Test for determination of bivalent and trivalent iron dissolved in water.
Characteristics of the kit
– Type of analysis
Colorimetric
– Method of analysis
1.10 fentroline
– Sensitivity
0.05 ppm Fe
– Optimum measuring range
– on 20 ml (0,05-0,10-0,15-0,20 ppm Fe
– su 5 ml (0,25-0,5-1,0-2,0-5,0-7,5-10-15 ppm Fe)
No. determinations
100 (with scale 0.25-15 ppm)
Contents of the kit
– 1 bottle 25 cc iron A reagent
– 2 tubes of 20 ml
– 1 colour scale 0.25-15 ppm
– 1 colour scale 0,05-0,2 ppm
– 1 comparator
– instructions
Instructions for use
Rinse the test tubes thoroughly with the water to be analysed.
Place the colour scale on a well-lit flat surface (not in direct sunlight)
For concentrations between 0.25 and 15 ppm Fe:
– Pour 5 ml of the water to be analysed into one of the two test pieces (blank test) and insert it in a hole in the comparator. Place the comparator on the colour scale of 0,25 to 15 ppm Fe so that the coloured fields are below the blank test.
– Pour 5 ml of the water to be analysed into the second test tube.
– Add 6 drops of iron A reagent, hold the dripper upright and shake.
– After about 5 minutes, insert the test piece into the empty hole in the comparator.
– Compare the colors from above by pushing the comparator back and forth until you find the corresponding color, then read the relative concentration of iron.
For concentrations between 0.05 and 0.2 ppm Fe:
– Pour 20 ml of the water to be analysed into one of the two test pieces (blank test) and insert it in a comparator hole. Place the comparator on the colour scale 0,05 to 0,2 ppm Fe so that the coloured fields are below the blank test.
– Pour 20 ml of the water to be analysed into the second test tube.
– Add 24 drops of Iron A reagent, holding the dripper upright and stirring.
– Compare the colours from above by pushing the comparator back and forth until you find the corresponding colour, then read the relative iron concentration.
