JL Portable Filter Series Technical Features: It is of 3-stage filtration, small and flexible size, easy to operate and requires no filter paper and causes no contamination to the ground. It has a wider application than ordinary filter press and has a long lifetime, being a new substitute for frame filter press. Use: To be used for precision filtration of solid impurities in engine oil, lubricant oil and insulation oil, as well as for long distance and high lift oiling.