WEIGHT SETS CLASS E 2 Ohaus (80780387)

WEIGHT SETS CLASS E 2 Ohaus (80780387)

The WEIGHT SETS CLASS E 2 Ohaus (80780387) high-precision mass calibration for laboratories that require accuracy across wide gram and milligram ranges. Therefore, this set supports demanding calibration and verification tasks for analytical balances and microbalances in regulated, research, and quality-control environments. Moreover, full compliance with OIML Class E2 ensures international traceability and consistent weighing performance. As a result, laboratories can maintain confidence in both routine checks and formal calibration workflows.

Ohaus designs this set with a total capacity of 600 g and supplies 23 precisely manufactured weights. Consequently, users can perform stepwise calibration across low to mid-capacity ranges with excellent resolution and flexibility. Additionally, each weight features a one-piece construction, which improves mass stability and minimizes long-term drift during repeated handling.

To optimize performance at every nominal value, Ohaus selects materials by weight class. 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 316 stainless steel for corrosion resistance and consistent density. Furthermore, weights below 5 mg use 3003-H14 aluminum, which provides appropriate density and easier handling at micro-mass levels. Consequently, the entire set maintains reliable performance across the full calibration spectrum. At 20°C, densities align accordingly: 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 robust case protects the weights from contamination and mechanical damage. Moreover, 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

• Broad coverage from (2) 200 g down to 1 mg in one set

• One-piece construction for improved 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

• OIML Class: E2

• Weight Set Range: (2) 200 g – 1 mg

• Total Set Capacity: 600 g

• Total Pieces: 23

• 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 × 7 in × 8 in (8.89 cm × 17.78 cm × 20.32 cm) (L × H × W)

• Country of Origin: USA

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-to-mid mass applications.