YSI pHotoFlex Series - Manual (Page 35)

35 ba76126e01 03/2013
Note: Before using the test with your photometer for the first time, determine the reagent blank
value.
YSI model no.: N2H4-1 TP
Category: RT (reagent test)
Cell: 28 mm
Measuring range: 0.004 - 0.600 mg/l N
2
H
4
Display in mmol/l possible
Pipette 10.0 ml of sample
into the empty cell. With a pipette add 0.5 ml
Vario Hydra2 Reagent
Solution and close the
cell with the screw cap. Mix the contents by
carefully swaying the
cell. Allow to react for 12
minutes. Insert the cell in the
photometer cell shaft
and start measurement.
Notes:
• We recommend to determine a new reagent blank value (deionized water instead of sample) for each test package started.
• If any hydrazine is present, the solution develops a yellow color after the reagent is added.
• The temperature of the samples must be 21±4 °C.
• Avoid moving the sample or too long exposure to air.
12:00
Hydrazine vario
Program no.
329
*RN329*