Registered in England No. 1725990 Positive Offset Litho Plates (Analogue): Guardian: Positive Aluminium Pre-Sensitised Plate. Exposure: Sensitive on Blue and Near-Violet. Exposure Time: 21-42 seconds on distance of 1.2m from 5000w light source. Std Exposure: 3 Open @ 300m Js Processing: Paramount Developer. Temperature: 24oC +/- or 75oF +/- Baking: Can extend the run length 3-4 times that of a normal run length, by baking at 230-250oC (446-482oF) for approximately 5-8 minutes. When the plate changes colour from Green to Brownish Red, develope the plate again, it's now ready for printing after wash and dry. Thickness: 0.15 - 0.30mm Run Length: 50 - 120K Lighting: Yellow Light (avoid direct sunlight). Storage: Room temperature; Avoid humidity and temperature variations, 18 months max. Image: Visible after exposure and after developing. Sizes: Available in all sizes up to 1.27m wide. 50 sheets per pack for 0.30mm, 100 sheets per pack for 0.15mm.     Actual run length may vary. Specification subject to change without notice. © Pomeroy Pressroom Products Ltd 2010 Website design by: AH Designs Plate Chemistry for Litho Plates