I know we have all grown to love the Hannah all checker here. Has anyone else ever purchased the certified hannah ALK test check kit? I was questioning my #’s between my trident and the hannah and they seemed to be quite a bit off so i figured WTH i’ll order and see what the accuracy is. So the instructions say that the test sample is 100 ppm and that test should be between 90 and 110 with the +\-5% noted accuracy. I have always assumed 10% +\- because they are hobby grade. So when I just tested btw the test bottles have been in the living room so they should be somewhere between the recommended 25C temp. This fam thing is testing an additional 10% lower than it the instructions note. Tell my your experience if you have purchased this accuracy testing kit HI755-11 for alk tester.#hannainstamentsstruggle