Salinity test pen calibration

[cutebarra77]

Hi,

Any idea how I can make my own calibration solution to recalibrate my digital salinity test pen?

Thanks!

[inwear]

I used DI water and zero it as sg 1.0

[cutebarra77]

Thanks but I don't have DI water. Can bottled distilled water work the same with the same sg 1.0?

[asg]

Bro. Can but those SG solution too to calibrate. Ah beng got sell.

[inwear]

Thanks but I don't have DI water. Can bottled distilled water work the same with the same sg 1.0?

I used bottle DI water.

[cutebarra77]

Hi inwear, which type of bottled DI water are you referring to? Buy from nutc?

[xiggie]

All bottled di water should read 1.0, even tap water should read 1.0

[inwear]

Any bottled DI water. From the table of analysis it will read TDS as 0 ( total dissloved solid). BTW i worked in a lab and have access to lab grade ultra clean water. I did a comparison years back. The general generic brand available in the market's sg have similar close reading. Difference is not significant by 2- 3 decimal points