Matrix Correction; Matx1 Correction (One Point Matrix Correction); Matx1 Cl- Correction - Hach NO3D sc User Manual

Operation

4.6.3 Matrix correction

4.6.3.1 MATX1 correction (one point matrix correction)

CALIBRATE
CAL. CONFIG.
DATE
CONC MEAS 1
SET NO3–N CONC
READING STABLE?
NO3–N:
DRIFT
CL-
DRIFT

4.6.3.2 MATX1 CL- correction

CALIBRATE
CAL. CONFIG.
DATE
CONC MEAS 1
SET CL- CONC
SET NO3–N CONC
24
Note: Perform laboratory values or comparative values with cuvette tests
timely or stabilized the sample, to avoide a modification of the sample
concentration.
In 7.3 Validation accessories on page 37
recommended tests which can be used for laboratory
measurements.
Note: Laboratory comparison or verification samples are time sensitive.
Perform analysis of these samples as quickly as possible to minimize the
potential for a bias or interference in the results.
Proceed as follows to perform the MATX1:
1. Select
SENSOR SETUP>NO3D SC>CALIBRATE> CAL CONFIG
2. Select in the selection window and press
MATX1
3. Select
CONC MEAS 1
The currently measured nitrate and chloride values are displayed.
The drift indicates whether the measured value is stable.
4. Wait until the measured value is stable and confirm by pressing
(Drift should be < 0.03 mg/L). The values for nitrate and
ENTER
chloride are saved.
5. Immediately after saving, take a water sample for laboratory
analysis from as close to the sensor as possible.
6. Analyze the sample immediately after taking the sample as its
nitrate content can change quickly.
After determining the laboratory reference value, proceed as
follows:
7. Select
SENSOR SETUP>NO3D SC>CALIBRATE>
.
SET NO3–N CONC
8. Enter the laboratory value (reference value) for NO
press to confirm. Confirmation of the entered laboratory
ENTER
value activates the matrix correction.
Proceed as follows to perform the MATX1 CL-:
1. Select
SENSOR SETUP>NO3D SC>CALIBRATE> CAL CONFIG
2. Select in the selection window and press
MATX1 CL-
3. Select
CONC MEAS 1
you can find
.
.
.
.
ENTER
–N and
3
.
.
ENTER