3 packaging jntu pharmacy

1
TESTING OF PHARMACEUTICAL PACKAGING
MATERIALS
BY
Dr. Suman Pattanayak
Associate Professor
Department of Pharma Analysis & QA.
Vijaya Institute of Pharmaceutical Sciences for Women
B. Pharm IV year/ II Sem
DRA, IPR & Patents

QUALITY CONTROL TESTS FOR GLASSES
1) CHEMICAL RESISTANT OF GLASS CONTAINERS
A) POWDERED GLASS TEST: It is done to estimate the amount of alkali leached from the
powdered glass which usually happens at the elevated temperatures. When the glass is
powdered, leaching of alkali is enhanced, which can be titrated with 0.02N sulphuric acid using
methyl red as an indicator
Step-1: Preparation of glass specimen: Few containers are rinsed thoroughly with purified
water and dried with stream of clean air. Grind the containers in a mortar to a fine powder and
pass through sieve no.20 and 50.
Step-2: Washing the specimen: 10gm of the above specimen is taken into 250 ml conical flask
and wash it with 30 ml acetone. Repeat the washing, decant the acetone and dried after which
it is used within 48hr.
Procedure:
10gm sample is added with 50ml of high purity water in a 250ml flask. Place it in an autoclave at
121⁰C±2⁰C for 30min.Cool it under running water. Decant the solution into another flask, wash
again with 15ml high purity water and again decant. Titrate immediately with 0.02N sulphuric
acid using methyl red as an indicator and record the volume.
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B) WATER ATTACK TEST:
This is only for treated soda lime glass containers under the controlled humidity conditions
which neutralize the surface alkali and glass will become chemically more resistant.
Principle involved is whether the alkali leached or not from the surface of the container.
Procedure: Rinse thoroughly with high purity water. Fill each container to 90%of its overflow
capacity with water and is autoclaved at 121⁰C for 30min then it is cooled and the liquid is
decanted which is titrated with 0.02N sulphuric acid using methyl red as an indicator. The
volume of sulfuric acid consumed is the measure of the amount of alkaline oxides present in the
glass containers.
TESTS CONTAINER VOL.OF 0.02N
H2SO4
Powdered glass test Type I
Type II
Type III
1.0
8.5
15.0
Water attack test Type II(100ml or
below)
Type II(above
100ml)
0.07
0.02
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2) HYDROLYTIC RESISTANCE OF GLASS CONTAINERS:
Rinse each container at least 3times with CO2 free water and fill with the same to their filling
volume. Also fill & Cover the vials and bottles and keep in autoclave. Heat to 100⁰C for 10min
and allow the steam to issue from the vent cork. Rise the temp from 100⁰C to 121⁰C over
20min. Maintain the temp at 121⁰C to 122⁰C for 60min.Lower the temp from 121⁰C to 100C
over 40min venting to prevent vacuum.
Remove the container from autoclave, cool and combine the liquids being examined. Measure
the volume of test solution into a conical flask and titrate with 0.01M HCl using methyl red as
an indicator. Perform blank with water and the difference between the titration represents the
volume of HCl consumed by the test solution.
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Nominal capacity
of container (ml)
Number of containers
to be used
Volume of test solution to be
used for titration (ml)
5 or less at least 10 50.0
6 to 30 at least 5 50.0
More than 30 at least 3 100.0
TABLE 1

