QUICK INTEGRITY TEST FOR POROUS MATERIAL

PROBLEM TO BE SOLVED: To provide a method for quickly testing the integrity of a porous material.SOLUTION: This method of testing integrity includes: (a) making a porous material wet with a liquid; (b) bringing a first surface of the porous material into contact with a mixture containing a carrier and detectable substance; (c) pressurizing the first surface of the porous material so that at least a portion of the carrier and the detectable substance can be transmitted through the porous material; (d) making the carrier and the detectable substance found out in the transmitted object of the porous material re-circulate at the transmission side with a fixed volume while continuously pressurizing the first surface of the porous material as mentioned above in (c); and (e) measuring the density of the detectable substance in the transmitted object of the porous material with time.