Multigrade developer is an economical developer primarily recommended for use with Multigrade papers. Use this versatile developer to process both resin coated and fiber base enlarging papers. Multigrade developer is supplied as a liquid concentrate and is economical to use. The recommended dilution is 1 part developer mixed with 9 parts water. Mix only as much developer as is needed for that particular printing session. For Multigrade IV RC Deluxe and Multigrade III RC RAPID papers, the image appears after 10 seconds and development, at 68°F (20°C), is complete in 1 minute. This development time produces prints identical in contrast and maximum density to prints processed for two minutes in a conventional tray developer. For Multigrade FB papers, the image appears after 35 seconds with a development range of 1 – 2 – 3 minutes at 68°F (20°C). Development may be extended to 6 minutes without any noticeable change in contrast or fog. For greater development control and added economy, Multigrade developer can also be diluted at 1+14. Diluted Multigrade developer will stay in good condition in an open tray for two working days, at dilution 1+9 and for one working day, at dilution 1+14. Unopened bottles of Multigrade developer will keep approximately 24 months. Tightly capped half-full bottles will keep for up to 6 months. One liter of working strength developer will process up to 50 8×10 inch fiber base prints and 100 resin coated prints.
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