RANT ON....TEST KITS

[Daniel@R2R Verified Admin]

Is it ok if I rant a little?

How can test kits give such different results? I'm talking a 100ppm calcium difference and a 2.0 DKH difference.

I want my sps to do well but it stinks when all these test kits give such different results!!

Rant off...for now....

I think the goal is consistency. I would worry less about variation across brands as long as your results are consistent within the same kind of test. If it's inconsistency with a single test kit, I'd suggest trying a different kit as it may be a bad reagent...

Good luck!!