Illinois Institute
of Technology
UNIVERSITY LIBRARIES
I AT 418
Marx, W. L.
A study of the effect of
temperature and pressure on
For Usa In Librrry
*v ■**»«
: : 2 ; :
A STUDY OF THE EFFECT OF
TEMPERATURE AND PRESSURE
Oil THE CARBONATION OF WATER.
A THESIS
PRESENTED BY
WALTER L. MARX
TO THE
PRESIDENT AND FACULTY
OF
ARMOUR INSTITUE OF TECHNOLOGY
FOR THE DEGREE OF
CHEMICAL ENGINEER
-19 16-
ILLINOIS INSTITUTE OF TECHNOLOC
PAUL V. GALVIN LIBRARY
;35 WEST 33RD STREET
CHICAGO, IL 60616
^2-^^
%n^- .
Q&M.
-
TABLE OF CONTENTS
Page
Introduction 1
The Process of Carbonating and bottling water... 3
Collecting of Samples 7
Pressure Tests 9
Air Content Analysis 12
Calculations 16
Discussion of Results 17
Tabulated Results 25
Chemical Analysis of Ifater 39
Bibliography 40
Graphic Representation of Results 41
26424
A STUDY OF THE EFFECT OF
TEMPERATURE AND PRESSURE
ON THE CARBONATION OF WATER.
The carbonating industry, although not of recent
origin, is still in its infancy as far as technical know-
ledge of the subject is concerned.
Statistics show that less than three per cent of
the one hundred thousand bottling concerns in this country
employ technically trained men. Almost complete chaos seems
to exist in the minds of the great majority of bottling
plant operators as far as scientific control of their
process is concerned, and consequently a non-uniform product
ranging from a non-palatable one to one of passable quality
is thrust upon the public.
A great majority of the bottling plant operators —
either on account of their indisposition to add the extra
expense of a refrigerating system, or on account of their
ignorance of the very important factor that temperature
plays in the manufacture of a perfectly carbonated
product — do not take the trouble to refrigerate their
water, but simply carbonate it at whatever temperature
they obtain it from their supply line.
Pressure alone will not produce a perfectly car-
bonated product if the temperature of the water during the
impregnation period is above a certain limit.
It has long been known by bottlers and by
connoisseurs of carbonated water that the palatability of
a carbonated beverage increases with age, and that a bottle
of carbonated water will show a finer degree of combination
between the carbon dioxide gas and the water six months or
a year after it was carbonated than on the day that it was
bottled.
Bottlers have also realized for a long time that
they can obtain a finer degree of carbonation when bottling
large size bottles, such as quarts, than they can when
bottling small bottles, such as splits.
Both of the foregoing phenomena have been
accepted as facts, and little or no effort has been made
to ascertain the real underlying cause.
It was with this end in view that the author
set out to determine, from a scientific standpoint, the
factors which influence the degree of combination
between the carbon dioxide gas and the water.
The author worked on the theory that a maximum
amount of carbonic acid ( H2C03 ) present in the water
- 2 -
produced a carbonated beverage of maximum quality.
The improper elimination of air from the car-
bonated water is to a very great extent instrumental in
the manufacture of an imperfect product. At an ordinary
temperature the pressure of air will not alone prevent
the absorption of its own volume of carbon dioxide gas,
but will represent twenty times the volume of the latter,
due to their relative solubilities in water.
In conducting the research work, in order to
determine the effect of temperature, pressure and time
of storage on the degree of carbonation of the carbonated
product, the author tested over twelve hundred bottles
for bottle pressure and air content during a period of
five months.
The carbon dioxide gas used was made from
sodium bicarbonate and forty-two percent commercial
sulphuric acid. The gas was then passed through two water
purifiers in order to wash out any sulphuric acid or
suspended material, and then through a potassium perman-
ganate purifier in order to remove hydro-carbons which might
be present. From the latter purifier the gas passed to a
gasometer and was then ready for use.
