Product Description
Confidence in every weighing result starts with a known mass, and these OHAUS ASTM weights give you one at the exact value you need. This selection runs from 10 mg and 100 mg flats through 100 g, 150 g and 1,000 g cylinders up to 10 kg, with straight cylindrical, knob-top and EB-style options. Each is available with no certificate, a traceable certificate or an ISO/IEC 17025 accredited certificate.
This listing is for OHAUS item number 30391080: ASTM Class 4 Calibration Weight, 10 mg, One-Piece, with Non-Accredited Calibration Certificate. Sub-gram weights are one-piece stainless steel flats, and gram-range and larger weights are two-piece cylinders with polished surfaces that resist contamination. Class 1 tolerances support reference-level work on high-resolution balances, while Class 4 tolerances suit routine verification on precision and toploading balances, both as defined in ASTM E617. Store each weight in its protective case and handle it with tweezers or gloves to preserve its calibrated value. Add it to your LIGHT LABS order and keep your lab running with genuine OHAUS equipment.
Key Features
- Precise Value Selection – individual 10 mg to 10 kg weights let you target specific load points in a calibration routine
- ASTM E617 Tolerances – Class 1 and Class 4 options match the resolution of the balance under test
- Accredited or Traceable – certificates document measured mass, tolerance and uncertainty for audit trails
- Cylindrical Designs – knob-top and straight cylindrical styles stand stably on the weighing pan
- Protective Storage – cased weights stay clean and ready for the next check
Specifications
| Item Number | 30391080 |
| Brand | OHAUS |
| Description | ASTM Class 4 Calibration Weight, 10 mg, One-Piece, with Non-Accredited Calibration Certificate |
| Calibration Certificate | Traceable Certificate |
| ASTM Class | 4 |
| Weight Value | 10 mg |
| Design | Flat |
| Protective Case | Included |
| Construction | One-piece |
| Density at 20°C | 7.95 g/cm3 |
| Dimensions | 0.15 in x 0.08 in x 0.18 in (0.39 cm x 0.203 cm x 0.47 cm) (LxHxW) |
| Dimensions in Case | 2.5 in x 2 in (6.35 cm x 5.08 cm) (HxØ) |
| Weight Material | 304 Stainless Steel |
| Weight Tolerance | 0.06 mg |
| Wgt Origin (USA) | USA |
| Standard | ASTM E617 |
| ASTM Classes in This Group | Class 1, Class 4 |
| Certificate Options | None, Traceable (Non-Accredited), ISO/IEC 17025 Accredited |
| Origin | USA |
Related Models
- 30391104 – ASTM Class 4 Calibration Weight, 10 kg, Two-Piece, with Non-Accredited Calibration Certificate
- 80781109 – ASTM Class 1 Calibration Weight, 10 mg, One-Piece, No Certificate
- 80781110 – ASTM Class 1 Calibration Weight, 10 mg, One-Piece, with Accredited Calibration Certificate
- 30391579 – ASTM Class 1 Calibration Weight, 10 mg, One-Piece, with Non-Accredited Calibration Certificate
- 80780059 – ASTM Class 4 Calibration Weight, 10 mg, One-Piece, No Certificate
- 80850283 – ASTM Class 4 Calibration Weight, 10 mg, One-Piece, with Accredited Calibration Certificate
- 80781141 – ASTM Class 1 Calibration Weight, 100 g, Two-Piece, No Certificate
- 80780020 – ASTM Class 1 Calibration Weight, 100 g, Two-Piece EB Cylindrical, No Certificate
- 80850268 – ASTM Class 1 Calibration Weight, 100 g, Two-Piece EB Cylindrical, with Accredited Calibration Certificate
- 80781142 – ASTM Class 1 Calibration Weight, 100 g, Two-Piece, with Accredited Calibration Certificate
- 30391595 – ASTM Class 1 Calibration Weight, 100 g, Two-Piece, with Non-Accredited Calibration Certificate
- 30391498 – ASTM Class 1 Calibration Weight, 100 g, Two-Piece EB Cylindrical, with Non-Accredited Calibration Certificate
- 80780133 – ASTM Class 4 Calibration Weight, 100 g, Two-Piece EB Cylindrical, No Certificate
- 80780063 – ASTM Class 4 Calibration Weight, 100 g, Two-Piece, No Certificate
Applications
- Span and linearity checks on toploading balances
- Eccentricity testing at specific loads
- Topping up or rebuilding calibration weight sets
- GLP and GMP balance verification records
- Teaching and university laboratories
