Barcol Hardness ASTM D2583 Scope: Barcol Hardness is used to determine the hardness of both reinforced and non-reinforced rigid plastics. Test Procedure: The specimen is placed under the indentor of the Barcol hardness tester and a uniform pressure is applied to the specimen until the dial indication reaches a maximum. The depth of the penetration is converted into absolute Barcol numbers. We have barcol hardness tester in insize make. Please contact for more information.