Iron in the sample can cause high readings. This can be prevented by adding and crushing an EDTA tablet in the 10 mL sample prior to step 1 of the test method
01
Fill to the 10 mL line with sample.
02
Use this to "blank" the instrument. Place in cell holder and press Blank.
03
Prepare sample by adding a Molybdate HR No1 tablet and crush and stir.
04
Then, add a Molybdate HR No2 tablet and crush and stir.
05
Place the tube in the cell holder and press Measure to obtain the concentration of Molybdate.