Such films produced by our company are based on refined prescriptions which are confirmed by the Provincial Science and Technology Committee and approved by the users. These films are featured by smooth surfaces, light and thin in quality; high porosity rate; uniform pinhole structure resultion in fast flow rate: and repulsive to adsorption. These advantages make it especially suitable for use in pharmaceutical factories, hospitals and growth period material reagent users for fluid purifying and bacteria screening purposes. Generally, a film of over 0.65 can screen off particles and bacteria with a size under 0.45.

Application method and matters needing attention£º
£¨1£©Evenly puts the filter diaphragm in the clean vessel, soaks in thefilter with 70 ¡æ distilled water which several minutes puts in issuitable then to use.
£¨2£©This film is suitable for fluids with pH values 2-9, and not suitable for strong acidic and alkali solutions, alcohol and organic solutions.
£¨3£©This film can be subject to a temperature up to 120¡æ, and a pressure of 3-4kg/cm2.
£¨4£©Pinhole screening films are only used for final screening with high precision. Normally, the fluid should go through the sand bars or screening papers for primary filtration to prevent the blocking of the film.

¡ô Common Specification£¨mm£©
§¶25£»§¶35£»§¶50£»§¶60£»§¶100£»§¶150£»§¶200£»§¶300£»§¶400
¡ô Hole size£¨um£©£º0.2 ; 0.3; 0.45; 0.65; 0.8; 1.2