While Acidex treatment is a last resort solution for me, it is sometimes needed. Growing red wine grapes can certainly be a challenge some years.
When I started using Acidex, the manufactures instructions were a little confusing, especially when trying to follow them on the job. It didn't help that the TA was expressed in %.
Reviewing the following information should help in following the correct workflow. And possibly reducing errors.
A good review on acit is here:
The formula below is a jpg that you can copy and print out to use and keep with your batch records.