Millipore Spectroquant Multy Operating Manual page 124

Measuring range: 10– 1200 µg/l N
Attention: In contrast to the instructions given in the package insert the sample volume as well as the reagent volume
must be doubled.
Check the pH of the Select method 2 3 0 .
sample, specified range:
pH 2 – 10.
If required, add dilute
sodium hydroxide
solution or sulfuric acid
drop by drop to adjust
the pH.
Reaction time: Transfer each solution
5 minutes into a separate 24-mm
Press Enter to start cell, close with the screw
the countdown. caps.
Release 08/2014 - Spectroquant
Hydrazine
H 24-mm cell
2 4
Pipette 10 ml of the
sample into a test tube.
Insert the blank cell into
the cell compartment.
Align the mark on the
cell with that on the pho-
tometer. Press Zero .
®
Multy
Pipette 10 ml of distilled
water into a second test
tube.
(Blank)
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 hydrazine standard solu-
tion must be prepared from Hydrazinium sulfate GR, Cat.
No. 104603 (see section "Standard solutions").
The measurement results are expressed in µg/l.
109711
Test
Add to each test tube
4.0 ml of Hy-1 with
pipette and mix.