, with Accredited Calibration Certificate
- 30391483 – ASTM Class 1 Calibration Weight, 8 kg, Two-Piece Grip Handle, EB, No Certificate
- 30391534 – ASTM Class 1 Calibration Weight, 8 kg, Two-Piece Grip Handle, EB, with Accredited Calibration Certificate
- 30391514 – ASTM Class 1 Calibration Weight, 8 kg, Two-Piece Grip Handle, EB, with Non-Accredited Calibration Certificate
Applications
- Routine balance and scale verification
- Calibration of high-precision analytical balances
- Reference standard for calibrating lower-class weights
- ISO 9001 and GLP quality audits
- Eccentricity and linearity checks
- Bench and floor scale testing with the 8 kg weight
