LaMotte TC-3000 Tri-Meter - Manual (Page 40)

6. Open the meter lid. Insert the tube
into the chamber. Align the index
notch on the positioning ring with
the index arrow on the meter. Close
the lid and press
*IOK to select
Scan Blank .
F r e e C h l o r i n e ( L )
* S c a n B l a n k
1 6 : 0 2 : 1 9
0 1 / 0 4 / 0 5
7. Remove the tube from the meter.
Add 5 drops of DPD 1A Free
Chlorine Reagent (P-6740). Cap
and mix.
8. Add 5 drops of *DPD 1B Free
Chlorine Reagent (P-6741). Cap
and mix. Solution will turn pink if
free chlorine is present. Read within
30 seconds.
9. Open the meter lid. Insert tube into
chamber. Align the index notch on
the positioning ring with the index
arrow on the meter. Close lid, press
*IOK to select
Scan Sample
.
F r e e C h l o r i n e ( L )
* S c a n S a m p l e
1 6 : 0 2 : 1 9
0 1 / 0 4 / 0 5
10. Record the result as Free Chlorine. T o t a l C h l o r i n e ( L )
1 . 0 0
p p m
* S c a n S a m p l e
‚
1 6 : 0 2 : 1 9 0 1 / 0 4 / 0 5
40 ANALYSIS & CALIBRATION • CHLORINE
DPD
1A
DPD
1B