WEIGHT SETS CLASS E 1 Ohaus (30390911)

WEIGHT SETS CLASS E 1 Ohaus (30390911)

The WEIGHT SETS CLASS E 1 Ohaus (30390911) is a high-capacity, ultra-precision calibration weight set designed for accurate mass calibration and verification of analytical balances, precision balances, and mass comparators. Manufactured in accordance with OIML Class E1 requirements, this set delivers excellent accuracy, stability, and long-term reliability for professional laboratory and metrology applications.

This E1 weight set covers a mass range from 1 g up to 5 kg with a total set capacity of 11.11 kg, making it well suited for calibration tasks involving higher-capacity balances while maintaining strict accuracy requirements. Each weight is produced using one-piece construction to minimize uncertainty and ensure mechanical robustness. Manufactured from Troemner Alloy 8, the weights provide uniform density, corrosion resistance, and consistent performance over extended periods. All components are securely housed in a durable protective case for safe handling, storage, and transport.

Key Features

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

• Wide mass range suitable for analytical and high-capacity balance calibration

• One-piece construction for enhanced stability and reduced measurement uncertainty

• Troemner Alloy 8 material for consistent density and long service life

• Protective storage case included for safe handling and transport

• Designed for professional laboratory and metrology environments

• Manufactured in the USA for assured quality and traceability

Technical Specifications

• OIML class: E1

• Weight set range: 1 g to 5 kg

• Total set capacity: 11.11 kg

• Total pieces: 16

• Construction: One-piece

• Density at 20 °C: 8.03 g/cm³

• Weight material: Troemner Alloy 8

• 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

• Case dimensions (L × H × W): 7.3 × 15.2 × 19.2 in (18.542 × 38.608 × 48.768 cm)

• Protective case: Included

• Country of origin: USA

Applications

• Calibration and verification of analytical and precision balances

• Reference mass standards for mass comparators

• Metrology and accredited calibration laboratories

• Pharmaceutical, chemical, and academic research facilities

• Quality control and regulatory compliance testing