Hach LANGE Pocket Colorimeter II User Manual page 22

Enter a calibration curve with standards
Note: Deionized water can be used for the blank unless the sample is
significantly more turbid or has more color than deionized water.
1. Set the instrument to the range to calibrate. Refer to
instrument on page 11.
2. Prepare the blank and the reacted standard solution. Refer to the
test procedure. Let the color fully develop.
3. Set the instrument to zero.
a. Insert the blank sample cell in the cell holder.
b. Install the instrument cap over the cell holder.
c. Push
d. Remove the instrument cap.
e. Remove the sample cell from the cell holder.
4. Push and hold
.
Note: If "USER" and "CAL" do not show, the factory calibration cannot be
changed on the selected range.
5. When "RES" shows on the display, set the resolution.
a. Push
b. To change the resolution, push
change.
c. To not change the resolution, push
6. When "S0" shows on the display, push
blank value, then push
Note: Push
7. When "A0" shows on the display, measure the absorbance of the
blank.
a. Insert the blank sample cell in the cell holder.
b. Install the instrument cap over the cell holder.
c. Push . The display shows the absorbance value for "S0".
d. Remove the sample cell from the cell holder.
8. Push to show "S1".
22 English
. The display shows "- - - -", then "0.000".
until "USER" and then "CAL" shows, then push
. The resolution setting (decimal placement) shows.
.
to go to the next digit.
, then . Push
.
. Push to enter the
Configure the
to save the