Hanna instruments strange readings

[Bugger]

I have a checker that gives strange readings
first it says dkh is 110 then the same sample tested again gives 156 and then 140

 

[120reefkeeper]

https://www.bulkreefsupply.com/hi75...rds-for-hi755-hanna-checker-marine-water.html

You could try this to help. [emoji41]

 

[chefjpaul]

https://www.bulkreefsupply.com/hi75...rds-for-hi755-hanna-checker-marine-water.html

You could try this to help. [emoji41]

This[emoji651],
also, how old is the battery?

 

[Hanna Instruments]

I have a checker that gives strange readings
first it says dkh is 110 then the same sample tested again gives 156 and then 140

Make sure to visit our blog to make sure you are following our 8 checker best practices such as indexing the cuvette in the same position every time, removing any air bubbles, finger prints or smudges and using separate pipettes/syringes for freshwater and saltwater. Feel free to reach out with any questions!