The NFPA has identified the various FR hazardous risk category levels, which range from PPE 1 (which is low risk and requires AR clothing with a minimum arc rating of 4), up to PPE 4 (which is high risk and requires AR clothing with a minimum arc rating of 40). Each level, 1-4, is rated at a certain amount of flame resistance measured in cal/cm2.

EN 388 is a European Standard. Cut Level is determined by the number of cycles it takes a spinning circular blade, that is pulled across the material under a constant weight of 500 grams, to cut the fabric. As the number of cycles increase, so does the glove's ratings. Click here for more information about the EN 388 2016 standard.

EN 407 is a general European standard designed to be used for any glove that is to be sold as providing protection against thermal hazards. All six tests are graded on a scale from 0 to 4, with 0 signifying that the glove failed the test, and 4 demonstrating it has achieved the maximum resistance in that specific area.