Conventional Negative Plate Developer, 5-gallon cube: These Conventional Negative Working Plate Developers and 2in1 are designed to work either by hand or in a processor. They contain an additive called "Plate Prep" which conditions the aluminum non-image area and reduces the roll up time on press by up to 30%. These products will not foam, will not swell processor rollers, and run cleaner & longer than our competitors. Works with All Agfa Negative Conventional Plates (SI,S2, N555,WLE, SF2, etc), Anitec, Anocoil, Base-Line, Dot Works, Graphline, IBF, Kodak, Konica, #1 Network, Southern Litho and most other negative conventional printing plates.