LaMotte Fresh Water Aquaculture - Manual (Page 23)

23
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
water
sample
0
0.1
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0.6
0.7
0.8
0.9
1.0
60
80
Result:
60 ppm
0
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1.0
HARDNESS TEST PROCEDURE
1 2 3
4 6 5
7 8 9
Fill the test tube
(0608) to the
12.9 mL line
with the
sample water.
Add 5 drops
of *Hardness
Reagent #5
(4483).
Cap and
swirl to mix.
Add 5 drops
of *Hardness
Reagent #6
Solution (4483).
Cap and swirl
to mix.
Solution will
turn red if
hardness is
present.
If solution is
blue, there is
no measureable amount
of hardness.
Fill Direct Reading
Titrator (0382) with
Hardness Reagent 7
(4487DR).
Read
the test
result
directly
from the
scale where the large ring
on the Titrator meets the
Titrator barrel. Record as
ppm Total Hardness
(CaCO
3
).
Insert the Titrator
into the center hole
of the test tube cap.
While gently
swirling the tube,
slowly press the
plunger to titrate
until red color
changes to clear
blue.