Glad you posted that, I'd copied that info, but didn't note who, or what thread. I even thought that it was you, but wasn't 100%, and hated to quote without the other info.
Yep! It was me most likely. I remember posting it on some thread awhile ago, when someone else wanted to try finding the materials for it locally.
You do also
need a little bit of distilled water to do the test. I'd forgotten that, but just found the instructions I'd copied from a Sticky on the DIY board. They seemed to be easier than several others I'd read about. They're below in case anyone else wants to do a test with local materials:
Steps:
1. Pour some distilled water in the cylinder, swirl it, dump it out. (Can be graduated cylinder, test tube w/markings, beaker, etc.)
2. Repeat step 1.
3. Repeat step 1.
4. Dry cylinder with a sliver of paper towel.
5. Put 1mL of eLiquid in the cylinder
6. Add 2 drops of bromo blue
7. Fill cylinder to the 3mL mark with distilled water
8. Swirl to mix
9. Add a drop of the acid
10. Swirl to mix
11. If the color of the solution didn't turn pale yellow, repeat steps 8-9
12. Measure the final volume
13. Subtract 3 from the number you read in step 12
14. Multiply the result of step 13 by 19.4712
15. The resulting number is the mg/mL