OIML M1 Stainless Steel Test Weights – 1 g to 2 kg

These high-quality OIML M1 stainless steel test weights are sold individually in impact-resistant plastic cases, perfect for accurate calibration of precision balances. Available in 1 g, 2 g, 20 g, 50 g, 100 g, 200 g, 500 g, 1 kg, and 2 kg, each weight meets M1 class tolerances—ensuring reliable performance for laboratory, industrial, and educational needs.

Key Features

• OIML M1 Accuracy: Manufactured to strict international tolerances for dependable calibration
• Stainless Steel Construction: Polished and corrosion-resistant for long-term use 
• Impact-Resistant Plastic Case: Individual packaging protects weights and makes them highly portable
• Compact & Clean Design: Flat faces with clear markings for accurate placement and identification
• Calibration Certificates: Available with UKAS or traceable calibration certificates

Technical Details & Usage Notes

• Material: Stainless steel, density ~7.9 g/cm³ 
• Standards: OIML M1 compliant for precision calibration
• Individual Packaging: Each weight comes with its own reusable plastic storage case
• Origin: Engineered by Adam Equipment in the UK with high-quality craftsmanship

Ideal Applications

• Calibrating analytical, precision, and bench scales
• Replacing or supplementing individual calibration weights
• Educational labs, quality control workflows, and industrial verification
• Portable testing with secure casing and transport readiness