Treated Sample Measurement.
Zero and make reference cell adjustments with the blank or reference sample cell as described in para
Follow steps in the applicable test procedure to treat test sample.
Make sure the meter scale card(2) specified in the procedure is in place.
Place the test sample in the sample well(5) and close the light shield lid(4).
The meter needle position indicates the test results as shown on the meter scale card.
Shutdown of the Spectrophotometer.
When testing is complete, push on/off toggle switch(12) to OFF position.
Lift light shield lid(4) and remove sample cell from sample cell well(5).
Remove meter scale card(2) from slot in meter scale housing(13).
Electrical shock may occur if Spectrophotometer front panel is opened while connected to ac
power. Always unplug power cord from both spectrophotometer and external power source
before removing front panel. Using the Spectrophotometer when not set up for the proper type
of power may result in electrical shock. If electrical shock occurs, see medic.
If using external ac power, perform step (4). If using battery power, perform steps (5) through (7).
Unplug power cord from external power source and from the Spectrophotometer.
Loosen the captive thumb screws(9) on the front panel.
Lift the front panel up and out of the case. Disconnect battery power cable(28) from the amplifier circuit
board(25) at BC5(24).
If Spectrophotometer will not be used for two weeks, remove batteries(17). If Spectrophotometer will be
used, proceed to next step.
Install front panel into case and secure with captive thumb screws(9).
Insert meter scale cards(2) in storage well(3).
Clean sample cells(7). See para 188.8.131.52.
Insert one sample cell in the sample cell well(5) and the second into the cell storage well(6).
Replace lid(15) on the Spectrophotometer case.