Hanna Instruments HI97106, Instruction Manual, Page: 15 / 28

15 Photometer
6. PHOTOMETER
6.1. RANGE SELECTION
1. Press Range when in measurement mode.
2. Use the functional keys to highlight the desired range then press Select .
• If tutorial mode is disabled, follow the measurement procedure.
• If tutorial mode is enabled, press
Measure and follow the messages on the screen.
Note : At power on the instrument starts with the previously selected range.
6.2. USING THE 16 mm VIAL ADAPTER
To insert the adapter:
1. Orient the adapter with the two small holes toward the bottom.
The index mark on adapter should align with the index mark on the instrument.
2. Press down gently, keeping the marks aligned, until the adapter reaches the bottom
of the vial holder.
The meter is ready for use. Always use the adapter for both Zero and Read measurements
as specified in the parameter instructions.
Warning : Improper use of the adapter could cause irreversible damage to the instrument.
Always use the following precautions while using the 16 mm adapter.
•
Never use excessive force to insert the adapter. Users should be able to insert the vial with light pressure
using one finger. If the vial does not reach the bottom, if there is resistance, or in case of “Check the
Zero cuvette” message during the “Zero” operation, check the aligment of the two index marks, and
gently push down the adapter to ensure it reaches the bottom of the vial holder.
• Never insert hot vials or samples into the adapter. Samples should be near room temperature before
inserting into the adapter.
6.3. VIAL PREPARATION & MIXING
Measure and add correct sample or DI water quantity as specified in the measurement
procedure.
Proper mixing is very important for reproducibility of the measurements. The proper
mixing technique for each method is listed in the method procedure.
Vial inversion is represented here:
For one inversion:
1. Hold the vial in vertical position.
2. Turn the vial upside‑down and wait for all of the
solution to flow to the cap end.
3. Return the vial to the upright vertical position.
4. Wait for all of the solution to flow to the vial bottom.
45°