Neg-fast Generation II Film allows users to quickly create a negative from their paper or transparent positive artwork. This is U/V sensitive and should be handled under subdued light; we recommend a yellow light of about 25 watts. For exposure, the DATAK Er2000 is recommended. For developing, use only DATAK 12-710. Use Neg-fast film negatives with ER-71 negative acting photoresist for quick and easy production of your PC boards. Complete instructions are enclosed.