Weights Lab & Test Weights Range

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OIML Weight Classes Explained

We offer test weights across all major OIML classes, ranging from ultra-precise laboratory standards to robust industrial weights. Here’s a quick guide:

High Precision Weights – E1 & E2

Used for calibrating microbalances and analytical balances where even the slightest deviation matters.

• Applications: Metrology labs, pharma research, and scientific analysis.
  
• Features: Minimal tolerances, non-magnetic materials, calibration certificate required.
  

Laboratory & Trade Weights –F1 & F2

Ideal for high-accuracy balances in laboratories and quality control environments.

• Applications: QC labs, university research, legal-for-trade weighing.
  
• Features: Balanced accuracy and affordability, suitable for Class I and II instruments.
  

Industrial & Commercial Weights – M1, M2, M3

Built for routine industrial weighing and trade environments with less stringent accuracy requirements.

• Applications: Warehousing, manufacturing, food processing, general commerce.
  
• Features: Durable, easy to handle, suitable for Class III and IIII devices.

Choose the Right Weight Class

The accuracy class you choose should exceed the readability of your scale, ideally by a factor of three. Our experts can guide you in selecting the right test weights based on your weighing instruments and compliance needs.

Our Weights Lab: SANAS-Accredited Calibration Services

Since 2021, Clover Scales has operated a SANAS 17025 accredited laboratory dedicated to mass piece calibration. We provide:

• Calibration certificates for legal and industrial use
  
• Traceable verification for regulatory and audit requirements
  
• Proper handling advice to preserve test weight integrity over time
  

All calibrations are performed in controlled environments using certified reference standards and handled by experienced technicians.

Our Test Weight Range

We supply a full spectrum of individual weights and complete weight sets in stainless steel, cast iron, and other OIML-compliant materials. Following Richer Scale’s trusted specifications, our range includes:

• E1 to M3 weight classes
  
• Weights from 1 mg up to 50 kg
  
• Cylindrical and block formats
  
• Protective cases and handling tools
  

Custom orders are available upon request, and we can assist with product selection and certification.