- 3 -
The water was pumped from the spring through
a block tin pipe to a nine hundred gallon glass lined
supply tank on the second floor of the plant; from this
tank the water gravitated through a series of refrigerat-
ing coils to the carbonator.
A Twitchell double pump carbonator was used
for impregnating the water with the carbon dioxide gas.
A description of this type of machine may be best given
by tracing the passage of the water and the gas from the
outlet of the refrigerating coils to the outlet of the
carbonator.
In the illustration on the opposite page the
refrigerating coils have been omitted between the gasometer
and the carbonator, on account of the lack of space.
The outside shell of the gasometer is c'omposed
of galvanized sheet iron and is filled about two thirds
full of water, which acts as a seal for the gas. In the
illustration, part "8" shows the gasometer bell which is
made of tin lined sheet copper. This bell is counter-
weighed by means of the weight "4". As the gas passes
from the generator through the purifiers into the gasometer
inlet Ml" the bell "8" rises. As soon as the carbonator
has been put into operation, the gas is pumped from the
- 4 -
gasometer through the outlet "3" and passes through the
gas refrigerating coils to the carbonator through the
connecting pipes "h" and "f". The pipe line "f" conducts
the gas from the single supply line "h" to both pumps, one
on either end of the carbonator.
The mechanisms on both ends of the carbonator
are identical in construction, and for this reason an
explanation of one end will suffice for an understanding
of the machine.
The water supply line is not shown in the
illustration, but is practically the same as the gas supply
lines "h" and "f". The water enters the water box at the
rear of the carbonator through the inlet "k". The height
of the water in this reservoir is regulated by means of
a float. From the water box the water passes through the
connecting pipe ML" to the pumps, the amount pumped being
determined by the setting of the regulating valve "r". The
gas regulating valve M17" is always kept wide open.
With each stroke of the pump a charge of water
and gas is drawn from the supply lines and forced into the
expansion dome Mq"; from here it passes through the
connecting pipes, through the check valve "b" into the spray
chamber "c" . In this chamber the water is divided into
- 5 -
a very fine mist by forcing the charge through a spraying
apparatus into the carbonating cylinder "a". As the water
falls into this cylinder, it is agitated by means of an
agitator which revolves on the shaft "a7M.
The pressure within the carbonating cylinder, as
shown by the pressure gauge "s", is regulated by means of
the pressure regulator "z" . Any excess gas which is
forced into the carbonating cylinder passes back through a
blow back into the water box and saturates the water in the
water box at atmospheric pressure. From here the excess
gas passes through the gas return pipe, and the gasometer
inlet *2* baok into the gasometer.
When bottling at one pressure, both pumps are
discharged into one carbonating cylinder by adjusting the
distributing valves of the machine. The carbonated water
is discharged from the carbonator through the outlet
cock "v".
All of the water was filled on a Hes & Keller
counter pressure type of rotary filler. When using this
type of filler, the water is reduced in pressure after
leaving the carbonator, by means of a pressure reducing
valve before entering the filler, to twenty pounds. The
water chamber of the filler is supplied with a floating
disk, which regulates the height of the water within the
chamber.
- 6 -
As the bottles are placed on the filling spouts,
the water is allowed to flow into the "bottles by forcing
each of the twelve spouts to a downward position, thus
opening the water valves. When the bottles are full, the
pressure within the bottles and the filling chamber
become equal and the flow of the water ceases.
From the filling apparatus the bottles pass to
a crowning machine, and after being exposed to the atmos-
phere for a very brief interval they are crowned.
The crowned bottles are then put in galvanized
iron steaming trays and are passed through a testing tank.
This tank is supplied with a conveyor and is kept full of
water at a temperature of 105 degrees F. As the crowned
bottles pass through the tank, the temperature of the
carbonated product is raised and the expanding of the
carbon dioxide gas exerts a pressure of about fifty
pounds per square inch on the crown. If the latter is
defective in any way the escaping gas bubbles from the
bottle through the water of the testing tank and the
bottle is discarded.
