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Photographers Formulary TF-4 small batch?

Thomas Satalino

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Nov 2, 2017
Messages
38
Location
Winston-Salem
Format
35mm
Photographers Formulary TF-4 suggests that their 1 Liter bottle makes 1 gallon of solution once diluted. If I wish to make a smaller batch, such as 1 liter total (250ml tf-4:750ml water), would I be able to save the rest (750ml) of the chemical in its original bottle for any decent expanse of time?
 
I do this all the time and it works. Just make sure you really mix up the TF4 very well before you pour off the 250mL.
 
no problem but TF5 is better...no residue
 
I have never used TF4, I use TF5 and buy the gallon concentrate which I dilute to make 1 gallon working solution at a time as I use it. Do not know of any residue with TF4, but the concentrate will separate if sitting after a while, but that is normal, just remix it then dilute it. I use the same dilution of TF5 for film and paper.
 

This is the only way I've ever used TF-4. I use all chemicals one-shot, so I pour out enough for only one or two rolls. And as brianmquinn said, shake well and immediately pour so the TF-4 won't have a chance to separate.

Mark Overton
 
TF-4 is quite alkaline, and if you use it in open trays there's a good chance of high Ammonia odor. Make sure you know what you get into before you plan on using it in open trays. T-5 is neutral and as odorless as it gets, and both concentrate and working solutions last seemingly forever.
 
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