WEIGHT SETS CLASS E 1 Ohaus (30390926)

WEIGHT SETS CLASS E 1 Ohaus (30390926)

The WEIGHT SETS CLASS E 1 Ohaus (30390926) is a high-precision calibration weight set designed for ultra-accurate mass calibration and verification of analytical and microbalances. Manufactured in accordance with OIML Class E1 standards and supplied with an ISO/IEC 17025 accredited calibration certificate, this set provides full traceability and exceptional reliability for critical laboratory and metrology applications.

This E1 class weight set covers a fine mass range from 1 mg to 500 mg, making it ideal for highly sensitive balance calibration. Each weight is manufactured with one-piece construction to ensure excellent stability and long-term accuracy. The set combines stainless steel and aluminum materials, optimized according to weight value, to achieve consistent density and performance. All weights are supplied in a protective storage case to prevent contamination and mechanical damage during handling and storage.

Key Features

• OIML Class E1 classification for ultra-high accuracy calibration

• Supplied with ISO/IEC 17025 accredited calibration certificate

• Wide micro-mass range suitable for analytical and microbalance calibration

• One-piece construction for superior stability and durability

• Optimized material selection for consistent density and performance

• Protective case included for safe storage and handling

• Manufactured in the USA for assured quality and traceability

Technical Specifications

• Weight set range: 1 mg to 500 mg

• Total set capacity: 1.11 g

• Number of pieces: 12

• OIML class: E1

• Calibration certificate: ISO/IEC 17025 accredited

• Construction: One-piece

• Density at 20 °C:

  • Below 5 mg: 2.70 g/cm³

  • 5 mg to 500 mg: 7.95 g/cm³

• Weight material:

  • 5 mg to 500 mg: 316 stainless steel

  • Below 5 mg: 3003-H14 aluminum

• 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

• Protective case: Included

• Case dimensions (H × Ø): 4.5 × 3.5 in (11.43 × 8.89 cm)

• Country of origin: USA

Applications

• Calibration and verification of analytical and microbalances

• Reference mass standards in metrology and calibration laboratories

• Pharmaceutical, chemical, and academic research requiring extreme accuracy

• Quality control and regulatory compliance testing