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11.9. POTASSIUM
SPECIFICATIONS
Range
0.0 to 20.0 mg/L (as K)
Resolution
0.1 mg/L
Accuracy
±3.0 mg/L ±7% of reading at 25 °C
Light Source
LED with narrow band interference filter @ 466 nm
Method
Adaptation of the Turbidimetric Tetraphenylborate Method
REQUIRED REAGENTS
Code
Description
HI93750A-0
Potassium Reagent A
HI93750B-0
Potassium Reagent B
REAGENT SETS
HI93750-01
Reagents for 100 tests
HI93750-03
Reagents for 300 tests
For other accessories see ACCESSORIES section.
MEASUREMENT PROCEDURE
• Select the
Potassium
method using the procedure described in the METHOD SELECTION section.
• Fill the cuvette with 10 mL of sample (up to the mark).
• Add 6 drops of
HI93750A-0
the plastic stopper and the cap. Swirl the solution.
• Insert the cuvette into the holder and close the lid.
Potassium Reagent A. Replace
Quantity
6 drops
1 packet
×6
10 mL
63
63
63
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