Product Description
Fill gaps in your mass-standard inventory with OHAUS UltraClass individual reference weights, available in values such as 60 g, 70 g, 80 g, 500 g, 600 g and 8 kg. Each one gives labs and calibration technicians a tight-tolerance reference for verifying precision balances and comparing working weights.
This listing is for OHAUS item number 30390248: UltraClass ASTM Reference Weight, 500 mg, One-Piece Flat, with Accredited Calibration Certificate. Gram-range weights are two-piece stainless steel cylinders, the 8 kg weights use an EB grip-handle design, and the 500 mg value is a one-piece flat wafer. Materials include Alloy 8 stainless steel and 303, 304 or 316 stainless steel. Each value is offered with no certificate, a traceable non-accredited certificate, or an ISO/IEC 17025 accredited certificate. LIGHT LABS ships genuine OHAUS products and can help you match accessories and parts to your instrument.
Key Features
- Primary-Reference Accuracy – UltraClass tolerances suit calibrating ASTM Class 1 and lower weights and balances that read to 0.01 mg
- Value-Matched Design – Two-piece cylinders from 1 g up, flat one-piece wafers at 500 mg and below for tweezer handling
- Certificate Choice – Order with no certificate, a traceable certificate, or an ISO/IEC 17025 accredited certificate with uncertainty
- Corrosion-Resistant Materials – Alloy 8, 303, 304 or 316 stainless steel, with aluminum for some milligram values
- Grip-Handle Options – EB grip-handle versions of heavy kilogram values allow safer lifting and placement
Specifications
| Item Number | 30390248 |
| Brand | OHAUS |
| Description | UltraClass ASTM Reference Weight, 500 mg, One-Piece Flat, with Accredited Calibration Certificate |
| Weight Value | 500 mg |
| Weight Grade | UltraClass |
| Style | ASTM |
| Construction | One-Piece |
| Certificate | ISO/IEC 17025 Accredited Certificate |
| Material | 304 Stainless Steel |
| Certificate Options | None, Traceable, ISO/IEC 17025 Accredited |
| Country of Origin | USA |
Related Models
- 30390195 – UltraClass ASTM Reference Weight, 500 g, Two-Piece Cylindrical, No Certificate
- 30390285 – UltraClass EB Cylindrical Reference Weight, 500 g, Two-Piece, No Certificate
- 30390347 – UltraClass EB Cylindrical Reference Weight, 500 g, Two-Piece, with Accredited Calibration Certificate
- 30390260 – UltraClass ASTM Reference Weight, 500 g, Two-Piece Cylindrical, with Accredited Calibration Certificate
- 30390316 – UltraClass EB Cylindrical Reference Weight, 500 g, Two-Piece, with Non-Accredited Calibration Certificate
- 30390227 – UltraClass ASTM Reference Weight, 500 g, Two-Piece Cylindrical, with Non-Accredited Calibration Certificate
- 30390183 – UltraClass ASTM Reference Weight, 500 mg, One-Piece Flat, No Certificate
- 30390276 – UltraClass EB Cylindrical Reference Weight, 60 g, Two-Piece, No Certificate
- 30390338 – UltraClass EB Cylindrical Reference Weight, 60 g, Two-Piece, with Accredited Calibration Certificate
- 30390307 – UltraClass EB Cylindrical Reference Weight, 60 g, Two-Piece, with Non-Accredited Calibration Certificate
- 30390286 – UltraClass EB Cylindrical Reference Weight, 600 g, Two-Piece, No Certificate
- 30390348 – UltraClass EB Cylindrical Reference Weight, 600 g, Two-Piece, with Accredited Calibration Certificate
- 30390317 – UltraClass EB Cylindrical Reference Weight, 600 g, Two-Piece, with Non-Accredited Calibration Certificate
- 30390277 – UltraClass EB Cylindrical Reference Weight, 70 g, Two-Piece, No Certificate
Applications
- Calibration of analytical and semi-micro balances
- Primary reference for ASTM Class 1 working weights
- Metrology and calibration laboratories
- ISO/IEC 17025 and GLP quality programs
- Routine balance performance checks
- Mass comparison and traceability chains
