SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
Instruction Manual
www.hannainst.com
Dear Customer,
Thank you for choosing a Hanna Product.
Please read the instruction sheet carefully before using the
test kit. It will provide you with the necessary information
for correct use of the kit. If you need additional information,
do not hesitate to e-mail us at [email protected].
Remove the chemical test kit from the packing material and
examine it carefully to make sure that no damage has
occurred during shipping. If there is any noticeable dam-
age, notify your Dealer or the nearest Hanna office
immediately.
Each kit is supplied with:
• Phenolphthalein Indicator, 1 bottle with dropper (10 mL);
• Bromophenol Blue Indicator, 1 bottle with dropper (10 mL);
• HI 38013-0 Alkalinity Reagent, 2 bottles (2x105 mL);
• 1 calibrated plastic vessel (20 mL) with cap;
• 1 syringe (1 mL) with tip.
Note:
Any damaged or defective item must be returned in
its original packing materials.
HI 38013
Phenolphthalein
and Total Alkalinity
Test Kit
ISTR38013 11/00 PRINTED IN ITALY
Alkalinity is the quantitative capacity of a water sample to
neutralize an acid to a set pH. This measurement is very
important in determining the corrosive characteristics of water
due primarily to hydroxide, carbonate and bicarbonate ions.
Other sources of alkalinity can be from anions that can be
hydrolyzed such as phosphate, silicate, borate, fluoride and
salts of some organic acids. Alkalinity is critical in the treat-
ments of drinking water, wastewater, boiler & cooling systems
and soils.
The Hanna Alkalinity Test Kit makes monitoring easy and
quick. The compact size gives the user the versatility to use
the kit anywhere. The design makes the kit easy to handle.
Note:
1 gpg (grain per gallon) CaCO
3
is equivalent to 17
ppm CaCO
3
(where
ppm - parts per million - is
equivalent to mg/L).
SIGNIFICANCE AND USE
SIGNIFICANCE AND USE
SIGNIFICANCE AND USE
SIGNIFICANCE AND USE
SIGNIFICANCE AND USE
CHEMICAL REACTION
CHEMICAL REACTION
CHEMICAL REACTION
CHEMICAL REACTION
CHEMICAL REACTION
Alkalinity can be measured as Phenolphthalein Alkalinity
and Total Alkalinity. The Phenolphthalein Alkalinity is de-
termined by neutralizing the sample to a pH of 8.3 using
a dilute sulfuric acid solution and a phenolphthalein indica-
tor. This process converts hydroxide ions to water, and
carbonate ions to bicarbonate ions:
2OH
–
+H
2
SO
4
→
2H
2
O+SO
4
2–
2CO
3
2–
+H
2
SO
4
→
2HCO
3
–
+SO
4
2–
Since bicarbonate ions can be converted to carbonic acid with
additional sulfuric acid, the Phenolphthalein Alkalinity mea-
sures total hydroxide ions, but only half of the carbonate
contribution. To completely convert the carbonate ions, sulfuric
acid is added until the sample's pH is 4.5:
2HCO
3
–
+H
2
SO
4
→
2H
2
CO
3
+SO
4
2–
This is known as Total Alkalinity.
INSTRUCTIONS
INSTRUCTIONS
INSTRUCTIONS
INSTRUCTIONS
INSTRUCTIONS
READ ALL THE INSTRUCTIONS BEFORE USING THE TEST KIT
Determination of Phenolphthalein Alkalinity
• Remove the cap from the plastic
vessel. Rinse the plastic vessel with
water sample, fill to the 5 mL mark
and replace the cap.
• Add 1 drop of Phenolphthalein Indicator through the
cap port, and mix carefully by swirling the vessel in
tight circles. If the solution remains colorless, record the
phenolphthalein alkalinity as zero, and proceed with
the procedure for the determination of Total Alkalinity
(see below). If the solution is pink or red, proceed to the
next step.
• Take the syringe and push
the plunger completely down
into the syringe. Insert tip
into the HI 38013-0 Alka-
linity Reagent and pull the
plunger out until the lower
edge of the seal is on the
0.0 mL mark of the syringe.
• Place the sy-
ringe tip into
the cap port of
the plastic ves-
sel and slowly
add the titra-
tion solution
drop by drop,
swirling after
each drop.
• Continue adding titration solution until the solution in
the plastic vessel turns colorless.
• Read off the milliliters of titration solution from the
syringe and multiply by 20 to obtain gpg CaCO
3
of
Phenolphthalein Alkalinity of your sample.
mL of titrant x 20 = gpg CaCO
3
Determination of Total Alkalinity
• Remove the cap from the plastic
vessel. Rinse the plastic vessel with
water sample, fill to the 5 mL mark
and replace the cap.
• Through the cap port, add 1 drop of Bromophenol Blue
Indicator and mix. If the solution is yellow, then it is
acidic and an acidity test must be carried out (see HI 3820 –
Hanna Acidity Test Kit). If the solution is green or blue,
then proceed to next step.
• Take the syringe and push
the plunger completely down
into the syringe. Insert tip
into the HI 38013-0 Alkalin-
ity Reagent and pull the
plunger out until the lower
edge of the seal is on the 0.0
mL mark of the syringe.
• Place the sy-
ringe tip into
the cap port of
the plastic ves-
sel and slowly
add the titra-
tion solution
drop by drop,
swirling after
each drop.
• Continue adding titration solution until the solution in
the plastic vessel turns yellow.
• Read off the milliliters of titration solution from the
syringe and multiply by 20 to obtain gpg CaCO
3
of
Total Alkalinity of your sample.
mL of titrant x 20 = gpg CaCO
3
Low Range Determinations
If results are lower than 10 gpg, the
precision of the test can be improved
as follows.
• Remove the cap from the plastic vessel. Rinse the vessel
with water sample, fill to the 10 mL mark and replace
the cap. Proceed with the test as described before. Read
off the milliliters of titration solution from the syringe
and multiply by 10 to obtain the result for both
Phenolphthalein and Total Alkalinity as gpg CaCO
3
.
mL of titrant x 10 = gpg CaCO
3
Range
0 to 10 gpg CaCO
3
0 to 20 gpg CaCO
3
Smallest Increment 0.1 gpg in the 0-10 gpg range
0.2 gpg in the 0-20 gpg range
Analysis Method
Acid titration using phenolphthalein
and bromophenol blue
Sample Size
5 mL and 10 mL
Number of Tests 100
total
and 100
phenolphthalein
Case Dimensions
370x270x80 mm (14.6x10.6x3.1")
Shipping Weight
865 g (30.5 oz.)
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
SPECIFICATIONS
5 mL
5 mL
x 1
x 1
REFERENCES
REFERENCES
REFERENCES
REFERENCES
REFERENCES
HEALTH AND SAFETY
HEALTH AND SAFETY
HEALTH AND SAFETY
HEALTH AND SAFETY
HEALTH AND SAFETY
The chemicals contained in this test kit may be hazardous if
improperly handled. Read the relevant Health and Safety
Data Sheets before performing the test.
1987 Annual Book of ASTM Standard
, Volume 11.01
Water (1), pages 151-158.
Official Methods of Analysis
, A.O.A.C., 14
th
Edition, 1984.
Standard Methods for the Examination of Water and
Wastewater
, 18
th
Edition, 1992, pages 445-446.
10 mL
