Sodium Sulfite grades?

[yvonbug]

Is Photo grade as good as reagent grade?

 

[goldsilverpro]

Photo grade what? Sodium sulfite? Whatever chemical you're talking about, photo grade is not as pure as reagent grade. However, the reagent grade probably costs 10 times more and I know of no refining processes that requires reagent grade chemicals.

 

[yvonbug]

Yes, the photo grade is 5 bucks a lb compared to 34 to 51 bucks reagent. I didn't think reagent was needed. Thanks for the quick response!

 

[goldsilverpro]

I think photo grade is a notch better than technical grade, in this case. I bought a few bags in the last year and don't think I paid close to $5/#.

 

[Geo]

have you tried the stump remover Bondie? buy it at most high end building outlet retailers. its the same as sodium metabisulfite.

 

[Claudie]

I think they changed some of that Bonide Stump Out. Read the ingredients to make sure of what it is made of.