In collecting the samples for the research
work, every possible precautionwas observed which would
in any way affect the final results. The gas in the gaso-
meter was frequently tested for purity by means of a
- 7 -
nitrometer and caustic potash solution and at no time was
found to contain less that 99.3 per cent of carbon dioxide.
The gas was also tested for sulphur trioxide "by passing a
stream of the gas through a hot solution of barium chloride,
and not even a trace of sulphur could be detected.
The pressure regulator on the carbonating cylinder
was set at 30 lbs. pressure and the carbonated water was
allowed to flow out until it registered 32 degress F. The
bi-pass valve on the carbonator was then closed, the outlet
to the filler was opened, and the carbonated water was al-
lowed to flow out of the filler through a bi-pass valve until
the constant temperature of 38 degrees F. was obtained. A
series of twelve samples were then collected at this tempera-
ture and pressure.
The pressure regulator was then set at 40 lbs. and
the same routine was followed as above without changing the
temperature.
By keeping a constant temperature of 32 degrees F.
and by increasing the pressure by 10 lbs. after each set of
samples had been collected until a carbonating pressure of
70 lbs. had been reached, the whole series of 32 degrees F.
samples were obtained.
The pressure regulator was then set tack to 30 lbs. again,
the temperature of the water was raised to 34 degrees F. , and
a series of samples were collected at this temperature.
The same routine was then followed until a series of
samples had been collected for the various pressures ranging
from 30 to 70 lbs. for the temperatures 36, 38 and 40 degrees
?.
The foregoing pressures were used in collecting the
six and one half ounce samples or splits. In collecting
samples of the twelve and twenty-four ounce bottles
the pressures used were 50 lbs., 45 lbs., 60 lbs., and
75 lbs. at the same temperature intervals as above.
During the time that the samples were collected,
the air — which was displaced from the water by the gas
during the process of carbonation — was allowed to escape
from the carbonator through the air exhaust cap "d".
The sample bottles were then stored in a room where
it was hoped that the temperature would be almost constant
throughout the year; but this condition was not realized,
as the tabulated forms of the results will show.
At the end of each month four samples, representing
every condition of temperature and pressure under which the
water was carbonated, were taken; and two were tested for
- 9 -
bottle pressure by means of a bottle pressure gauge,
an illustration of which — together with an illustration
of the nitrometer apparatus used for determining the
amount of air in the bottled product — is given on the
opposite page.
The bottle pressure testing apparatus is com-
posed of three parts: the gauge — supplied with a piercing
point, — the stuffing box, and the clamping mechanism.
The latter is screwed on to the bottle to be tested, and
the stuffing box is then clamped into place on the top of
the bottle. The piercing point of the gauge, consisting
of a tapering hollow steel tube, is then inserted in the
stuffing box; and the stuffing box nut is tightened in
order to prevent the excape of any gas and the consequent
loss of pressure. The top of the hollow tube is provided
with an outlet valve through which the gas is conducted from
the bottle to the nitrometer.
After the testing gauge has been clamped in place
on the bottle, the crown of the bottle is pierced by giving
the top of the gauge a sharp blow with the hand, and the
pressure within the bottle is registered on the gauge.
The pressure obtained in this way represents the
saturation pressure of the product within the bottle.
- 10 -
If the contents of the bottle is now thoroughly agitated,
the pressure will rise from five to fifteen pounds. This
latter pressure represents the actual pressure of the gas
within the liquid and is one of the two factors which de-
termine the real percentage of carbonation of the product,
the other factor being the temperature of the liquid.
The former is referred to by the trade as top
pressure, while the latter is called liquid pressure.
In some types of filling apparatus — known as
high pressure fillers — where the crown is clamped on the
bottle immediately after filling, while the liquid within
the bottle is still under pressure, the top pressure is
greatly in excess of the liquid pressure on account of the
entrained air.
However, in the type of filling apparatus as des-
cribed in the first part of this article, the liquid within
the bottle comes to atmospheric pressure at the filling
temperature, when the bottle passes from the filler to the
crowner. Any excessive air which may be in the bottle
during filling is expelled during the brief exposure to the
atmosphere. In this type of apparatus the top or saturation
pressure is from five to fifteen pounds less than the
liquid pressure.
