Bisulfate or Sulfuric for Bichromate Bleach?

[dancqu]

Is there any reason to use the one over the other? I'm considering
the Liam Lawless method for makeing enlarged negatives. I think
his process may be the salvation of some thin low contrast
negatives I've waiting.

Patrick Dignan indicates either will work and I see bichromate
formulas which do use the bisulfate. Dan

 

[donbga]

Is there any reason to use the one over the other? I'm considering
the Liam Lawless method for makeing enlarged negatives. I think
his process may be the salvation of some thin low contrast
negatives I've waiting.

Patrick Dignan indicates either will work and I see bichromate
formulas which do use the bisulfate. Dan

Even though I use Sulfuric I do think bisulfate will work also.

Perhaps others have experience with bisulfate.

Good luck,

Don Bryant

 

[andrewfrith]

i've only used sulfuric and it seems to work well...i had trouble locating sulfuric but in the end got it from a car battery shop, battery acid i believe is a concentration of around 35%.