my calcium test reads in mg /litre

[asherah]

So what the heck does that come out to in ppm? what is it supposed to me?
Man this is the first time i've used this test. It's the calcium test from seachem.
I've also learned that I enjoy doing the tests ...I always did like science lol

anyway I'm guessing that 500mg/litre is low since it took the whole dang 1ml dropper to turn blue ! lol
asherah