- 11 -
In each case the saturation pressure was first
recorded and the contents of the bottle was then well
agitated and the liquid pressure recorded. The difference
between the two pressures was tabulated as degree
saturation at 60 degrees temperature.
Barring any abnormal bottles or any defective
crowns, it was found — after making the necessary temperature
corrections — that for any given carbonating temperature
and pressure, the saturation and liquid pressures did not
vary any during the entire time that the experiments were
conducted.
Knowing that the presence of air in the carbonated
product had a deleterious effect upon the latter, the
author worked on the theory that the reason for the product
improving with age was the displacement of the air in the
water by the carbon dioxide gas and by subsequent formation
of carbonic acid. According to the author's idea, this
displaced air would — on account of its lower specific
gravity than carbon dioxide — be forced to the top of the
bottle, and would be drawn off with the first on hundred
cubic centimeters of gas taken from the bottle for analysis.
With the arrangement of the testing apparatus, as
- 12 -
shown in the illustration, a second series of bottles were
tested for the amount of air present in the first one
hundred cubic centimeters of gas drawn off at the end of
each month.
Every precaution v*dch could possibly affect the
result of experiment was taken. The small piece of rubber
tubing connecting the pressure testing apparatus with the
nitrometer was filled with water in order to eliminate the
air in the tube. The water, which was used in the nitrometer,
was saturated with carbon dioxide at atmospheric pressure,
and a fresh supply of this water was used for each deter-
mination.
The samples of gas taken for analysis were col-
lected as follows: the bottle pressure testing apparatus
was clamped in position on the bottle to be tested, and the
free end of the rubber tubing was attached to the outlet
cock of the testing gauge. The crown of the bottle was then
pierced by forcing the tube of the apparatus down through
the crown. The pressure of the contents of the bottle in
the quiscent state was then recorded, and the outlet cock
of the pressure testing apparatus was appended. As soon as
one hundred cubic centimeters of gas had been collected in
the nitrometer, the outlet cock on the testing apparatus
was closed and the two way stop cock on the nitrometer was
- 13 -
opened, the caustic potash solution passing into the nitrometer
tube. After all of the carbon dioxide gas had been con-
sumed and the water failed to rise any higher in the
nitrometer tube, the leveling bottle was raised until the
water level in the bottle was on a level with the top of
the water column within the tube. The amount of air was then
recorded.
Another series of bottles were tested for total
air content in the following manner: the contents of the
bottles was well agitated before the crowns were pierced
and the resulting pressures were recorded. The first one
hundred cubic centimeters of gas were then analyzed for air
and the results recorded.
A representative number of samples were then
tested in the following manner in order to determine the
amount of air left in the bottle after the first one
hundred cubic centimeters of gas had been removed, so as
to compute a correcting factor for each size bottle, the
addition of which, to the results obtained from the first
one hundred cubic centimeters taken, would give the total
amount of air in the bottle.
Consecutive samples of one hundred cubic centi-
meters each were taken from each bottle until the air had
been entirely exhausted, a condition which was practically
- 14 -
obtained after ore thousand cubic centimeters of gas had
been taken off, and which was shown by the last gas sample
registering practically 100 percent carbon dioxide. The
results obtained from each bottle were then added, and the
amount of air obtained in the last nine hundred cubic centi-
meters was, in most cases, practically a constant, but was
found to vary with each size of bottle.
The average results obtained in determining these
factors are as follows:
SPLITS
p
INIS
Volume of
gas taken
End. 100
cc.
3rd. 100
cc.
4th. 100
cc.
5th. 100
cc.
6th. 100
cc.
7th. 100
cc.
8th. 100
cc.
9th. 100
cc.
10th. 100
cc.
Volume of
Volume
gas
taken
of air
2nd.
100 cc.
.84
3rd.
100 cc.
.45
4th.
100 cc.
.43
5th.
