Monday, September 30, 2013
Sunday, September 29, 2013
SUPER INFECTION
Super infection, according to Dorland’s illustrated is a
condition produced by sudden growth of a type of bacteria, different from the
original offenders in a wound or lesion under treatment.
In virology, super infection is the process by which a cell
that has previously been infected by one virus gets confected with another
virus at a later point in time. In medicine, super infection is an infection,
especially
DRUG RESISTANCE
Drug resistance is the reduction in effective of a drug in
curing a disease or improving a patient’s symptoms when the drug is not
intended to kill or inhibit a pathogen then the term is equivalent to dosage
failure or drug tolerance. More commonly the term is used in the context of
diseases caused by pathogens.
Pathogens are said to be drug resistant when drug meant to
neutralize then have reduced effect.
CHEMOTHERAPEUTIC INDEX
Chemotherapeutic agents need to act at a concentration that
can be tolerated by the tissues of the host and therefore they must have a
selective toxicity for micro organism compared with the host.
This selective toxicity expressed in terms of the
“Chemotherapeutic Index” that compress the maximum dose that can be tolerated
by the host without causing death (The maximum tolerated dose) with the minimum
Friday, September 27, 2013
EXHIBIT BATCH VS PILOT BATCH
Exhibit batch is one which can be manufactured in production
plant or even in pilot plant which have similar equipments such as in
production facility. An exhibit batch is also called LATE PILOT BATCH which is
used to provide the major stability data as per ICH guidelines to submit for an
ANDA application.
Thursday, September 26, 2013
PREVENTION OF CROSS-CONTAMINATION DURING PROCESSING
Line
clearance should be performed as per SOP & check list and recorded.
·
Check
for absence of any starting materials, products, product residues, documents of
previous product.
·
Wherever
possible adopt “Closed system” while handling materials.
·
Processing
of only one material at a time in same cubicle.
SOP FOR BURSTING STRENGTH TESTER
Objective
To provide
a procedure for the operation of bursting strength tester.
Scope
Applicable
to the bursting strength tester in quality control department.
PRINCIPLE AND CALIBRATION OF ULTRAVIOLET AND VISIBLE ABSORPTION SPECTROPHOTOMETRY
Ultraviolet
and visible absorption spectrophotometry is the measurement of the absorption
of monochromatic radiation by solution of chemical substances, in the range of
185 nm to 380 nm, and 380 nm to 780 nm of the spectrum, respectively.
The
magnitude of the absorption of a solution is expressed in terms of the
absorbance, A, defined as the
CALIBRATION OF UV/ VISIBLE SPECTROPHOTMETER
Ensure that
the connection of the instrument are proper.
Control
of absorbance
Potassium
dichromate solution:
Dry a
quantity of potassium dichromate by heating to constant weight at 130°C. Weigh
& transfer accurately
CALIBRATION OF FT-IR SPECTROPHOTOMETER
Check that
all the connections of the instrument are proper.
Ensure that
printer is attached to the instrument.
Attach
sample compartment.
Log in the
software.
CALIBRATION OF DISINTEGRATION TEST APPARATUS
A)
Number of cycles (With a constant frequency of 29 to 32) per minute:
1.
Record
the frequency of moving up and down of the basket rack assembly, in a given
time as shown below.
Start Time
(Mins.)
|
End Time
(Mins.)
|
Side A (Left hand side of the
operator).
|
Side B (Right hand side of the
operator).
|
||
No. Of cycles (A)
|
No. Of cycles per min. (A/5)
|
No. Of cycles (B)
|
No. Of cycles per min. (B/5)
|
||
0
|
5
|
||||
15
|
20
|
||||
30
|
35
|
||||
45
|
50
|
||||
60
|
65
|
CALIBRATION OF BROOKFIELD VISCOMETER
Procedure:
Ensure that
all the connection of the instrument is proper.
Turn the
viscometer ON.
Take out
the viscosity standard solution in 500ml beaker, adjust the temperature to 25°
C. Attach the
ATOMIC EMISSION SPECTROMETRY
The
technique is used to determine the concentration of certain metallic ions by
measuring the intensity of emission of light at a particular wavelength by the
vapour of the element generated from the substance. The measurement of the
intensity of one of the emission lines of the atomic vapour of the element
generated from a solution of that element is the basis of atomic emission
spectrometry. The determination is carried out at the
ATOMIC ABSORPTION SPECTROMETRY
This
technique is based on the fact that when atoms, ions or ion complexes of an
element in the ground state are atomized in a flame, they absorb light at the
characteristic wavelength of that element. If the absorption process takes
place in the flame under reproducible conditions, the absorption is
proportional to the number of absorbing atoms.
ASSAY OF CALCIUM CITRATE
Reagent required
3n
Hydrochloric acid
0.05M
Disodium Edetate
Sodium
hydroxide solution
ASSAY OF CALCIUM CARBONATE
Reagent
required:
Dilute
hydrochloric acid
0.05M
Disodium Edetate
Sodium
hydroxide solution
ANALYTICAL BALANCE CALIBRATION
CALIBRATION
OF TOP PAN BALANCE
Calibration procedure:
Internal Calibration
It shall be performed as per the manufacturer’s
instructions.
Drift Check
SOP FOR CALIBRATION OF HOT AIR OVEN
1.0 OBJECTIVE
To describe the procedure for the calibration of hot air oven
2.0 SCOPE
This SOP is applicable for the calibration of hot air oven.
APPEARANCE OF SOLUTION
Clarity
of solution
Standard
Suspension
Dissolve
1.0 g of hydrazine sulphate in sufficient water to produce 100.0 ml and set
aside for about 6 hour solution add 25.0 ml of a 10.0 per cent w/v solution of
hexamine, mix well and allow to stand for 24 hours.
ANALYTICAL METHOD VALIDATION
1.
Principle
1.1
This
appendix presents some information on the characteristics that should be
considered during validation of analytical methods. Approaches other than those
specified in this appendix may be followed and may be acceptable. Manufacturers
should choose the validation protocol and
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