Archived posting to the Leica Users Group, 2003/09/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I would add, that the bigger Jobos are selling second hand at very reasonable prices. I have an old ATL 3 and for me its perfect. Does the lot, once I press the buttons: all I need to do is make sure the chemistry containers are full ;-) On Thursday, Sep 11, 2003, at 07:16 Australia/Melbourne, Roy Zartarian wrote: > The Jobo will indeed bring the solutions up to temperature, but I > don't think the analog control on the CPE2 is all that precise. So I > verify the solution temperatures separately just for my own peace of > mind. I switched to a mercury thermometer after I discovered that the > alcohol fill thermometer I had been using was reading several degrees > lower than the actual temperature with the result that black and white > film came out reticulated due to the colder wash water and slide film > had a strong magenta cast. I also use the mercury thermometer as a > check against the dial thermometer on the faucet I use for wash water. > > As for getting the solutions up to temperature quickly, I fill the > Jobo trough with water at about 95 degrees Fahrenheit, then let the > processor bring both the water bath and the chemistry up to 100 > degrees. The material of which the Jobo bottles are made does a good > job of conducting heat. > > Roy > > On Wednesday, September 10, 2003, at 04:13 PM, Richard F. Man wrote: > >> Thanks all for the answers! I think I will do it, after discussing it >> w/ the AFO (Assistant Financial Officer, I do all the finance stuff, >> she signs the checks so to speak :-) ) later. >> >> One final question - "..good mercury thermometer to verify solution >> temperatures..." I thought the Jobo will take care of the water >> temperature, but I guess the solution temperature is important too? >> What is the process of getting the right solution temperature? Zip >> water in microwave, check w/ thermometer and adjust? >> >> At 01:20 PM 9/10/2003 -0400, Roy Zartarian wrote: >>> That's pretty much the process in a nutshell except that you have to >>> pour and drain each step of the chemistry at the proper time, a task >>> facilitated by the use of the correct Lift for the processor. Other >>> items you might consider acquiring are a good mercury thermometer (I >>> got mine from Edmund Scientific) to verify solution temperatures, >>> appropriately graduated measuring cylinders (same source) if you >>> decide to mix small batches of chemistry from a 5 liter 6-step kit, >>> and a tupperware or Rubbermaid container to hold the stabilizer or >>> final rinse since that stuff shouldn't be used on plastic reels. >>> >>> ... >> >> // richard <http://www.imagecraft.com> >> <http://www.dragonsgate.net/mailman/listinfo> >> -- >> To unsubscribe, see >> http://mejac.palo-alto.ca.us/leica-users/unsub.html >> > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > Alastair - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html