Specification Brand : Huanyu BulletPoint1 : 【Range:】1mg-200g,23 pcs/set(1mg 2mg 2mg 5mg 10mg 20mg 20mg 50mg 100mg200mg 200mg 500mg 1g 2g 2g 5g 10g 20g 20g 50g 100g 200g 200g ) BulletPoint2 : 【Precision: 】E2 class, suitable for calibrating 0.00001g-0.001g electronic balance BulletPoint3 : 【Material:】316 stainless steel----Magnetic susceptibility: ≤0.005----Density: 7.94g / cm³ BulletPoint4 : 【Note 1:】 Before using the weight, use a special cleaning brush and cloth to clean the dirt and other stains on the surface of the weight. BulletPoint5 : 【Note 2:】Do not touch the weight directly by hand. When using weights, please wear special gloves and use special tools to grip the weights. Color : Silver ExternallyAssignedProductIdentifier : 6023165365597 ItemName : Huanyu Precision Calibration Weight Set 1mg-200g Class E2 316 Stainless Steel 23pcs ItemPackageDimensions_Height : 22.1 centimeters ItemPackageDimensions_Length : 10.4 centimeters ItemPackageDimensions_Width : 19.4 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : calibration-weights Manufacturer : Huanyu Material : Stainless Steel NumberOfItems : 1 PartNumber : L-686 ProductDescription : Production Description Calibration weights are used to measure the weight or mass of an object using a balance or scale, or to calibrate other weights or instruments. Calibration weights can be certified or uncertified. Certified weights meet strict guidelines for accuracy and can usually be recertified. Certified weights are used in labs where a high degree of accuracy and repeatability is required. Uncertified weights are used where a lower degree of accuracy is required, including student laboratories, rough weighting operations, and measuring force. Hooked and slotted weights are often used to measure pressure, torque, and tensile strength, and to demonstrate basic laws of physics. Calibration weights differ from lab weights, which are general purpose weights used to hold an object in place, similar to a paperweight.