49
Addendum 2: Optional Ion Selective Electrodes
The meter is capable of connecting a variety of composite ion selective electrodes. The following list shows the selectable sensors and its range.
MODEL
ION
RANGE
F-US
Fluoride
1× 10
-6
M~ Saturation
CL-US
Chloride
5× 10
-5
~1M
Br-US
Bromide
5× 10
-7
~1M
Cn-US
Cyanide
8× 10
-6
~0.01M
Na-US
Sodium
4× 10
-6
~1M
NO3-US
Nitrate
7× 10
-6
~1M
Ca-US
Calcium
5× 10
-7
~1M
NH4-US
Ammonium
5× 10
-6
~0.1M
Cd-US
Cadmium
1× 10
-6
~0.1M
NH3-US
Ammonia
1× 10
-6
~1M
Cu-US
Cupric
1× 10
-6
~0.1M
I-US
Iodide
5× 10
-8
~1M
Pb-US
Lead
1× 10
-6
~1M
K-US
Potassium
7× 10
-6
~1M
Ag-US
Silver
1× 10
-7
~1M
S-US
Sulphide
1× 10
-7
~1M
Addendum 3: How to prepare the electrode storage solution
Dissolve 22.365 grams of potassium chloride reagent (KCL) in the 100mL distilled water. Stir the solution until the solution has thoroughly mixed.
Addendum 4: How to prepare the conductivity standard solutions
Place AR potassium chloride reagent in a 50mL beaker and dry in an oven for 3 to 5 hours at 105°C, then cool to room temperature in desiccator.
CALIBRATION SOLUTIONS
REAGENT
84µS/cm
Accurately weigh out 42.35mg of KCL and dissolve in 1000mL de-ionised water
1413µS/cm
Accurately weigh out 745.9mg of KCL and dissolve in 1000mL de-ionised water
12.88mS/cm
Accurately weigh out 7.45g of KCL and dissolve in 1000mL de-ionised water
111.8mS/cm
Accurately weigh out 74.5g of KCL and dissolve in 1000mL de-ionised water
Stir the solution until the reagent has thoroughly mixed.
EC910 Portable Multiparameter Water Quality Meter
