INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390942)

INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390942)

The INDIVIDUAL WEIGHT CLASS E 1 Ohaus (30390942) is a high-precision calibration weight engineered 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 weight ensures full traceability and dependable performance in critical weighing applications.

This Class E1 calibration weight is designed for laboratories that require minimal measurement uncertainty and long-term stability. Its one-piece construction provides excellent mechanical integrity, while the flat design allows secure handling and precise placement on balance pans. Made from high-quality 304 stainless steel, the weight offers superior corrosion resistance and durability. A protective storage case is included to protect the weight from contamination and physical damage during storage and transport.

Key Features

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

• Supplied with ISO/IEC 17025 accredited calibration certificate

• Extremely low uncertainty suitable for reference and primary calibration standards

• One-piece construction for enhanced stability and long-term reliability

• Flat design for safe handling and accurate positioning

• 304 stainless steel construction for corrosion resistance and durability

• Protective case included to maintain cleanliness and calibration integrity

• Manufactured in the USA for assured quality and traceability

Technical Specifications

• Weight value: 500 mg

• OIML class: E1

• Calibration certificate: ISO/IEC 17025 accredited

• Uncertainty: 0.001 mg

• Weight tolerance: 0.005 mg

• Construction: One-piece

• Design: Flat

• Material: 304 stainless steel

• Density at 20 °C: 7.95 g/cm³

• Dimensions (L × H × W): 0.45 × 0.14 × 0.49 in (1.14 × 0.358 × 1.26 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