looking for a good Calc test kit

[total]

Does anyone know of a good calcium test kit. The one I've been using is a pain in my @#!.
I have to add anywhere from 20 to 30 drops of this reagent until the sample water turns from purple to true blue. The problem is the true blue part. It never reaches true blue. It dose turn blue about 25 drops in but its not a true blue. I'm looking for a kit that will with no question tell me what my calc level is at. I find I use this test more the any others. Thanks
TTFN

 

[slk3599]

I personally think the best calcium and alk tests are made by Salifert. Easiest to read. You can get them on line. If you need to find a place, email me and I will give you some links. Email is:
redfishbluefish03@earthlink.net