Fritsch® Sieve Ring P-14 for Impact Bar 0.12 mm Trapezoidal Hole

- special sieve ring and can only be used in conjunction with the impact bar - sieve rings determine the final fineness of the specimen. Sieve rings with trapezoidal perforations and round perforations are available. Sieve rings with trapezoidal perforations cause additional comminution through increased shearing action. Sieve rings with round perforation are recommended for comminution of brittle materials and materials of medium fineness with narrow grain width band.