Archived posting to the Leica Users Group, 2001/12/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I agree with Jim. The five minute preheat of the tank should be dry (internally). I have been using 100 F chemicals with the tank in a water bath at 104 F on the basis that if I'm standing there inverting a tank manually, I'd like to keep the times reasonably short. I had been using the Tetenal C41 Monopack, which has just been discontinued. The instructions called for tank inversion every three seconds. I questioned Ken Owens of JOBO about this, and he didn't think it was significant; thought that it was just picked to simulate the behavior of rotary processors. The 5 liter kit has instructions that call for this three second agitation. However, the last time I looked (at Keeble and Shuchat), there was a new 2.5 liter kit. The chemical content was identical to that of the 5 liter kit, just half the size. But the instructions called for a different agitation time; I don't remember exactly but it was something like two or three seconds once every fifteen. So, clearly, the agitation isn't critical so long as it is sufficient. - -- Herbert Kanner kanner@acm.org 650-326-8204 - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html