Spectroquant Pharo 300 - Page 394

Filter turbid samples. Pipette 2.0 ml of the
sample into a reaction
cell, close with the screw
cap, and mix.
Add 1 level green micro-
spoon of SO
4
-1K, close
the cell with the screw
cap.
Reaction time:
2 minutes, measure
immediately.
Place the cell into the
cell compartment. Align
the mark on the cell with
that on the photometer.
100617
Cell Test
Sulfate
Shake the cell vigorous-
ly to dissolve the solid
substance.
Measuring 50 – 500 mg/l SO
4
range: Expression of results also possible in mmol/l.
Check the pH of the
sample, specified range
:
pH 2– 10.
If required, add dilute
sodium hydroxide
solution or hydrochloric
acid drop by drop to
adjust the pH.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) w
e recommended to use
Spectroquant
®
CombiCheck 10, Cat.No. 114676, or the
Standard solution for photometric applications, CRM,
Cat.No. 125051 and 125052.
Ready-for-use sulfate standard solution Certipur
®
,
Cat.No. 119813, concentration 1000 mg/l SO
4
2–
, can also
be used after diluting accordingly.
To check for sample-dependent effects the use of addition
solutions (e.g. in CombiCheck 10) is highly recommended.