8x10 developing question tmax rs

[darrin]

Howdy! Just joined the forum...

Anyone know stuff about processing 8x10 tmax sheet using tmax rs developer?

I cannot find out how many sheets a gallon can make and how to mix the chemicals... I used to use d76..

darrin

[Sal Santamaura]

Howdy! Just joined the forum...

Anyone know stuff about processing 8x10 tmax sheet using tmax rs developer?

I cannot find out how many sheets a gallon can make and how to mix the chemicals... I used to use d76..

darrin

After combining TMAX RS parts A and B, you'll need to use at least 45 ml of concentrate for each 8x10 sheet regardless of dilution, processing method (trays, tanks, Jobo, etc.) or type of film.

[Richard M. Coda]

I use it in a Jobo. Mix A+B. Dilute 1:9 (for 100) or 1:15 (for 400) and use one shot.

In a Jobo 3005 tank I use 1000ml for 3-4 sheets.

[Don7x17]

I use it in a Jobo. Mix A+B. Dilute 1:9 (for 100) or 1:15 (for 400) and use one shot.

In a Jobo 3005 tank I use 1000ml for 3-4 sheets.

To clarify - Part B was put into the Part A container. The dilutions he mentions are this mix into water. Mixed A+B at full strength keeps at least a year (per at 1991 Sexton Anderson ranch workshop where we used a year old stock bottle left from his previous year).

I've used it extensively for TMX and TMY 8x10 -- with about 900ml total solution and dilutions -- since 1990.

Here's my tested times for 1.1 range(Silver printing). 5 sheets 8x10, approx 950ml total,20C, Jobo 3005

TMX100 - N-3 5:30 ISO 64 1:15
N-2 7:00 ISO 64 1:15
N-1 9:00 ISO 80 1:15
N 9:00 ISO 80 1:9
N+1 10:15 ISO 80 1:4
N+2 8:40 ISO 100 1:2 (lots of developer. Just makes N+2 on densitometer. total volume 600ml)

TMY400 N-2 6:30 ISO 250 1:15
N-1 10:00 ISO 250 1:15
N 8:30 ISO 320 1:9
N+1 11:00 ISO 320 1:4
N+2 14:00 ISO 400 1:2 (ditto above)
Do some of your own testing -- you may be off depending upon your processing. But the jobo isn't that variable model to model.

Note that dilution changes to gain N+1 and N+2 instead of longer (extremely) development times - avoid extreme wet times. Also it just takes so long to develop if you only use 1:9 for these

Chemisty as richard mentioned is one-shot.

These times with distilled water - when originally testing with Phoenix tap water instead of distilled, times varied depending upon the water of the day (Salt River, Colorado, or well - the dissolved Calcium, etc varied enough to make times variable. The local water district (Salt River) served up what was available from these three sources...results weren't controlable).

Times weren't that different for 4x5 or 5x7 in the 3010 tank. Nor that different for ULF films in the 3063 tank(but with 1.7 or 1.8 DR in the negative comparing 8x10 to ULF)

Use these as starting times if you aren't using Jobo, and modify the times. Get a good densitometer, a step tablet and do a little testing. (View Camera Store sells a nifty softare tool that will do all the charting for you - either for the zone system or Phil davis system).

good luck.
Don

[Richard M. Coda]

Thank you for the detailed clarification, Don!