Millipore Spectroquant Multy Operating Manual page 155

Measuring range: 0.10 – 2.50 mg/l C
Check the pH of the Select method 3 7 0 .
sample, specified range:
pH 2 – 11.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Shake both cells vigor- Add to each cell 1 level
ously to dissolve the green microspoon of
solid substance. Ph-2K, close with the
screw cap.
Insert the cell containing
the sample into the cell
compartment. Align the
mark on the cell with
that on the photometer.
Press Test .
Important:
Very high phenol concentrationsin the sample result in
a weakening of the color and false-low readings are
yielded. In such cases the sample must be diluted
(plausibility check).
Release 08/2014 - Spectroquant
Phenol
H OH 16-mm cell
6 5
Pipette 10 ml of the
sample into a reaction
cell, close with the screw
cap, and mix.
Shake both cells vigor-
ously to dissolve the
solid substance.
®
Multy
Pipette 10 ml of distilled
water into a second
reaction cell, close with
the screw cap, and mix.
(Blank cell)
Reaction time:
1 minute
Press Enter to start
the countdown.
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) a phenol standard solution
must be prepared from Phenol GR, Cat.No. 100206 (see
section "Standard solutions").
114551
Cell Test
Add to each cell 1 level
grey microspoon of
Ph-1K, close with the
screw cap.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .