Section 3 Operation
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and wear all of
the personal protective equipment appropriate to the chemicals that are
handled. Refer to the current safety data sheets (MSDS/SDS) for safety
protocols.
C A U T I O N
Chemical exposure hazard. Dispose of chemicals and wastes in accordance
with local, regional and national regulations.
Refer to the operation steps that follow and the applicable method at
https://www.Hach.com/WAH to do a titration procedure.
3.1 Install a titration cartridge
1. Select the correct titration cartridge to use. Refer to the table in the titration
procedure (method).
If the expected sample concentration is not known, start with one of the
smaller sample volumes and determine the approximate concentration. Then,
do the test again with the correct sample volume.
2. Install the titration cartridge. Refer to Figure 3.
Use a straight delivery tube for hand-held titrations. Use a 90° delivery tube
(4157800) for fixed-position titrations.
Only put the delivery tube into the cartridge nozzle. It may be necessary to
remove a small burr on the cartridge nozzle before the delivery tube can be
installed.
3. Flush the delivery tube as follows:
a. Hold the tip of the cartridge up.
b. Push in the plunger release button and move the button forward to move
the plunger toward the cartridge. Do not push solution out of the delivery
tube.
c. Turn the delivery knob until several drops of solution come out of the
delivery tube.
d. Turn the counter reset knob to set the digital counter to zero.
e. Wipe the tip of the delivery tube or rinse the tip with deionized water.
6 English
To Next Page
Loading...
