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Potassium
 

Product Name Type Gradation of scale
or limit of sensitivity
Presentation Product #
Potassium test paper Yes/No test paper 250 mg/l K+ box of 200 strips (20 x 70 mm) 90727
QUANTOFIX® Potassium Semi-quantitative test strips 0 · 200 · 400 · 700 · 1000 ·1500 mg/l K+ box of 100 strips + reagents 91316
VISOCOLOR® ECO Potassium Turbidity test kit 2 · 3 · 4 · 6 · 8 · 10 · 15 mg/l K+ kit (60 tests) 931032

 

Note: mg/l is equivalent to ppm

#90727 Potassium test paper

$48.00/box of 200 strips (20 x 70 mm)

This test paper shows potassium as orange-red spots on a light yellow background. Rubidium, cesium and thallium(I) also produce orange-red color reactions. Excess of sodium and heavy metal ions reduce sensitivity. Larger amounts of ammonium ions cause interfering discolorations. In the instructions for use, which are supplied with the paper, a special method is provided to circumvent any of these interferences.
 

Color reaction: bright-yellow → orange    
       

#91316 QUANTOFIX® Potassium

$46.50/box of 100 strips + reagents

Test sticks and reagents for the semi-quantitative determination of potassium (K + ) in solutions. Sodium ions > 3000 mg/l cause low results. The following ions do not interfere: < 1000 mg/l Al 3+ , Ba 2+ , Bi 3+ , Ca 2+ , Fe 2+ /Fe 3+ , Mg 2+ , Mn 2+ , Sr 2+ , Zn 2+ ; < 200 mg/l NH 4 + , Hg + /Hg 2+ , Tl + ; < 25 mg/l S 2û Protect test sticks from sunlight and moisture. Store package in a cool and dry place (storage temperature below +30 ¦C).

This test allows the quick and easy determination of potassium in solutions. It includes all necessary reagents so that the measurement can be started immediately. A reliable result is obtained within 1 minute. The natural potassium content in ground water is generally about 1– 2 mg/l K. Higher values may indicate fecal contaminations, but can also originate from potassium fertilizers. For the growth of plants and animals potassium is an essential factor. Especially in agriculture the determination of potassium therefore gains increasing importance.
 
Color reaction: bright yellow →orange

 

 
       

#931032 VISOCOLOR® ECO Potassium

$107.00/kit (60 tests)

Potassium reacts with sodium tetraphenylborate to form a precipitate. Under defined conditions this turbidity can be used for concentration measurements. Turbidities interfere and have to be filtered prior to the test. Good reproducibility is obtained for drinking, surface and ground water. For polluted waste waters low potassium values are measured.

The natural potassium content in ground water is generally about 1 – 2 mg/l K+. Higher values may indicate faecal contaminations, but can also originate from potassium fertilisers. For the growth of plants and animals potassium is an essential factor. Especially in agriculture the determination of potassium therefore gains increasing importance.
 

Sea water suitability: yes, after dilution (1+1) Detectible with PF-12: yes