WEIGHT SETS CLASS E 2 Ohaus (80780382)

WEIGHT SETS CLASS E 2 Ohaus (80780382)

The WEIGHT SETS CLASS E 2 Ohaus (80780382) high-precision mass calibration for laboratories that demand strict traceability across a wide weighing spectrum. Therefore, this set supports critical calibration tasks for analytical balances and microbalances used in regulated, research, and quality-control environments. Moreover, Ohaus supplies the set with an ISO/IEC 17025 accredited calibration certificate, which streamlines compliance with audits and international standards. As a result, laboratories can document accuracy confidently without additional certification steps.

Ohaus designs this set with a total capacity of 11.11 g and includes 16 precisely manufactured weights. Consequently, technicians can perform stepwise verification and fine-resolution calibration with excellent control. Additionally, each weight uses a one-piece construction to enhance mass stability and reduce long-term drift during repeated handling.

To optimize performance at each mass level, Ohaus selects materials based on nominal weight. Specifically, weights of 1 g and above use Troemner Alloy 8 to deliver superior stability and durability. Meanwhile, weights from 5 mg to 500 mg use high-grade 316 stainless steel for corrosion resistance and consistent density. Furthermore, weights below 5 mg use 3003-H14 aluminum to achieve appropriate density and easier handling at micro-mass levels. Because of this, the set maintains reliable performance across the entire range. At 20°C, densities align with each material class: 8.03 g/cm³ for ≥1 g, 7.95 g/cm³ for 5 mg–500 mg, and 2.70 g/cm³ for <5 mg.

Ohaus includes a protective case to preserve accuracy during storage and transport. In addition, the compact case protects the weights from contamination and mechanical damage. Furthermore, the organized interior layout enables efficient access and proper placement after use. For this reason, the set suits both routine calibration and long-term laboratory storage.

Features

• Meets OIML Class E2 requirements for high-precision calibration

• Supplied with ISO/IEC 17025 accredited calibration certificate

• Wide calibration range from 5 g to 1 mg in a single set

• One-piece construction for enhanced mass stability

• Optimized materials by weight value for durability and consistency

• Protective case included for safe handling and storage

• Manufactured in the USA under controlled quality standards

Specifications

• Calibration Certificate: ISO/IEC 17025 Accredited

• OIML Class: E2

• Weight Set Range: 5 g – 1 mg

• Total Set Capacity: 11.11 g

• Total Pieces: 16

• Construction: One-piece

• Weight Material:

  • ≥1 g: Troemner Alloy 8

  • 5 mg to 500 mg: 316 Stainless Steel

  • Below 5 mg: Aluminum (3003-H14)

• Density at 20°C:

  • ≥1 g: 8.03 g/cm³

  • 5 mg to 500 mg: 7.95 g/cm³

  • Below 5 mg: 2.70 g/cm³

• Dimensions in Case: 4.5 in x 3.5 in (11.43 cm x 8.89 cm) (H x Ø)

• Country of Origin: USA

Set Contents
1 mg; (2) 2 mg; 5 mg; (2) 20 mg; 50 mg; 100 mg; (2) 200 mg; 500 mg; 1 g; (2) 2 g; 5 g; 10 mg

Applications
Laboratories use this E2 calibration weight set to verify and calibrate analytical balances and microbalances with high resolution. Moreover, pharmaceutical laboratories, calibration service providers, quality-control facilities, and research institutions rely on this set to maintain traceable and repeatable weighing accuracy. As a result, organizations can ensure consistent measurement performance across low-to-gram mass applications.