Product Description
Traceability starts with a reference you can trust, and these OHAUS ASTM reference weight sets are built to provide exactly that. Made to UltraClass tolerances that exceed ASTM Class 1, they link national mass standards to the working weights and high-precision balances used every day. Choose the range that matches your balances, from 500 mg fractional sets to 25 kg reference sets.
This listing is for OHAUS item number 30390017: UltraClass ASTM Reference Weight Set, 2 x 200 g to 1 g, with Accredited Calibration Certificate. Gram and kilogram pieces up to 1 kg are Alloy 8 stainless steel, pieces 2 kg and above are 316 stainless steel, and milligram pieces are 304 stainless steel or aluminum depending on size. Larger weights use a two-piece cylindrical design with a handling knob, and weights 500 mg and below are flat with one end turned up. Sets come in a fitted protective case and are offered with no certificate, a non-accredited certificate or an ISO/IEC 17025 accredited certificate. Order it from LIGHT LABS alongside the rest of your OHAUS balances, weights and lab equipment.
Key Features
- UltraClass Tolerances – Reference-grade sets built to tighter-than-ASTM Class 1 tolerances for calibrating high-precision balances with readability down to 0.01 mg
- Alloy 8 Stainless Steel – Weights from 1 g upward are machined from non-magnetic Alloy 8 stainless steel with a density of about 8.03 g/cm³ for low air-buoyancy error
- Adjustable Two-Piece Design – Weights 1 g and above use a two-piece construction with a handling knob so the mass can be adjusted during recalibration
- Easy-Handling Fractional Weights – Milligram weights are one-piece flat pieces with one end turned up for pickup with forceps
- Fitted Protective Case – Each set ships in a fitted case that keeps every piece in its own cavity to prevent contact damage and contamination
- Certificate Options – Available with no certificate, a non-accredited traceable certificate, or an ISO/IEC 17025 accredited calibration certificate
Specifications
| Item Number | 30390017 |
| Brand | OHAUS |
| Description | UltraClass ASTM Reference Weight Set, 2 x 200 g to 1 g, with Accredited Calibration Certificate |
| Weight Set Range | 2 x 200 g - 1 g |
| ASTM Class | UltraClass (tighter than ASTM Class 1) |
| Calibration Certificate | ISO/IEC 17025 Accredited Calibration Certificate |
| Set Capacity | 600 g |
| Set Total Pieces | 11 |
| Weight Material | 1 g and above: Alloy 8 stainless steel |
Related Models
- 30390109 – UltraClass ASTM Reference Weight Set, 50 g to 1 g, with Non-Accredited Calibration Certificate
- 30390062 – UltraClass ASTM Reference Weight Set, 500 mg to 10 mg, No Certificate
- 30390077 – UltraClass ASTM Reference Weight Set, 100 g to 1 g, No Certificate
- 30390114 – UltraClass ASTM Reference Weight Set, 100 g to 1 g, with Non-Accredited Calibration Certificate
- 30390140 – UltraClass ASTM Reference Weight Set, 20 g to 100 mg, with Accredited Calibration Certificate
- 30390103 – UltraClass ASTM Reference Weight Set, 20 g to 100 mg, with Non-Accredited Calibration Certificate
- 30390153 – UltraClass ASTM Reference Weight Set, 200 g to 1 g, with Accredited Calibration Certificate
- 30390116 – UltraClass ASTM Reference Weight Set, 200 g to 1 g, with Non-Accredited Calibration Certificate
- 30390013 – UltraClass ASTM Reference Weight Set, 2 x 200 g to 1 g, with Non-Accredited Calibration Certificate
- 30390145 – UltraClass ASTM Reference Weight Set, 50 g to 100 mg, with Accredited Calibration Certificate
- 30390108 – UltraClass ASTM Reference Weight Set, 50 g to 100 mg, with Non-Accredited Calibration Certificate
- 30390155 – UltraClass ASTM Reference Weight Set, 500 g to 1 g, with Accredited Calibration Certificate
- 30390118 – UltraClass ASTM Reference Weight Set, 500 g to 1 g, with Non-Accredited Calibration Certificate
- 30390135 – UltraClass ASTM Reference Weight Set, 500 mg to 1 mg, with Accredited Calibration Certificate
Applications
- Calibrating analytical and semi-micro balances
- Primary reference for calibrating working mass standards
- Maintaining traceability between national standards and ASTM Class 1 weights
- Metrology and calibration laboratories
- ISO 9001, GLP and GMP balance verification
- Pharmaceutical and research QA/QC programs
