Kodak indicator stop bath.

[mporter012]

Kodak indicator stop bath dilution is 63:1. I want to make a gallon at 3800mL per gallon. 3800/64=59.375mL stop bath to 3740.625mL water.
There's got to be an easier equation!! I guess it doesn't have to be a full gallon, I just happen to have gallon containers. Even a liter is an impossible measurement. Blerg.

 

[Tom1956]

Now the dilution is 64 to 1. Problem solved.

 

[Erik L]

Just measure 2 ounces of the stop bath concentrare and pour it in a gallon jug and then fill up the jug with water. Itll be fine

 

[SMBooth]

Mine said 16ml per litre.

 

[Dr Croubie]

Just make up six lots of 640ml:
630ml * 6 = 3780ml water
10ml * 6 = 60ml stop
640ml * 6 = 3840ml stop bath
If your 3800ml bottle can't take an extra 40ml, I'm sure noone'll notice...

 

[David Brown]

Just measure 2 ounces of the stop bath concentrare and pour it in a gallon jug and then fill up the jug with water. Itll be fine

The (USA) formula for Indicator stop bath has been 2 oz. to a gallon for, I don't know, forever. (which just happens to be 1:63) How hard is that?

Plus, it's stop bath. Absolute precision is not critical.

 

[GarageBoy]

I mix mine up as I go along and I've always hated the 5ml/315ml routine
How long does mixed stop bath last?

 

[Newt_on_Swings]

I use half gallon jugs frequently especially when printing 11x14 or smaller and it's just 1oz per half gallon. Very simple and quick to make.

 

[Rick A]

For Kodak products, always remember that the ratio equation is really a plus(+) sign. 63:1 is really 63+1, so just place 2 fluid ounces stop and add 126 ounces water to make a gallon. Crikey, just dump two oz stop into a gallon jug of distilled water, close enough.

 

[MattKing]

I mix mine up as I go along and I've always hated the 5ml/315ml routine
How long does mixed stop bath last?

I mix up a stock solution - 1 + 7. It keeps a long, long time, and a quart/litre of the stock goes a long way. In addition, the stock smells a lot better than the concentrate, and it is much less likely to stain or damage anything if you spill any.

Then before use, I dilute that stock a further 1 + 7 for full strength, or 1 + 15 for half strength (which I use regularly for film or RC prints).

 

[Mark_S]

I think that it tastes better at 50ml per gallon.