Test Weights For Calibration Collection

Our collection of test weights for calibration ranges from M1 to E1 accuracy classes, tailored for routine industrial verification, high-accuracy lab calibrations, and preventing errors in advanced calculations. All of our test weights are designed to comply with the OIML R111 standard and are available with calibration certificates.

E1 Test Weights

Our E1 test weight collection features the highest precision for critical laboratory workflow as well as full certification for traceable audits.

• Single Wright OIML E1 Certified Test Weight - Ideal for ultra-precise analytical and microbalances with an accuracy of 1 g ±0.01 mg. Available from 1g to 50kg and made from polished stainless steel.
• Set of Weights OIML E1 (303-304) - Calibrate multiple scales at once with our set of test weights, perfect for busy environments with multiple scales.

E2 Test Weights

For less demanding calibration that is still OIML-R111 certified for confidence in performance, choose from our cost-effective E2 test weight range.

• Single Weight OIML E2 Certified (316) - When an E1 would be too much, choose this test weight for mid-range precision, perfect for a secondary calibration.
• Set of Weights Certified OIML E2 (313-314) - A balanced set of weights perfect for a lab or production setting, needs accuracy at an affordable price point.

F1 Test Weights

Our F1 test weights are the perfect precision instrument in a lab or industrial setting, made from durable stainless steel and a protective case for transport. These weights are certified and ready for regulatory compliance.

• F1 Precision Class Stainless Steel Single Weight - With a tolerance for 0.0001g-level scales (class II instruments), these test weights are reliable for precise laboratory work.
• F1 Class Stainless Steel Certified Weight Sets with Aluminium Case - Benefit from the same accuracy but tailored for an ISO-regulated environment that requires secure storage and transport.

M1 Test Weights

For legal and professional acceptance, explore our reliable, cost-effective M1 test weight for calibration. Made from sturdy material for industrial environments, our M1 test weights are your perfect companion.

• M1 Precision Class Single Weight in Stainless Steel - For coarse-resolution scales (0.1-1g), choose these certified weights available in 1kg-20kg.
• M1 Certified Cast-Iron OIML Weights - Available from 5-50kg, these durable test weights are best for heavier scales (class III instruments up to 10,000e).
• M1 Certified Stainless Steel with Aluminium Case - Get our full set available in stainless steel, fine-tuned for industrial calibration.

Why Choose Gravitation For Your Test Weights

With 40 years of experience in test weights, Gravitation is an NSAI & Legal Metrology authorised company, meaning our instruments are verified and legal for trading across Ireland:

• Highly accurate certifications - All of our test weights for scales meet OIML R111 and include DAkkS/Accredia certificates.
• Wide range with flexibility - Choose from a range of test weights designed for different class scales, with the option of using individually or in a set.
• Trusted supplier - ISO-certified, 5-star Google rating, trusted by reputable brands.
• Convenient Shipping - Fast, tracked delivery with pick-up available.
• Excellent Support - A 24/7, 365 days of the year support service, meaning you can access support for your test weight and scales whenever.

Contact us today with any questions or queries.