Spectroquant Pharo 300 - Page 398

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.
Pipette 0.50 ml of SO
4
-1
into a test tube.
Add 5.0 ml of the sam-
ple with pipette and mix.
Sulfate
102537
Test
Transfer the solution into
a corresponding cell.
Select method with
AutoSelector.
Place the cell into the
cell compartment.
Add 1 level blue micro-
spoon of SO
4
-2.
Release 06/2014 - Spectroquant
®
UV/VIS Spectrophotometer Pharo 300
Reaction time:
2 minutes, measure
immediately.
Measuring 5 – 300 mg/l SO
4
10-mm cell
range: Expression of results also possible in mmol/l.
Filter turbid samples.
Shake the test tube vig-
orously to dissolve the
solid substance.
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. 125050 and 125051.
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.