HANNA HI 98202 Soft Water Tester Instruction Manual

Update: 30 September, 2023

The document introduces the use of the pNa HI 98202 soft water tester. The instrument uses a sodium ion-selective electrode to determine the activity of free sodium in solution (pNa = -log aNa). In dilute solutions, the activity coefficient is nearly 1 and in such solutions pNa is a good indicator of the sodium ion concentration. The relationship between the pNa scale and the g/L Na+ scale is explained in the chart below. A double junction reference is used to ensure a highly stable reading. If you suspect that the calibration has drifted, you can recalibrate the meter by using a solution of known concentration. Adjust the reading with the calibration trimmer.

Brand: HANNA

File format: PDF

Size: 127 KB

MD5 Checksum: BFCC1B8F57F2A60EE631A8E86ED1CB27

Publication date: 10 July, 2012

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