5% acetic acid for RA-4 stop bath?

[Stew]

Hi,

Can 5% acetic acid,(vinegar), be used for an RA-4 process stop bath? What is the dilution ratio with water?

Thanks,
Rob.

 

[Photo Engineer]

Rob use 1% or 2%, not 5%. Much better and does not affect the blix so badly.

PE

 

[Nick Zentena]

1% means 10ml in a litre. 5% is 5ml in every 100ml of vinegar. So use 200ml of vinegar with 800ml of water. Or a ratio of 1:4

 

[Boris]

I once ran out of acetic acid and used 5% vinegar diluted 1:4. Woks fine.