16
Figure 18
Press
‘
Meas
’
back to test mode.
6. the notice of the sample
a.
Put the test tube containing distilled water or other blank solvent into the sample chamber,
and close the cover. Press the
“
clear
”
button, display
“
0
”
. (If there are air bubbles in the
test tube, the first thing should be done is to make the air bubbles float on the protruded
tube-neck. The atomized water drops on the both ends of test tube should be wiped dry.
The screw-nut of the test tube should not be screwed down too tightly, so as to avoid
stress, otherwise, the readings may be affected. When placing the test tube, care should
be taken for the marked position and direction.)
b.
Take out the test tube, then, inject the sample to be measured into the test tube.
According to the same position and direction, put the test tube into the sample chamber,
then, close the cover. Now the instrument will indicate the optical rotation of the sample.
c.
The instrument will do repetition measurement for n times automatically, and display the
value (when n=6,
1
n
S
is effective). If n=1, press
“
repetition-measurement
”
button to
reset. If n>1, press
“
repetition-measurement
”
button, the instrument will measure
repeatedly for n times.
d.
Please press
“
zero
”
button before measurement every time.
