YSI 9300 Photometer - Manual (Page 7)

Taking Test Readings
1 Press key. The instrument will beep and power on and display the
‘Choose a Test’ menu box, with the last test program used highlighted as
the active line.
The cursor will flash on ‘OK’ in the options menu at the bottom of the
screen.
Press [OK] to accept this program and follow the on-screen instructions for
the chosen test.
2 To choose a different test program, either use the and keys to scroll
through the menu options, or use the numeric keys to enter the Phot
number of the desired test.
Press [OK] to accept the selected program.
3 for example, the following display will appear:
Chlorine-Free / 5
Phot 007
Insert Blank
Choose a Test OK
Place a BLANK TUBE (sample only) in the test chamber, then press [OK].
NOTE: The instrument is designed to hold the blank setting as long as the instrument is switched
on. This stage will be omitted when further tests are being carried out. However, when changing
to a test which requires a colored or reagent blank, or uses a tube of a different diameter, the
‘Insert Blank’ prompt will be displayed.
4 The instrument will be set automatically, and after a few seconds the
following display will appear:
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].
5 The instrument will take the reading and display the result:
Chlorine-Free / 5
Phot 007
1.00
mg/l Cl
2
Choose a Test Read Blank Follow-On
7