Useful Hints:

1. Before applying PHOTO EMULSION to a new screen, make sure that it     has been properly DEGREASED to remove all traces of oil, dust,     fingerprints and chemicals. Rinse off DEGREASER and allow screen to     dry in a dust free area.

2. Apply sensitized PHOTO EMULSION (follow instructions on the package)     evenly to both sides of the degreased screen with a good applicator     (coating trough). Concentrate on the print area as the outer area can be     blocked at a later stage. Additional coats can be applied after the photo     emulsion is dry to build up the stencil thickness.

3. Once the PHOTO EMULSION has dried in a dust free darkroom (a room      with a yellow globe and blacked out windows will suffice) it is now ready for     exposurem under a suitable UV light source. The exposure time varies     according to the wattage of the light source, the distance from the screen     and the MESH count & colour. A Mercury Vapour lamp (750W or higher) or     Metal Halide (2000W or higher) makes an excellent light source for     problem free exposures. Once the screen is exposed - rinse out the screen     with water. Problems will occur if the screen is under-exposed or     over- exposed, so do a time-test to ascertain the best exposure time for     you light source and mesh. Tough up pinholes with suitable screen filler.

4.  The screen is now ready for SCREEN PRINTING.

5.  After you have completed the print run - remove excess ink and clean with      a suitable screen wash.

6.  To remove the PHOTO EMULSION after you have completed the print job,       use a DECOAT POWDER solution (see packet for mixing instructions).      The solution should be used on both sides of the screen and allow activity      time for the chemical to react before blasting off with a HIGH PRESSURE      WATER JET SPRAY GUN (100 bar pressure or more). Do not allow the      chemical to dry on the screen.

7.  Now apply CLEANER PASTE (a caustic based cleaner - use chemical      resistant rubber gloves) to both sides of the screen with a soft cloth. Allow      activity time before blasting off with a high pressure spray gun. Do not      allow the chemical to dry on the screen.

8.  To remove the stain (or ghost image) from the screen, apply K4 Image       Remover to both sides of the screen. Allow activity time before blasting off       with a high pressure spray gun. Do not allow the chemical to dry on the       screen.

9.  Rinse off all traces of the chemicals and store for the next print job.

10. Before applying PHOTO EMULSION to a reclaimed screen, degrease       the MESH and continue with steps 1-3.