I work as an amino acid lab technician in a production facility, and we've been tasked with figuring out how to determine the amount of sulfuric acid remaining in a solution made in our plant. Ideally, the amount would be zero, or almost zero. We already have a sulfate test we use for a fertilizer product we produce, and someone suggested using that test. It's a Hach spectrophotometer test kit.
My question is, if we use that test kit to determine total sulfates in the sample, is there a conversion factor to determine sulfuric acid, or is it more of a 1:1 result? I realize total sulfates won't necessarily all be from sulfuric acid. Without divulging too much info, the solution is a reaction with soybean meal and sulfuric. Ideally, the sulfuric is completely used up, but production is wanting to have a test available to confirm this.
I hope I've given enough info. Thanks in advance for any and all help.