Profile: Rational Intertrade offers spares parts for centrifugal machines and many other similar machines. Our continuous centrifugal screens are electroplated using a sophisticated electroforming process. This process makes possible a slot shape that is narrow at the working surface, to reduce blinding or clogging. Slot arrangements for centrifugal screens are specified in two parts: mesh no. 40/10 and 33/8. The number (before the slash) is the number of slots per inch perpendicular to the molasses flow and crystal travel. The second number (after the slash) is the number of slots per inch parallel to molasses flow and crystal travel. Nickel micro screens are made of 99.99% purity nickel having hard chromium plating of 10-12 micron on the working face. These screens are used for continuous centrifugal machines for separation of crystal.