Testex Tape accurately reproduces the profile of the blasted surface which can be read by the Testex Gauge. Achieving the correct profile during the blasting process is critical to ensure that the coating system to be applied performs correctly. The Testex Tape is fitted with a protective paper which needs to be removed before the tape is adhered to the blasted surface and pressure applied. When removed the tape features the profile of the blasted surface which can be read by the gauge and the average maximum peak to valley height calculated. The gauge first needs to be zeroed to 50 microns to take into account the backing on the tape, then the tape is placed in the gauge and the movable anvil adjusted onto the film – the reading is then ready to be taken. Locations which are not easily accessible to other devices such as inside pipes and grooves can easily be measured using the testex tape method.
Complies with International Standards: ISO DIS 8503-3, BS 7079-C5, ASTM D 4417-C, NACE RP 0287-95.