Just got my testkit and was wondering about accuracy needed using the bottom of the label and top of the label as the guides for how much water and reagent. The reagent will be consistent due to the label heigth but it appears my label is like 1/8" inch low from making a 50/50 ratio for the test.
I havent yet went to the store to get a syringe to find off how many ml difference there is. Is it that critical for this test if the ratios of water to CYA could be off as much as 10%? I have a 100+ CYA and since I have dilution on top of the first mix I dont know if I would be signifcantly introducing a margin of error starting out.
Long story to ask how critical is a 50/50 mix for this process?