I have been testing with the TF-100 test kit all summer. I ran out of the red ph drops that came with the kit (R-0014) and ordered new drops that I thought were the same. The new drops are R-0004- to be used with the with 2000 Series(per label). The reading I got with the new drops was a ph that was in the hot pink red color and I know my level was about 7.4-as I just lowered my ph yesterday and tested this morning with old drops. Any dilution of the water trick I can do so I can use new drops?