100 cc.
.41
6th.
100 cc.
.40
7th.
100 cc.
.20
8th.
100 cc.
.12
9th.
100 cc.
.10
10th. 100 cc.
.05
Total. .
. .3.00 cc.
S
QUARTS
Volume
Volume of
Volume
of air
gas
taken
of air
L95
2nd.
100 cc.
1.20
.52
3rd.
100 cc.
.70
.50
4th.
100 cc.
.65
.40
5th.
100 cc.
.60
.41
6th.
100 cc.
.60
.40
7th.
100 cc.
.40
.20
8th.
100 cc.
.35
.10
9th.
100 cc.
.20
.05
lOtn
.. 100 cc.
.10
Total. .. .3.53 cc. Total. .. .4.80 cc.
- 15 -
The results obtained were all tabulated and the
calculations made as follows:
One U.S. liquid 02. is equivalent to 29.574 cc.
The volume of water in a quart bottle therefore equals
24 x 29.574 cc. - 709.77 cc.
Recourse was then had to a table published by
W. P. Heath of Atlanta, Ga. , which gave the volumes of carbon
dioxide gas absorbed by water for different temperatures and
pressures. In this way it was found that one of the bottles
which showed a bottle pressure of 37 lbs. at 60 degress F.
contained 3.77 volumes of gas or 3.77 x 709.77 cc. or
2675.8 cc. of gas.
The first one hundred cubic centimeters of gas
contained 10.7 cc. of air; this, with the correcting factor
of 4.8 cc. added, gave 15.5 cc. as the total air content of
the bottle.
The per cent of air was then calculated as follows:
15.5 x 100 -
2675.8 -579$
The total air in each bottle was calculated in the
same manner and the results were tabulated.
The results obtained from the analysis of the
first one hundred cubic centimeters taken from the bottle
without agitating the contents were tabulated as "Air in
first 100 cc."
- 16 -
Curves were then plotted embodying all of the
results obtained during the entire series of experi-
ments.
Two sets of pressure curves were plotted for
each size of bottles, — One set having carbonating
pressures as abscissas and saturation pressures as
ordinates, and the other having carbonating pressures
as abscissas and liquid pressures as ordinates.
A set of curves was also plotted with "total
air content" as ordinates and carbonating pressures
as abscissas.
Three curves, one for each size bottle, were
plotted with "per cent of air in the first hundred
cubic centimeters at saturation pressure" as ordinates
and time of storage as abscissas. The data for the
last three curves was taken for the carbonating
temperature of 32 degrees F. and the carbonating pressure
of 60 lbs.
The nature of most of the pressure curves were
practically identical, as was also that of the "total
air content" curves. A discussion of a few of these
will therefore suffice for a thorough understanding of
the results obtained from the entire experimental work.
- 11 -
The result obtained from the analysis of the
total air in the bottle substantiated the author's
theory that the elimination or retention of air by the
water was largely instrumental in determining the
effeciency of carbonation of the product.
If the results — obtained from the analysis of
the total air in the three size bottles: quarts, pints
and splits — are inspected, it becomes evident at once
why a great deal finer degree of carbonation is
obtained in a large size bottle than in a smaller one.
The latter contained on an average of about 1.75% of air,
while the quarts contained on an average of .4%. These
amounts of air may seem to the reader to be too small to
have any dedided influence on the palatability of the
water; but — when it is taken into consideration that
each volume of air present in the water not alone dis-
places its own volume of gas, but represents twenty
times the volume of the latter — it becomes evident that
the amount of air given in the tables is. not as trivial
as what it seems at first sight.
By referring to the table of pressures on page
26, the effect of the more perfect elimination of air
- 18 -
from the quarts than from either the pints or splits
becomes evident. Both the saturation and liquid pressures
of the bottles tested show a marked increase for a
decrease in the air content, varying from a twenty-six
per cent increase of the pints over the splits to an
increase of about thirty-five per cent of the quarts over
the latter. In other words, the more perfect elimination
of air from the large size bottles than from the smaller
size bottles produced about one third more carbonation
when comparing the quarts and splits, and about a quarter
more carbonation when comparing the pints with the latter.
