I just bought some refills of the I772-26 reagent for my Hannah Alk checker. With my old batch the reading was at 8.5 and with the new batches its coming in at 7.5. I bought one batch from BRS with lot 0272 and two from Amazon with lot 0233. All three new batches report around 7.5. This would normally make me think that my old batch was the one that was off but I also tested with my Red Sea kit and it shows 8.5 as well. Is anyone else experiencing issues with new batches of the Hannah alk testing reagent? I was also suspicious that maybe the new syringes were bad but even with the old syringe I get the same readings.
I'm thinking I may just need to add +1 dKh to my readings for this batch but that is not ideal.
I'm thinking I may just need to add +1 dKh to my readings for this batch but that is not ideal.