I forgot developer mixing order...

[Ray Rogers]

What are the general rules when mixing up formulas?

I know somethings have to go in at a certain time but I forgot what goes when and the never befores.

[Photo Engineer]

Ray, use the order in the printed formula for best results. Kodak gives them in their respective addition order in all cases.

Some people prefer to put a pinch of Sulfite into the developer before adding the Metol (or HQ or both).

PE

[jgjbowen]

ingredient #1 is H2O.....after that you are on your own. Sorry Ray, I just couldn't help myself :-)

[Ray Rogers]

I want to carry a special developer into the field, in powder form;
I figure I can't get by just mixing EVERYTHING together...
but I thought some good neighbor combinations might be permissible.

IIRC, some known problems are, uh, well known.

Something affects the solubility of something else....

OK, Well - I may have to pre-pkg. ea. component seperately,
but I was looking for a get out of jail card.


Ray

Ray, use the order in the printed formula for best results. Kodak gives them in their respective addition order in all cases.

Some people prefer to put a pinch of Sulfite into the developer before adding the Metol (or HQ or both).

PE

[Ray Rogers]

ingredient #1 is H2O.....after that you are on your own. Sorry Ray, I just couldn't help myself :-)

It's OK.
At least you didn't say something like:
"7:33 is a very good time to mix YOUR developers."

[Photo Engineer]

Ray;

You didn't say what exactly you wanted to do.

Package the developing agents in one small packet and everything else in another packet. When ready to go, add the alkali and then the developer packets to very warm water, about 40 deg C. This will work with most developers.

PE

[dancqu]

I want to carry a special developer into the field,
in powder form; ... Ray

My guess, the developer will be mixed directly to
working strength. At that dilution all together may
dissolve easily enough. Test before field use. The
less to be dissolved the better your chances. Dan

[Ray Rogers]

Interesting.
Actually, I will prepare a stock, the working solution is however quite dilute... much more than a typical developer... infact, to mix working strength, I think I would need to be able to weigh out sub mg quantities...

This I cannot do.

My guess, the developer will be mixed directly to
working strength. At that dilution all together may
dissolve easily enough. Test before field use. The
less to be dissolved the better your chances. Dan