WEIGHT SETS CLASS E 1 Ohaus (30390906)

WEIGHT SETS CLASS E 1 Ohaus (30390906)

The WEIGHT SETS CLASS E 1 Ohaus (30390906) is a high-capacity, ultra-precision calibration weight set engineered for accurate mass calibration and verification of analytical balances, precision balances, high-capacity balances, and mass comparators. Fully compliant with OIML Class E1 requirements and supplied with an ISO/IEC 17025 accredited calibration certificate, this set ensures excellent traceability, stability, and confidence for regulated laboratory and metrology applications.

This E1 weight set covers a wide mass range from 1 g up to 20 kg, with a total set capacity of 40 kg, making it suitable for higher-capacity calibration tasks while maintaining strict accuracy standards. Each weight is manufactured using one-piece construction to minimize uncertainty and provide long-term dimensional stability. Material selection is optimized by weight value: Troemner Alloy 8 is used for weights up to 10 kg, while 316 stainless steel is applied for weights above 10 kg, ensuring consistent density, corrosion resistance, and reliable performance. All components are securely organized in a robust protective case for safe handling, storage, and transport.

Key Features

• OIML Class E1 classification for ultra-high accuracy mass calibration

• Supplied with ISO/IEC 17025 accredited calibration certificate

• Wide mass range for precision to high-capacity balance calibration

• One-piece construction for superior mechanical stability

• Optimized material selection for durability and consistent density

• Heavy-duty protective storage case included

• Manufactured in the USA for assured quality and traceability

Technical Specifications

• OIML class: E1

• Calibration certificate: ISO/IEC 17025 accredited

• Weight set range: 1 g to 20 kg

• Total set capacity: 40 kg

• Total pieces: 18

• Construction: One-piece

• Density at 20 °C: 8.03 g/cm³

• Weight material:

  • ≤10 kg: Troemner Alloy 8

  • 10 kg: 316 stainless steel

• Set contents:

  • 1 g

  • 2 g (2 pieces)

  • 5 g

  • 10 g

  • 20 g (2 pieces)

  • 50 g

  • 100 g

  • 200 g (2 pieces)

  • 500 g

  • 1 kg

  • 2 kg (2 pieces)

  • 5 kg

  • 10 kg

  • 20 kg

• Case dimensions (L × H × W): 11.7 × 19.7 × 24.6 in (29.718 × 50.038 × 62.484 cm)

• Protective case: Included

• Country of origin: USA

Applications

• Calibration and verification of analytical, precision, and high-capacity balances

• Reference mass standards for mass comparators

• Metrology and accredited calibration laboratories

• Pharmaceutical, chemical, and industrial quality control

• Regulatory compliance and validation testing