Millipore Spectroquant Multy Operating Manual page 186

Measuring range: 0.05 – 2.00 mg/l MBAS*
* Methylene-blue-active substances
Check the pH of the Select method 4 7 0 .
sample, specified range:
pH 5 – 10.
If required, add dilute
sodium hydroxide
solution or hydrochloric
acid drop by drop to
adjust the pH.
Add to each cell 2 drops Shake both cells for 30
of T-2K, close with the seconds.
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 .
Release 08/2014 - Spectroquant
Surfactants (anionic)
16-mm cell
Pipette 5.0 ml of the
sample into a reaction
cell, do not mix!
Reaction time:
10 minutes
Press Enter to start
the countdown.
®
Multy
Pipette 5.0 ml of distilled
water into a second re-
action cell, close with the
screw cap, do not mix!
(Blank cell)
Swirl both cells before
the measurement.
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) a surfactants standard
solution must be prepared from dodecane-1-sulfonic acid
sodium salt GR, Cat.No. 112146 (see section "Standard
solutions").
114697
Cell Test
Add to each cell 3 drops
of T-1K, do not mix!
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .