INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390950)

INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390950)

The INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390950) is a precision calibration weight designed for ultra-high accuracy mass calibration and verification. Manufactured to OIML E1 standards and supplied with an ISO/IEC 17025 accredited calibration certificate, this weight is suitable for use with analytical and microbalances where the smallest measurement uncertainty is critical.

This E1 class weight is engineered for applications requiring the highest level of mass accuracy. Its one-piece aluminum construction ensures excellent stability and uniform density, while the flat design allows safe and controlled handling during calibration procedures. Each weight is supplied with a protective case to prevent contamination and mechanical damage, preserving long-term accuracy and traceability.

Key Features

• OIML E1 classification for ultra-high precision calibration

• Supplied with ISO/IEC 17025 accredited calibration certificate

• Very low measurement uncertainty for critical mass verification

• One-piece construction for improved stability and durability

• Flat design for easy handling and placement on balance pans

• High-quality aluminum material with consistent density

• Protective storage case included to maintain cleanliness and accuracy

• Manufactured in the USA for assured quality and traceability

Technical Specifications

• Weight value: 1 mg

• OIML class: E1

• Calibration certificate: ISO/IEC 17025 accredited

• Uncertainty: 0.001 mg

• Weight tolerance: 0.003 mg

• Construction: One-piece

• Design: Flat

• Material: Aluminum (3003-H14 aluminum)

• Density at 20 °C: 2.70 g/cm³

• Dimensions (L × H × W): 0.14 × 0.06 × 0.16 in (0.37 × 0.152 × 0.41 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

• Quality control and research applications requiring extreme accuracy

• Pharmaceutical, chemical, and academic laboratories