30 kg - 5 kg Single Calibration Weight, ASTM Class 1

Key Highlights

• Designed to meet the exacting tolerances of ASTM Class 1.

• Supplied as a single, heavy-capacity weight for efficient calibration.

• Nominal value is clearly marked on the weight for easy identification.

• Features a sealing cavity for adjusting material in 100 g or larger capacities.

• Constructed from material with a standardized density of 7.84 g/cm³.

This single calibration weight serves as a fundamental mass standard for calibrating and verifying the performance of scales with capacities at 30 kg, 25 kg, 20 kg, 15 kg, 10 kg, and 5 kg. Its classification to ASTM Class 1 specifications ensures it provides the high level of accuracy required for quality control procedures, legal-for-trade verification, and stringent laboratory applications where measurement traceability is paramount.

The weight is engineered with a durable, corrosion-resistant finish and includes a sealed adjustment cavity. This design allows for precise mass adjustment during manufacture to achieve the strict ASTM Class 1 tolerances and ensures long-term stability by protecting the internal adjusting material from environmental contamination. The standardized density minimizes the potential for errors due to air buoyancy during highly precise calibrations.

Add this trusted mass standard to your metrology toolkit. Contact our team today to request pricing, confirm availability, or speak with a calibration specialist for your laboratory or metrology requirements.

Free shipping: To the 48 contiguous states (residential, farm and rural deliveries may carry a carrier surcharge).
Ship date: Rice Lake Weighing Systems products ship on the maker's own lead time; we confirm the date when you order, or call 844-735-5386 before you buy.
Tracking: Emailed the moment your order ships.
Questions: (844) 735-5386 or info@selletonscales.com.