A study of the pressure table shows that both
the saturation and liquid pressure vary directly as the
carbonating pressures and as the volume of water
bottled, and inversely as the carbonating temperature.
Tor any given temperature, the increase in
either saturation or liquid pressures is not at all in
proportion to the increase in carbonating pressure, and
is less marked for the higher temperatures than for
the lower.
From the foregoing conclusion, it will be seen
that the pressure loss at filling is a good deal greater
for water carbonated at high temperatures and pressures
- 19 -
than for the water carbonated at low temperatures and
pressures. This latter statement must not be interpreted
to mean that the author advises the use of a low carbon-
ating pressure, but rather that the loss of pressure
when carbonating at high pressure is disproportionately
greater than when carbonating at low pressures.
The difference between the saturation and liquid
pressures, which was recorded as "amount of saturation,"
is practically constant for all sizes of bottles and
for all conditions of temperature and pressure.
After studying the data obtained from the
pressure tests, it becomes evident that the best results
are obtained when carbonating at 32 degrees F. with a
pressure of 60 to 75 lbs.
Before discussing the "air content curves" the
author wishes to explain the significance of each of
the eight columns of data given on pages 36 to 38 in-
clusive from which the air content curves were plotted.
The results are given for each of the four months
during which the work was done, and represents the averages
of the duplicate samples tested for each determination.
Each sheet shows the data obtained from one size
bottle carbonated at a given temperature and at pressures
varying from 30 to 75 lbs. for the quarts and
pint sizes and from 30 to 70 lbs for the splits.
The second column on each sheet fcives the number/
of cubic centimeters of air in the first hundred cubic
centimeters of gas taken from the bottle at liquid
pressure. The total number of cubic centimeters of air in
the bottle was obtained by adding the constant, the deriva-
tion of which was explained on page 14 — 4.8 cc. for quarts,
3.5 cc. for pints and 3.0 cc. for splits — to the results
given in the second column. The fourth and fifth column
give the liquid pressures and the temperature at which the
determination of air was made. The sixth column was obtained
by referring to the table published by H. B. Heath of
Atlanta, Ga. , which gives the volumes of carbon dioxide
gas absorbed by water at different temperatures and
pressures. The liquid pressure given in column four and the
temperatures in column five were used to obtain the
results in column six.
The figures in column seven were obtained by
dividing the total number of cubic centimeters of air, as
given in column three, by the product of the contents of
the bottle in cubic centimeters and the abstract gas volume
figures in column six, and the results multiplied by one
hundred. A sample calculation has been given on page 16.
- 21 -
The figures in column eight will be discussed
later.
A study of the tables on pages 26 to 38 shows
that the total air content of the bottled product varies
inversely as the volume of the water bottled and directly
as the carbonating temperature and inversely as the
carbonating pressures. In other words, high carbonating
pressures eliminate maximum amounts of air, while high
temperatures cause a retention of maximum amounts of air.
Air being the cause of most of the trouble in
carbonated products, the results obtained from this
research work prove that the nearest approach to ideal
results are obtained by having the carbonating temperature
as low as possible and the carbonating pressure as high
as can be obtained without making the cost of the process
prohibitive. High pressures demand large amounts of
carbon dioxide gas, a great percentage of which is lost
during the filling process; and, as this loss increases
disproportionately with the carbonating pressure, the
latter should be limited to about seventy-five pounds for
practical purposes. The last column of figures given
in the tables gives the per cent of air in the first
hundred cubic centimeters of gas taken from the bottle
- 22 -
at saturation pressure and repre sent\ the air which has
been displaced in the water by the carbon dioxide gas.
According the author's theory — on which this
part of the research work was based — the amount of air
in the first hundred cubic centimeters of gas taken from
the bottle at saturation pressure would increase directly
as the time of storage; but the results obtained were
just the opposite.
