Hach DR2400 - Page 693

Potassium
Potassium
Potassium_PP_Other_TPB_Eng_Ody.fm Page 5 of 6
Summary of Method
Potassium in the sample reacts with sodium tetraphenylborate to form
potassium tetraphenylborate, an insoluble white solid. The amount of turbidity
produced is proportional to the potassium concentration. Test results are
measured at 650.
Required Reagents
Quantity Required
Description per test Unit Cat. No.
Potassium Reagent Set (100 tests) .................................................................................................................24591-00
Includes:
(4) Potassium 1 Reagent Powder Pillows ......................................1 pillow........... 25/pkg...............14321-98
(4) Potassium 2 Reagent Powder Pillows ......................................1 pillow........... 25/pkg...............14322-98
(1) Potassium 3 Reagent Powder Pillows ......................................1 pillow........... 100/pkg.............14323-99
Potassium Standard Solution, 100-mg/L..............................................varies .............. 500 mL...............23517-49
Water, deionized ................................................................................................................. 4 liters ....................272-56
Required Apparatus
Clippers, for opening powder pillows .................................................1 ....................... each........................968-00
Cylinder, mixing, graduated, 25-mL .....................................................1 ....................... each......................1896-40
Flask, volumetric, 100-mL, Class A........................................................8 ....................... each....................14574-42
Pipet, TenSette
®
, 1–10 mL........................................................................1 ....................... each....................19700-10
Pipet Tips, for 19700-10 TenSette
®
Pipet ...............................................varies .............. 50/pkg...............21997-96
Sample Cells, 10-20-25 mL, w/cap.........................................................2....................... 6/pkg.................24019-06
Required Standards
Potassium Standard Solution, 100-mg/L..............................................varies .............. 500 mL...............23517-49
Potassium Standard Solution, 10-mL Voluette
®
Ampule, 250-mg/L......................... 16/pkg...............14790-10
Water, deionized ................................................................................................................. 4 liters ....................272-56