YSI 9500 Photometer - Manual (Page 13)

Chlorine-Free / 5
Phot 007
Insert Sample
Blank - Choose a Test - Time OK
Place SAMPLE TUBE (sample and reagent) in the test chamber, then
press [OK].
7 The instrument will take the reading and display the result as follows, for
example :-
Chlorine-Free / 5
Phot 007
1.00
mg/l Cl
2
Choose a Test Read Blank Follow-On
The following symbols indicate the result is out of test range :-
Result is higher than range > >
Result is lower than range < <
8 The ‘Options’ menu at the bottom then offers the choice to :-
‘Choose a Test’ - return to the menu of test programs and select another test
‘Read’ - read further sample tubes of the currently selected test
‘Blank’ - re-blank the instrument
‘Follow-On’ - carry out a continuation test if available.
Continuation Tests (Certain Tests Only)
1 Select ‘Follow-On’ and press [OK] during the result display period of the
foregoing test stage. The ‘Insert Sample’ screen will appear.
Place SAMPLE TUBE in the test chamber, then press [OK].
2 The instrument will take the reading and calculate the result from the
combination of readings (where appropriate). The result will be displayed:
Chlorine-Total / 5
Phot 008
1.50
mg/l Cl
2
Choose a Test Read Blank Return
13