INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390939)

INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390939)

The INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390939) is a high-precision calibration weight designed for ultra-accurate mass calibration and verification of analytical and microbalances. Manufactured to meet OIML Class E1 requirements, this weight provides excellent accuracy, stability, and traceability for critical weighing applications in laboratory and metrology environments.

This Class E1 calibration weight features a one-piece cylindrical design that ensures superior mechanical stability and long-term dimensional integrity. Constructed from Troemner Alloy 8, the weight offers uniform density, corrosion resistance, and consistent performance over time. Each unit is supplied with a protective storage case to reduce the risk of contamination and physical damage, helping maintain calibration accuracy throughout its service life.

Key Features

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

• One-piece cylindrical construction for maximum stability and durability

• Manufactured from Troemner Alloy 8 for excellent material consistency

• Very low uncertainty suitable for reference and primary standards

• Tight tolerance supporting precise analytical balance calibration

• Protective case included for safe handling and long-term storage

• Manufactured in the USA to ensure quality and full traceability

Technical Specifications

• Weight value: 5 g

• OIML class: E1

• Uncertainty: 0.003 mg

• Weight tolerance: 0.016 mg

• Construction: One-piece

• Design: Cylindrical

• Material: Troemner Alloy 8

• Density at 20 °C: 8.03 g/cm³

• Dimensions (H × Ø): 0.57 × 0.31 in (1.461 × 0.787 cm)

• Dimensions in case (H × Ø): 2.5 × 2 in (6.35 × 5.08 cm)

• Protective case: Included

• 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