This overthrow of preexpected results proved
very puzzling to "the author until recourse was had to
the chemical analysis of the water, a copy of which is
given on page 39. The item "oxygen consumed" undoubtedly
explains the disappearance of a portion of the free
oxygen contained in the bottled product, particularly so
when the product was under fifty lbs. pressure.
Another item that was inspected was the iron
present, which was found to be present in the water as
Fe0 and most likely was oxidized to "Fe^Pz ^n "^e Presence
of oxygen under pressure.
The total air content in any given volume of
bottled water — carbonated at any given temperature and
pressure — theoretically should not vary at any time; but,
- 23 -
according to the results obtained, the total air content
diminished with each succeeding month. This phenomena
can also be explained by the oxidation of the ferrous iron
to the ferric state.
Previous to the author's taking charge of the
plant a great deal of trouble was had with the appearance
of a precipitate in the water after it had been on the
market for about a year. This precipitate was found to
be partially composed of algea, but also of other
matter which was not determined at the time. It was
discovered by the author that a very poor grade of gas
was being manufactured, due to improper elimination of
air from the apparatus, which fault has since been
remedied.
During the author's entire tennure of office
it has been his custom to determine the quality of the
carbonating gas previous to starting bottling operations,
and at no time has gas been used which contained a
prohibitive amount of air. Consequently there has not
been a single complaint on account of the appearance of
any suspended matter in the bottled product.
- 24 -
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- 38 -
CHEMICAL ANALYSIS OF WATER
Potassium Oxide
Sodium Oxide
Lithium Oxide
Phosphoric Acid Radicle
Sulphuric Anhydride
Silica
a ., M (Iron Oxide
Iron and Alumina (Alu]flina
Lime
Magnesia
Arsenic Acid Radicle
Metaboric Acid Radicle
Bromine
Iodine
Barium
Strontium
Parts per
1,000,000
4,990
14,580
Trace
None
21,840
11.800
0.071
2.029
107.550
58.932
None
Trace
None
None
None
None
Grains per
U.S. Gallon
0.29181
0.84094
Trace
None
1.27719
0.69006
0.00415
0.11865
6.28947
3.44631
None
Tracd
None
None
None
None
HYPOTHETICAL FORM OF COMBINATION
Potassium Chloride
Sodium Chloride
Sodium Sulphate
Magnesium Sulphate
Magnesium Bicarbonate
Calcium Bicarbonate
Iron Oxide
Alumina
Silica
Sodium Metaborate
Lithium Chloride
Iron
Chlorine
Nitrites
Nitrates
Free Ammonia
Albuminoid Ammonia
Hardness before boiling
Hardness after boiling
Organic and Volatile
Mineral Matter
Total Solids
Oxygen Consumed
Parts per
Grains per
1,000,000
U.S. Gallon
7.895
0.46169
1.508
0.08818
31.087
1.81795
6.517
0.38111
205.811
12.03573
310.795
18.18421
0.071
0.00415
2.029
0.11865
11.800
0.69005
Trace
Trace
Trace
Trace
0.050
0.00292
4.556
0.27228
0.001
0.00005
None
None
0.032
0.00187
0.070
0.00409
273.600
16.00000
109.200
6.38596
20.000
1.16959
335.000
19.59064
355.000
20.76023
1.175
0.06871
- 39 -
B I BLIOGRAPHY
J. C. GDOssmann, M. E.
The Carbonic Acid Industry.
The National Bottlers' Gazette.
The American Wine Press.
Chemical Abstracts.
- 40 -
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32" F CURVE
34° F CURVE
CARBONATING PRESSURE -LBS PER SO IN
SPLITS
36*F CURVE
CARBONATING PRESSURE-LBS PER SQ IN
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07
CARBONATING PRESSURE-LBS PER SQ IN
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38° F CURVE
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40°F CURVE
CARBONATING PRESSURE -LBS PER SQ IN
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36°F CURVE
CARBONATING PRESSURE -LBS PER 5Q IN
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ARBONATING PRESSURE! - LBS PER SQ IN
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TIME OF
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