Millipore Spectroquant Multy Operating Manual page 151

Measuring range: 20 – 500 µg/l DEHA*
* N,N-diethylenhydroxylamine
27 – 667 µg/l Carbohy*
* carbohydrazide
53 – 1315 µg/l Hydro*
* hydroquinone
78 – 1950 µg/l ISA*
* isoascorbic acid
87 – 2170 µg/l MEKO*
* methylethylketoxime
Pipette 10 ml of the
Select method 5 5 5 .
sample into a 24-mm
cell.
Add to each cell 0.20 ml Reaction time:
of Oxyscav 2 with pi- 10 minutes, protect
pette, close with the from light in the pro-
screw cap, and mix. cess, measure immedi-
ately.
Press Enter to start
the countdown.
Release 08/2014 - Spectroquant
Oxygen Scavengers
Pipette 10 ml of distilled
water into a second
24-mm cell.
(Blank cell)
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
®
Multy
24-mm cell
24-mm cell
24-mm cell
24-mm cell
24-mm cell
Add to each cell 1 pow-
der pack of Oxyscav 1
and 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 .
Quality assurance:
To check the measurement system (test reagents, meas-
urement device, and handling) a oxygen scavengers stan-
dard solution must be prepared from N,N-diethylhydroxyl-
amine, Cat.No. 818473 (see section "Standard solutions").
The measurement results are expressed in µg/l.
119251
Test
Swirl both cells to dis-
solve the solid sub-
stance.