Integrity a4 cleanroom technical paper integrity 607 0003 integrity yellow cleanroom technical paper is iso 5 cleanroom processed and has low chloride and other ionic contamination it is formulated without magnesium silicate and has excellent resistance to ipa the paper is compatible with most writing inks without smearing and is available in a range of colours integrity 607 0003 a4 technical paper yellow a4 yellow 250 sheets per pack