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3) ARSENIC TEST:
 This test is for glass containers intended for aqueous parenterals. Wash the inner and outer
surface of container with fresh distilled water for 5min.Prep test as described in the test for
hydrolytic resistance for an adequate no.of samples to produce 50ml.pipette out 10ml
solution from combined contents of all ampoules to the flask. Add 10ml of HNO3 to dryness
on the water bath, dry the residue in an oven at 130⁰C for 30min cool and add 10ml
hydrogen molybdate reagent .Swirl to dissolve and heat under water bath and reflux for
25min. Cool to room temp and determine the absorbance at 840nm.Do the blank with 10ml
hydrogen molybdate.
 The absorbance of the test solution should not exceed the absorbance obtained by repeating
the determination using 0.1ml of arsenic standard solution (10ppm) in place of test soln.
4) THERMAL SHOCK TEST:
Place the samples in upright position in a tray. Immerse the tray into a hot water for a given time
and transfers to cold water bath, temp of both are closely controlled. Examine cracks or breaks
before and after the test. The amount of thermal shock a bottle can withstand depends on its
size, design and glass distribution. Small bottles withstand a temp differential of 60 to 80⁰C and
1 pint bottle 30 to 40⁰C.A typical test uses 45C temp difference between hot and cold water.
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5) INTERNAL BURSTING PRESSURE TEST:
The most common instrument used is American glass research increment pressure tester .The
test bottle is filled with water and placed inside the test chamber. A scaling head is applied and
the internal pressure automatically raised by a series of increments each of which is held for a
set of time. The bottle can be checked to a preselected pressure level and the test continues
until the container finally bursts.
6) LEAKAGE TEST:
Drug filled container is placed in a container filled with coloured solution (due to the addition
of dye)which is at high pressure compared to the pressure inside the glass container so that
the coloured solution enters the container if any cracks or any breakage is present.
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QUALITY CONTROL OF PACKING MATERIALS
1) LEAKAGE TEST:
Fill 10 containers with water, fit with intended closures and keep them inverted at room
temperature for 24hr.The test is said to be passed if there is no signs of leakage from any
container.
2) COLLAPSIBILITY TEST:
This test is applicable to the containers which are to be squeezed for removing the contents. A
container by collapsing inward during use, yield at least 90% of its normal contents at the
required rate of flow at ambient temperature.
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3) CLARITY OF AQUEOUS EXTRACT:
 Select unlabelled, unmarked and non laminated portions from suitable containers, taken at
random. Cut these portions into strips, none of which has a total surface area of
20sq.cm.Wash the strips free from extraneous matter by shaking them with at least two
separate portions of distilled water for about 30sec. In each case and drain off the water
thoroughly.
 Thus processed sample is taken in to the flask, previously cleaned with chromic acid
mixtures and rinsed with several portions of distilled water and added 250ml dist water.
Cover the flask and autoclave at 121⁰C for 30min.Carry out the blank determination using
250ml dist water. Cool and examine the extract, it should be colourless and free from
turbidity.
4) WATER VAPOUR PERMEABILITY:
Fill 5 containers with normal volume of water and heat seal the bottles with an aluminum foil.
Weigh accurately each container and allowed to stand for 14days at a relative humidity of
60±5% and a temperature between 20 and 25⁰C.Reweigh the containers. The loss in weight in
each container is NMT 0.2%
5) TRANSPARENCY TEST:
Standard suspension preparation: 1gm hydrazine sulphate in 100ml water and set aside for
6hr.take 25ml of this solution and add 25ml of 10%w/v hexamine and stand for 24hr.
Test solution preparation: Sample is prepared by 16fold dilution of the standard suspension. Fill
5 containers cloudiness detectable when compared to water filled containers. Absorbance is
measured at 640nm and the range is within 0.37 and 0.43.
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QUALITY CONTROL OF CLOSURES
PREPARATION OF SAMPLE(SOL.-A): Wash closures in 0.2%w/v of anionic surface
active agents for 5min.Rinse 5 times with dist water and add 200ml water and is subjected to
autoclave at 119 to 123⁰C for 20 to 30min covering with aluminum foil. Cool and separate
solution from closure (soln-A).
1) STERILITY TEST:
 When treated closures are subjected to sterilization test at 64-66⁰C and a pressure of about
0.7 KPa for 24hr.
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2) Fragmentation test
For closures
for aqueous
preparations
place a vol of water
corresponding to the
nominal vol minus 4 ml
in each of 12 clean vials
close the vials with the
‘prepared’ closures & allow to
stand for 16 hours.
For closures
for dry
preparations
close 12 clean vials with
the ‘prepared’ closures.
Using a hypodermic needle
with an external diameter
of 0.8 mm inject 1 ml of
water into the vial and
remove 1 ml of air
Carry out this
operation 4 times
with new needle
each time
Pass the liquid in
the vials through a
filter with a pores
size of 0.5 µm.
No. of fragments is
NMT 10 except in the
case of butyl rubber
closures where the total
no. of fragments is NMT
15

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3)Self – sealability
• This test is applicable to closures intended to
be used with water
close the vials
with the
‘Prepared’
closures
For each closure, use a
new hypodermic needle
with an external diameter
of 0.8 mm & pierce the
closure 10 times, each time
at a different site.
Immerse the vials
upright in a 0.1% w/v
solution of methylene
blue & reduce the
external pressure by
27KPa for 10 min.
Restore the atmospheric
pressure and leave the vials
immersed for 30 minutes.
Rinse the outside of the
vials.
None of the vials
contains any trace
of coloured
solution.

