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169
PO
TASSIUM
8.54. 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 Quantity
HI93750A‑0
Potassium Reagent A
6 drops
HI93750B‑0
Potassium Reagent B
1 packet
REAGENT SETS
HI93750‑01
Reagents for 100 tests
HI93750‑03
Reagents for 300 tests
For other accessories see page 200.
MEASUREMENT PROCEDURE
• Select the
Potassium
method
using the procedure described
in the Method Selection section (see page 18).
• Fill the cuvette with 10 mL of sample (up to the mark).
• Add 6 drops of
HI93750A‑0
Potassium Reagent A.
Replace the cap and swirl the solution.
• Place the cuvette into the holder and close the lid.
10 mL