Manufactured to the highest standards, our test weights are the perfect tool for calibrating scales to ensure you’re obtaining the most accurate reading. Our test weights are perfect for use on a worktop, lab bench or anything surface; regardless of the space available. We give you the control with the option of buying our test weights individually or as a set; meaning that no project big or small will be impacted. 

At Gravitation, we carry a varying range of test weights that differ in weight and shape, meaning catering to all your weighing needs should be a simple task. If you need additional help choosing you can contact us and one of our advisors can guide you through your selection process. 

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 laboratory 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 workflows, as well as full certification for traceable audits.

• Single Weight OIML E1 Certified Test Weight
  Ideal for ultra-precise analytical and microbalances with an accuracy of 1 g ±0.01 mg. Available from 1 g to 50 kg 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 more than required, choose this test weight for mid-range precision, perfect for secondary calibration.
• Set of Weights Certified OIML E2 (313-314)
  A balanced set of weights perfect for laboratory or production environments that require accuracy at an affordable price.

F1 Test Weights

Our F1 test weights are ideal precision instruments for laboratory and industrial settings. Manufactured from durable stainless steel and supplied in protective cases for transport, these weights are certified and ready for regulatory compliance.

• F1 Precision Class Stainless Steel Single Weight
  Designed for 0.0001 g-level scales (Class II instruments), these certified weights provide reliable laboratory precision.
• F1 Class Stainless Steel Certified Weight Sets with Aluminium Case
  Offers the same high level of accuracy in a complete set, ideal for ISO-regulated environments requiring secure storage and transport.

M1 Test Weights

For legal and professional acceptance, explore our reliable and cost-effective M1 test weights for calibration. Built from durable materials for industrial environments, these weights are an excellent choice for everyday calibration tasks.

• M1 Precision Class Single Weight in Stainless Steel
  Designed for coarse-resolution scales (0.1–1 g), these certified weights are available from 1 kg to 20 kg.
• M1 Certified Cast-Iron OIML Weights
  Available from 5 kg to 50 kg, these durable cast-iron weights are ideal for heavier Class III instruments up to 10,000e.
• M1 Certified Stainless Steel Weight Set with Aluminium Case
  A complete stainless steel calibration set supplied in an aluminium case, ideal for industrial calibration applications.

Why Choose Gravitation For Your Test Weights

With over 40 years of experience, Gravitation is an NSAI & Legal Metrology Authorised company. Our instruments are verified and approved for legal trade across Ireland.

• Highly Accurate Certifications
  All of our test weights comply with OIML R111 and include DAkkS/Accredia calibration certificates.
• Wide Range with Flexibility
  Choose from individual weights or complete sets designed for different accuracy classes and applications.
• Trusted Supplier
  ISO-certified with a 5-star Google rating and trusted by leading brands across Ireland.
• Convenient Shipping
  Fast, tracked delivery with collection options available.
• Excellent Support
  24/7, 365-day customer support whenever you need assistance with your scales or test weights.

Contact us today with any questions or queries.