4) PH OF AQUEOUS EXTRACT:
 20ml of solution A is added with 0.1ml bromothymol blue when it is added with a small amount of
0.01M NaOH which changes the colour from blue to yellow. The volume of NaOH required is NMT
0.3ml and if it is done with HCl, the volume of HCl needed should NMT 0.8ml.
5) LIGHT ABSORPTION TEST:
 It must be done within 4hrs of preparing solution A. It is filtered through 0.5μ filter and its
absorbance is measured at 220 to 360nm.Blank is done without closures and absorbance is NMT
2.0.
6) REDUCING SUBSTANCES:
 20ml of solution A is added with 1ml of 1M H2SO4 and 20ml of 0.002M KMnO4 and boil for 3min
then cool and add 1gm of potassium iodide which is titrated with sodium thio-sulphate using
starch as an indicator. Blank is done and the difference between titration volumes is NMT 0.7ml.
7) RESIDUE ON EVAPORATION:
 50ml of solution A is evaporated to dryness at 105⁰C.Then weigh the residue NMT 4mg.
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QUALITY CONTROL OF COLLAPSIBLE TUBES
1) LEAKAGE TEST:
o Water was filled in the tube and tightly closed. External surface was wiped off and tube is
kept inverted on filter paper at base. Allow to stand for 1hr.Filterpaper shows absorption at
any time during test period.
2) LACQUER CURING TEST:
A) Power of adhesion:
o Tube was spitted along the length and flattened. Cotton wool soaked in acetone was rubbed
over lacquer surface for 20min.Lacquer should not lift from surface and cotton wool shall
remain colorless.
B) Flexibility test:
o The tube was folded in such a manner that internal lacquer surface is outside. The lacquer
coating should not be peeled off when the folded position is rubbed with finger.
3) LACQUER COMPATIBILITY TEST: 10 tubes are taken for the test. Product was filled and
crimped subjected to 45⁰C for 72hr.Tubes were allowed to cool and cut lengthwise.
A) Product compatibility:
o Content should not show any discolorations or change in colour or gas formation.
B) Lacquer compatibility:
o Lifting or peeling of lacquer is checked.
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QUALITY CONTROL OF METALLIC TINS
1) DESCRIPTION:
 Metallic tins having smooth inner surface. The upper surface is sealed consists a clip to break
the seal. The lower surface is open.
2) DIMENSIONS:
 Height- Measure the height in mm of 10 metallic tin, individually from the lower surface edge
to the upper rim. Limit-Specimen metallic tins with tolerance-170mm±10mm.
3) DIAMETER:
 Inner diameter- Measure the
 inner diameter of 10 metallic tins: Limit- NLT 98mm.
 Outer diameter: Limit-NMT 105mm.
4) CLEANLINESS CHECK:
 It should not be dirty, damaged, stained or consist of any foreign particles.
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QUALITY CONTROL OF STRIP AND BLISTERS
Procedure:
3/4th of water is poured in desiccators. The strips and blisters were placed
inside the desiccators and vacuum is applied. After sometime vacuum was
released and strips, blisters were taken out. The water present over the outer
surface of the packages was wiped off with tissue paper. The contents of strips
and blister packages were removed and the presence of moisture was
checked. If there is no leakage, the contents will not be wetted. This indicates
the perfect sealing of the packages
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QUALITY CONTROL OF PAPER AND BOARD
The tests pieces of paper and board are conditioned for the tests to be carried out in
standard conditions. They are: Temperature: 23⁰C±1⁰C Relative humidity: 50%±2%
Some of the tests to be performed are
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1. Indian Pharmacopoeia, 2007, Government of Indian ministry of health
and family welfare, The Indian pharmacopoeia commission, Ghaziabad,
volume-1, 6.1, 6.2, 6.3, 599-609.
2. Indian Pharmacopoeia, 1996, Government of Indian ministry of health
and family welfare, The controller of publications, Delhi, volume-2,
Appendix-11, A-127-137.
3. Dean D. A., Evans E. R. and Hall I. H.: Pharmaceutical Packaging
Technology, Taylor and Francis, London and New York, First Indian
reprint, 2006, 5 and 73.
4. Carter S.J., “Packaging”; Cooper and Gunn’s Tutorial Pharmacy, sixth
edition, CBS publicashers and distributors, New Delhi, 2005, 133-136
and 139-140.
5. http://en.wikipedia.org/wiki/packaging_and_labelling
References

3 packaging jntu pharmacy

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