WEIGHT SETS CLASS E 1 Ohaus (30390922)

WEIGHT SETS CLASS E 1 Ohaus (30390922)

The WEIGHT SETS CLASS E 1 Ohaus (30390922) is a comprehensive high-precision calibration weight set designed for ultra-accurate mass calibration and verification of analytical balances, microbalances, and high-resolution laboratory instruments. Manufactured in accordance with OIML Class E1 standards, this set is intended for applications where minimal uncertainty, excellent stability, and high traceability are essential.

This E1 weight set covers a wide mass range from 1 mg up to 100 g, making it suitable for both micro-mass calibration and higher-capacity analytical balance verification. Each weight is manufactured with one-piece construction to ensure superior mechanical stability and long-term dimensional accuracy. The set uses optimized materials based on weight value, combining aluminum, stainless steel, and Troemner Alloy 8 to achieve consistent density, durability, and reliable performance. All weights are neatly arranged in a 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 microbalance and analytical balance calibration

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

• Optimized material selection for consistent density and long-term reliability

• Complete set supplied in a durable protective storage case

• 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 mg to 100 g

• Total set capacity: 211.11 g

• Total pieces: 21

• Construction: One-piece

• Density at 20 °C:

  • Below 5 mg: 2.70 g/cm³

  • 5 mg to 500 mg: 7.95 g/cm³

  • 1 g and above: 8.03 g/cm³

• Weight material:

  • Below 5 mg: 3003-H14 aluminum

  • 5 mg to 500 mg: 316 stainless steel

  • 1 g and above: Troemner Alloy 8

• Set contents:

  • 1 mg

  • 2 mg (2 pieces)

  • 5 mg

  • 10 mg

  • 20 mg (2 pieces)

  • 50 mg

  • 100 mg

  • 200 mg (2 pieces)

  • 500 mg

  • 1 g

  • 2 g (2 pieces)

  • 5 g

  • 10 g

  • 20 g (2 pieces)

  • 50 g

  • 100 g

• Case dimensions (L × H × W): 3.5 × 7 × 8 in (8.89 × 17.78 × 20.32 cm)

• Protective case: Included

• Country of origin: USA

Applications

• Calibration and verification of analytical and microbalances

• Reference mass standards in metrology and accredited calibration laboratories

• Pharmaceutical, chemical, and academic research requiring extreme accuracy

• Quality control, validation, and regulatory compliance testing