Dpd-1 Free Chlorine Test Procedure - eXact Micro 7+ Instruction Manual

DPD-1 Free Chlorine Test Procedure

CL1
1
2a
2b
3
4
5
6
For best results with this eXact
This version of the eXact
Free Chlorine (CL1) with the use of DPD-1 strip gives most acurate results below 6ppm.
For Chlorine testing above 6ppm, you may use the eXact
486672, product. This procedure can be found on page 9.
1
2
3
4
5
6
7
DO NOT discard the sample from the Free Chlorine
test if you are planning to run eXact
(Total Chlorine) Procedure. Move directly to steps 8-10
on page 5. Otherwise, rinse the cell immediately.
Micro 7+ Photometer and DPD-1 strips:
®
Micro 7+ meter has a range to 11ppm Chlorine. The algorithm for
®
REMOVE STRIP
Remove one (1) eXact
Part No. 486637 from the bottle before beginning
the test. Set the strip in a dry, convenient place and
recap the bottle immediately.
TURN METER ON
Press the ZERO/ON button to power the meter on;
the display will show all annunciators, then the
current MENU selection, followed by the last reading.
SELECT TEST: CL1
Press and re-press the MENU button until the
display shows the parameter CL1.
CL1 is also used for testing:
Total Chlorine (DPD-4), Ozone (DPD-4), Permanganate (DPD-1), and
Total Chlorine (DPD-3). (Contact ITS for specs and details if you are
planning on using CL1 for Permanganate or Ozone measurements)
RINSE AND FILL CELL WITH SAMPLE
Rinse the CELL at least 3 times with the water sample
you will be testing - rinsing minimizes the potential for
cross-contamination from a previous test. Finally, fill
cell to capacity (4ml) with the water sample.
ZERO METER
Press the ZERO/ON button. The cursor will move
across the display followed by 0.00 PPM. Sample is
ready for testing.
DIP STRIP AND PRESS "READ"
Dip the eXact Strip Micro CL (DPD-1), Part No.
®
486637 into the CELL and immediately press READ.
This starts the 20 SECOND countdown timer. During
this time move the strip in a gentle back and forth
motion. Remove and discard the strip after "1" on
the display disappears.
RECORD RESULT DISPLAYED
The cursor will move across the display while the
meter prepares to measure the sample. Record result
displayed (this result is automatically stored in CL1).
Strip Micro HRC, Part No.
®
4
Strip Micro CL (DPD-1),
®
Strip Micro DPD-3
®
CL