Hach DR300 Manuel De L'utilisateur page 11

Section 6 Do a test
Chemical or biological hazards. If this instrument is used to monitor a
treatment process and/or chemical feed system for which there are
regulatory limits and monitoring requirements related to public health,
public safety, food or beverage manufacture or processing, it is the
responsibility of the user of this instrument to know and abide by any
applicable regulation and to have sufficient and appropriate
mechanisms in place for compliance with applicable regulations in
the event of malfunction of the instrument.
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.
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.
The generic steps to do a test follow.
To do a test for a specific parameter (e.g., chlorine), download the test
procedure from the manufacturer's website. Refer to
procedure on page 14.
1. Push to select the applicable measurement range (e.g., LR or
HR).
2. Prepare the blank. Refer to the test procedure.
3. Clean the sample cell with a no-lint cloth.
4. Insert the blank sample cell into the cell holder. Make sure to install
the blank sample cell in the correct and consistent orientation so
that the results are more repeatable and precise. Refer to
5. Install the instrument cap over the cell holder. Refer to
6. Push to set the instrument zero.
D A N G E R
D A N G E R
C A U T I O N
Download a test
Figure
Figure 6.
English 11
5.