Abstract: A substrate for a liquid filter, which includes a polyolefin microporous membrane, the polyolefin microporous membrane having a water permeation efficiency of 0.10 to 0.50 ml/min·cm2, the polyolefin microporous membrane having a bubble point of 0.50 MPa or more and 0.80 MPa or less.

Abstract: A substrate for a liquid filter, which includes a polyolefin microporous membrane, the polyolefin microporous membrane having a water permeation efficiency of 0.51 to 1.20 ml/min·cm2, the polyolefin microporous membrane having a bubble point of 0.45 MPa or more and 0.70 MPa or less, the polyolefin microporous membrane having a compressibility of less than 15%.

Abstract: A substrate for a liquid filter, which includes a polyolefin microporous membrane, the polyolefin microporous membrane having a water permeation efficiency of 1.21 to 2.90 ml/min·cm2, the polyolefin microporous membrane having a bubble point of 0.40 MPa to 0.65 MPa, the polyolefin microporous membrane having a compressibility of less than 15%.

Abstract: A substrate for a liquid filter, which includes a polyolefin microporous membrane, the polyolefin microporous membrane having a water permeation efficiency of 0.10 to 0.50 ml/min·cm2, the polyolefin microporous membrane having a bubble point of 0.50 MPa or more and 0.80 MPa or less.

Abstract: A substrate for a liquid filter, which includes a polyolefin microporous membrane, the polyolefin microporous membrane having a water permeation efficiency of 1.21 to 2.90 ml/min·cm2, the polyolefin microporous membrane having a bubble point of 0.40 MPa to 0.65 MPa, the polyolefin microporous membrane having a compressibility of less than 15%.

Abstract: A substrate for a liquid filter, which includes a polyolefin microporous membrane, the polyolefin microporous membrane having a water permeation efficiency of 0.51 to 1.20 ml/min·cm2, the polyolefin microporous membrane having a bubble point of 0.45 MPa or more and 0.70 MPa or less, the polyolefin microporous membrane having a compressibility of less than 15%.

Abstract: The conveyance apparatus includes: a swing arm whose distal end portion passes on a carrying-in/out position and a working position while being swung, which are provided on a circular trajectory in advance, a plurality of turn tables each of which is mounted on the corresponding distal end portion of the swing arm, the turn tables revolving along the circular trajectory and being rotatable on the axis thereof at the mounted position in the horizontal direction in a state that a workpiece is placed on the turn table, and a rotation locking mechanism that locks the rotation of the turn table on the axis except when the turn table is located at the working position.