R-0009 reagent running low - Alternative purchase

[gbrenham]

I still have about 1/2 of all my reagents in my TF-100 test kit, except for R-0009.

I see on the TFTestKits.net site that a 1oz bottle is $5.23 (R-0009 Total Alkalinity Reagent (for TF-100)) where as I found regular sulfuric acid, 0.12N in a 60ml bottle for $5.12 on Amazon (Thomas SA9555-B Sulfuric Acid, 0.12N, 60 mL Bottle: Amazon.com: Industrial & Scientific). Any reason (other than to support TFTestKits), to not buy from Amazon?

 

[Wobblerlorri]

If the bottle from Amazon is the same normality N as the reagent in your TF-100, then go for it. 0.12 N sulfuric acid is 0.12 N sulfuric acid.