WEIGHT SETS CLASS E 2 Ohaus (80780383)

WEIGHT SETS CLASS E 2 Ohaus (80780383)

The WEIGHT SETS CLASS E 2 Ohaus (80780383) high-precision mass calibration for laboratories that require accuracy across both gram and milligram levels. Therefore, this weight set supports critical calibration and verification tasks for analytical balances and microbalances used in regulated, research, and quality-control environments. Moreover, the set complies fully with OIML Class E2 requirements, ensuring international traceability and consistent measurement performance.

Ohaus designs this set with a total capacity of 211.11 g and includes 20 precisely manufactured individual weights. As a result, laboratories can perform wide-range, stepwise calibration with fine resolution and reliable repeatability. Additionally, each weight features a one-piece construction, which enhances mass stability and minimizes long-term drift during repeated use.

To ensure optimal performance across different weight values, Ohaus selects materials according to nominal mass. Specifically, weights of 1 g and above use Troemner Alloy 8 to deliver superior dimensional stability and durability. Meanwhile, weights from 5 mg to 500 mg use high-grade 316 stainless steel to provide corrosion resistance and consistent density. Furthermore, weights below 5 mg use 3003-H14 aluminum to achieve suitable density and easier handling at micro-mass levels. Consequently, the entire set maintains reliable performance across the full calibration 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 supplies this E2 weight set with a protective case to preserve accuracy during storage and transport. In addition, the robust case shields the weights from contamination and mechanical damage. Furthermore, the organized internal layout allows technicians to access, return, and store each weight efficiently. For this reason, the set remains suitable for both routine laboratory calibration and long-term storage.

Features

• Meets OIML Class E2 requirements for high-precision, wide-range calibration

• Covers an extensive range from 50 g to 1 mg in one set

• One-piece construction for improved mass stability

• Uses optimized materials for each weight value to ensure consistency and durability

• Protective case included for safe handling and storage

• Manufactured in the USA under controlled quality standards

Specifications

• OIML Class: E2

• Weight Set Range: 50 g – 1 mg

• Total Set Capacity: 211.11 g

• Total Pieces: 20

• 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: 3.5 in x 7 in x 8 in (8.89 cm x 17.78 cm x 20.32 cm) (L x H x W)

• 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 g; (2) 20 g; 50 g

Applications
Laboratories use this E2 calibration weight set to verify and calibrate analytical balances and microbalances across a wide weighing range. 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 critical low- and mid-mass applications.