Product Description
Replace a single lost or out-of-tolerance mass standard without buying a whole new set. These OHAUS individual ASTM weights cover values from 1 mg flats to 10 kg grip-handle weights, letting you check a balance at exactly the load points your procedure calls for. Pick the certificate level that matches your quality system, from no certificate for internal checks to a fully accredited report.
This listing is for OHAUS item number 30391450: ASTM Class 1 Calibration Weight, 1 kg, Two-Piece, with Accredited Calibration Certificate. Milligram weights are one-piece stainless steel flats designed for tweezer handling, while gram and kilogram weights use two-piece construction in knob-top, straight cylindrical or grip-handle styles. Tolerances follow ASTM E617 for Class 1 or Class 4, and accredited versions ship with an ISO/IEC 17025 certificate listing measured values and uncertainty. A protective case is supplied with most values to keep surfaces clean between uses. Add it to your LIGHT LABS order and keep your lab running with genuine OHAUS equipment.
Key Features
- Single-Value Flexibility – buy only the mass you need to fill a gap in a set or target a specific test point
- ASTM Class 1 or Class 4 – precision tolerances for reference work or economical tolerances for routine verification
- Three Certificate Levels – choose no certificate, a traceable non-accredited certificate or an ISO/IEC 17025 accredited certificate
- Multiple Styles – one-piece flats, knob-top cylinders, straight cylinders and grip-handle weights suit different balances and capacities
- Durable Stainless Construction – corrosion-resistant materials hold mass value over long service life
Specifications
| Item Number | 30391450 |
| Brand | OHAUS |
| Description | ASTM Class 1 Calibration Weight, 1 kg, Two-Piece, with Accredited Calibration Certificate |
| Calibration Certificate | ISO/IEC 17025 Accredited Certificate |
| ASTM Class | 1 |
| Weight Value | 1 kg |
| Design | Cylindrical with handling knob |
| Protective Case | Included |
| Uncertainty | 0.5 mg |
| Construction | Two-piece |
| Density at 20°C | 8.03 g/cm3 |
| Dimensions | 2.94 in x 2.1 in (7.457 cm x 5.334 cm) (HxØ) |
| Dimensions in Case | 4.5 in x 3.5 in (11.43 cm x 8.89 cm) (HxØ) |
| Weight Material | Alloy 8;Alloy 8 |
| Weight Tolerance | 2.5 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
- 80781125 – ASTM Class 1 Calibration Weight, 1 g, Two-Piece, No Certificate
- 80781126 – ASTM Class 1 Calibration Weight, 1 g, Two-Piece, with Accredited Calibration Certificate
- 80780061 – ASTM Class 4 Calibration Weight, 1 g, Two-Piece, No Certificate
- 80850285 – ASTM Class 4 Calibration Weight, 1 g, Two-Piece, with Accredited Calibration Certificate
- 30391088 – ASTM Class 4 Calibration Weight, 1 g, Two-Piece, with Non-Accredited Calibration Certificate
- 30391417 – ASTM Class 1 Calibration Weight, 1 kg, Two-Piece, No Certificate
- 30391599 – ASTM Class 1 Calibration Weight, 1 kg, Two-Piece, with Non-Accredited Calibration Certificate
- 30391287 – ASTM Class 4 Calibration Weight, 1 kg, Two-Piece, No Certificate
- 30391320 – ASTM Class 4 Calibration Weight, 1 kg, Two-Piece, with Accredited Calibration Certificate
- 30391100 – ASTM Class 4 Calibration Weight, 1 kg, Two-Piece, with Non-Accredited Calibration Certificate
- 80781101 – ASTM Class 1 Calibration Weight, 1 mg, One-Piece, No Certificate
- 80781102 – ASTM Class 1 Calibration Weight, 1 mg, One-Piece, with Accredited Calibration Certificate
- 30391575 – ASTM Class 1 Calibration Weight, 1 mg, One-Piece, with Non-Accredited Calibration Certificate
- 80780058 – ASTM Class 4 Calibration Weight, 1 mg, One-Piece, No Certificate
Applications
- Daily and weekly balance performance checks
- Replacing lost or damaged weights in existing sets
- Calibration at specific SOP test loads
- Minimum weight and repeatability testing
- Quality control and metrology laboratories
