The Permaflow® works on a variety of different fluid types, as long as the speed of sound in the fluid is known. There is a built-in database of over 19+ fluids ranging from: water, sea water, kerosene, petrol, fuel oil, crude oil, Freon R134a, Freon R22, diesel oil, castor oil, F-76 fuel oil, Novec™ 1230, glycol/water, etc. There is an option to input custom fluid types as long as you know the speed of sound in the fluid – this can be found from online databases The Permaflow® will also work on a variety of pipe material, as long as the speed of sound in the pipe material is known. There is a built-in database of over 12+ pipe material ranging from: carbon steel, stainless steel 304, stainless steel 316, cast iron, ductile iron, copper, PVC, lead, nylon, PE, aluminium, asbestos, fibre glass, etc. There is an option to input custom pipe materials as long as you know the speed of sound in the pipe material – this can be found from online databases