The F22.50 uses adjustable energy levels to allow the full range of test settings. This product is a Complete Impact Test Apparatus and conducts impact testing in accordance with IEC, UL, CSA and other international standards. Included standards are IEC601, UL2601, CSA601, IEC1010, UL3101, UL3111, CSA1010 and IEC335. The F22.50 is built and calibrated in strict accordance with IEC817 and models are available with fixed force settings of 0.20. 0.35, 0.50, 0.70 and 1.0J. Important: IEC601, IEC1010 and IEC335 require the 0.50J model.