E1 Class 20 kg Calibration Weight – Engineered for Absolute Precision

At Masseprazise, we specialise in crafting high-precision calibration weights that meet the most stringent metrological standards. Our E1 Class 20 kg Calibration Weight is meticulously engineered for applications where the highest level of accuracy and traceability is required, such as in pharmaceutical labs, R&D centres, national metrology institutes, and advanced calibration laboratories.

Made from high-grade non-magnetic austenitic stainless steel (SS-316), this 20 kg calibration weight is crafted as a single-piece monobloc (integral) knob-type bar, ensuring maximum structural integrity and long-term dimensional stability.

Key Features of 20 kg Calibration Weight:

• Type: Knob-type, monobloc (integral single-piece)
• Material: SS-316 Austenitic Non-Magnetic Stainless Steel
• Capacity: 20 Kilograms
• Density: 8000 (± 30) kg/m³
• OIML Tolerance Class: E1 / E2
• Magnetic Susceptibility (X): < 0.02
• Finish: Highly polished for reduced contamination and corrosion resistance
• Packaging: Delivered in a rugged aluminium hard case
• Certification: Accompanied by standard manufacturer certificate and traceable calibration certificate as per OIML R111-1:2004 and ISO 17025:2017

Precision Meets Compliance – OIML R111 E1 20 kg Weight

The OIML R111 E1 20 kg Weight is manufactured in strict accordance with the International Organization of Legal Metrology (OIML) recommendations, specifically the R111 standard for E1 Class weights. E1 class weights are the most precise and are primarily used to calibrate high-precision reference standards and microbalances with resolutions as fine as 0.01 mg.

At Masseprazise, each E1 class 20 kg calibration weight undergoes rigorous inspection and dimensional verification before being approved for shipment. The low magnetic susceptibility (<0.02) and high corrosion resistance of SS-316 stainless steel ensure the weight maintains its stability and accuracy even in sensitive environments.

Material Excellence – Why SS-316?

Our E1 class weights are made from non-magnetic SS-316 stainless steel, known for its:

• Superior corrosion resistance
• Low magnetic permeability
• Excellent mechanical properties

Applications of E1 Class 20 kg Calibration Weight

Whether you're working in a regulated lab environment or a national metrology institute, our 20 kg calibration weight is the perfect solution for:

• Calibration of Class I microbalances and semi-microbalances
• Verification of mass comparators
• Calibration of mass standards in E2, F1, or F2 class
• Pharmaceutical R&D, petrochemical labs, defense, and aerospace industries
• High-accuracy weighing processes where legal-for-trade verification is essential

Certified Accuracy You Can Trust

Every E1 Class 20 kg Calibration Weight from Masseprazise is supplied with:

• Standard manufacturing certificate
• A calibration certificate traceable to international standards such as OIML R 111-1:2004 and ISO 17025:2017

The calibration is performed in a controlled laboratory environment by trained metrologists using high-precision mass comparators, ensuring reliable traceability to SI units.

For Safety and Longevity

To protect your investment, each 20 kg weight is packed in a custom aluminium hard case with foam lining. This ensures:

• Safe storage and transport
• Long-term protection from corrosion, dust, and handling damage
• Easy organization for weights used in metrology kits or laboratory environments

Why Choose Masseprazise?

At Masseprazise, precision isn’t just a standard—it’s our promise. We are committed to offering calibration solutions that go beyond basic compliance, delivering products that excel in:

• Accuracy
• Reliability
• Durability
• Customization

Whether you need a single E1 weight or a complete set for your calibration lab, our expert team will help tailor the solution to your needs. We also offer options for custom engraving, special protective coating, and ISO/IEC 17025-accredited recalibration services.