Product Description
Routine balance checks go faster and hold up better under review when the test mass is a known ASTM-classed weight sized to the job. This group of OHAUS ASTM individual calibration weights covers nominal values from 5 mg to 5 kg in ASTM Class 1 and 4, so you can match tolerance to the readability of the balance or scale being tested. Each value is offered with no certificate, a non-accredited traceable certificate, or an ISO/IEC 17025 accredited certificate, letting you pay only for the documentation your quality system requires.
This listing is for OHAUS item number 30391481: ASTM Class 1 Calibration Weight, 5 kg, Two-Piece EB Cylindrical, No Certificate. Weights are manufactured in the USA to the tolerances of ASTM E617, using non-magnetic stainless steel so that density and magnetic effects stay within class limits. By style, milligram values are one-piece flat weights; gram and kilogram values are two-piece designs with an adjusting cavity, offered as knob-style cylinders or EB-style straight cylinders and grip-handle weights at the heavy end. Handle them with gloves, forceps or a lifting tool, keep them in their storage case between uses, and recalibrate on a fixed interval to maintain traceability. Order it from LIGHT LABS alongside the rest of your OHAUS balances, weights and lab equipment.
Key Features
- ASTM E617 Classes 1 and 4 – Choose the tolerance class that fits your balance, from Class 1 reference work to Class 4 routine checks
- Three Certificate Levels – Order with no certificate, a non-accredited traceable certificate, or an ISO/IEC 17025 accredited certificate
- Corrosion-Resistant Stainless Steel – Non-magnetic stainless alloys hold their mass and resist wear in everyday lab use
- Two-Piece Adjustable Construction – Gram and kilogram weights have a sealed adjusting cavity so the mass can be restored during recalibration
- Multiple Body Styles – Knob-style, straight cylindrical, grip-handle and flat milligram forms suit different balance pans and handling needs
- Made in the USA – Weights in this group are produced in the United States
Specifications
| Item Number | 30391481 |
| Brand | OHAUS |
| Description | ASTM Class 1 Calibration Weight, 5 kg, Two-Piece EB Cylindrical, No Certificate |
| Weight Value | 5 kg |
| ASTM Class | 1 |
| Construction | Two-piece |
| Design | Cylindrical (EB style) |
| Calibration Certificate | No Certificate |
| Weight Material | 303 Stainless Steel |
| Standard | ASTM E617 |
| ASTM Classes in This Group | 1 and 4 |
| Nominal Values in This Group | 5 mg to 5 kg |
| Certificate Options | No Certificate; Non-Accredited (Traceable); ISO/IEC 17025 Accredited |
| Country of Origin | USA |
Related Models
- 80780140 – ASTM Class 4 Calibration Weight, 400 g, Two-Piece EB Cylindrical, with Accredited Calibration Certificate
- 30391153 – ASTM Class 4 Calibration Weight, 400 g, Two-Piece EB Cylindrical, with Non-Accredited Calibration Certificate
- 80781131 – ASTM Class 1 Calibration Weight, 5 g, Two-Piece Knob Style, No Certificate
- 80781132 – ASTM Class 1 Calibration Weight, 5 g, Two-Piece Knob Style, with Accredited Calibration Certificate
- 30391590 – ASTM Class 1 Calibration Weight, 5 g, Two-Piece Knob Style, with Non-Accredited Calibration Certificate
- 80780074 – ASTM Class 4 Calibration Weight, 5 g, Two-Piece Knob Style, No Certificate
- 80850296 – ASTM Class 4 Calibration Weight, 5 g, Two-Piece Knob Style, with Accredited Calibration Certificate
- 30391091 – ASTM Class 4 Calibration Weight, 5 g, Two-Piece Knob Style, with Non-Accredited Calibration Certificate
- 30391420 – ASTM Class 1 Calibration Weight, 5 kg, Two-Piece Knob Style, No Certificate
- 80781001 – ASTM Class 1 Calibration Weight, 5 kg, Two-Piece EB Grip Handle, No Certificate
- 30391533 – ASTM Class 1 Calibration Weight, 5 kg, Two-Piece EB Cylindrical, with Accredited Calibration Certificate
- 30391453 – ASTM Class 1 Calibration Weight, 5 kg, Two-Piece Knob Style, with Accredited Calibration Certificate
- 80781002 – ASTM Class 1 Calibration Weight, 5 kg, Two-Piece EB Grip Handle, with Accredited Calibration Certificate
- 30391602 – ASTM Class 1 Calibration Weight, 5 kg, Two-Piece Knob Style, with Non-Accredited Calibration Certificate
Applications
- Routine daily and weekly balance performance checks
- Calibration of analytical, precision and top-loading balances
- ISO 9001, GLP and GMP quality-audit documentation
- Repeatability, linearity and eccentricity testing
- Replacing lost or out-of-tolerance weights in an existing kit
- Industrial bench and floor scale verification
