LaMotte Fresh Water Aquaculture - Manual (Page 14)

14
Carbon Dioxide
DESCRIPTION CODE
*Phenolphthalein Indicator, 1% *2246-E
*Carbon Dioxide Reagent B *4253DR-H
Direct Reading Titrator, 0-50 Range 0380
Test Tube, 5-10-12.9-15-20-25 mL, glass, w/cap 0608
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents go
to lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or fax.
Result:
40 ppm
water
sample
CARBON DIOXIDE TEST PROCEDURE
1 Note: 2
3 5 4
6
Fill the test tube
(0608) to the
20 mL line
with the
sample water.
Fill Direct Reading
Titrator (0382) with
Carbon Dioxide
Reagent B
(4253DR).
Read the test result
directly from the
scale where the large
ring on the Titrator
meets the Titrator
barrel. Record as
Carbon Dioxide.
While gently
swirling the
tube, slowly
press the
plunger to
titrate until a
faint pink color
develops and
persists for 30
seconds.
Add 2 drops of
Phenolphthalein
Indicator, 1%
(2246). If sample
turns red, no free
carbon dioxide is
present. If sample
is cololess,
proceed to Step 3.
Insert the
Titrator into
the center
hole of the
test tube cap.
For best results, test
a freshly obtained
sample, and avoid
splashing or prolonged
contact with air.
NOTE:
The Titrator is calibrated in terms
of carbon dioxide expressed as
ppm Free CO
2
. Each minor division
on the Titrator scale equals 1.0
ppm CO
2
.