Everyone will be aware of the problems associated with the Hi783. I have a fix which I believe Hanna UK have taken onboard who confirm the fix works.
Follow instructions for reagent A and the 5ml sample. Zeroise then add 1.1ml of reagent B. If you only add 1ml readings are high if you add more than 1.1ml readings are low.
Follow instructions for reagent A and the 5ml sample. Zeroise then add 1.1ml of reagent B. If you only add 1ml readings are high if you add more than 1.1ml readings are low.