Choose Gibraltar Labs for Sterility Testing By Following Methods: Membrane filtration sterility testing method is the method of choice for the filterable. The method suitability may be performed simultaneously with the Test for sterility of the product to be examined. The test may be carried out using the technique of membrane filtration or by direct inoculation of the culture media with the product to be examined. Appropriate negative controls are included. Membrane Filtration Sterility Testing. The Membrane Filtration Sterility Test is the method of choice for pharmaceutical products. With membrane filtration, the concept is that the microorganisms will collect onto the surface of a micron pore size filter.


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The incubation period for terminally sterilized products is not less than 7 days and 14 sterility testing procedure for aseptically filled products as per IP.

If the Product is as per USP, BP, incubation period is 14 days for both terminally sterilized as well as for aseptically filled products.


Similarly prepare three SCDM positive control by inoculating approx 10 to sterility testing procedure separately with C. This paper presents the general concepts and problems associated with sterility testing as well as the various testing methodologies.

Pharmaceutical Sterility Testing

Sterility testing is an essential part of every sterilization validation. Sterility testing is an extremely difficult process that must sterility testing procedure designed and executed so as to eliminate false positive results.


False positive results are generally due to laboratory contamination from sterility testing procedure testing environment or technician error.

The testing environment sterility testing procedure be designed to meet the requirements of the United States Pharmacopeia USP in terms of viable microbial air and surface counts.

Growth media used in sterility testing must be meticulously prepared and tested to ensure its ability to support microbial growth.


Procedures for sampling, testing, and follow-up must be defined in the validation procedures. The environment should be as stringently controlled as an aseptic processing environment.

Pharmaceutical Sterility Testing - Contract Pharma

An aseptic processing environment clean room is used to dispense sterile pharmaceuticals into presterilized containers.

A clean room is generally a room that delivers laminar flow air which has been filtered through microbial retentive High Efficiency Particulate Air HEPA filters.

The room is maintained under positive pressure and has specifications for room sterility testing procedure changes per hour. An environment used for sterility testing should be similar in design to sterility testing procedure aseptic processing environment; there should be an anteroom for gowning and a separate area for the actual sterility testing.

Sterility testing should not be carried out under a laminar flow hood located within a room that is not maintained as ISO Class 5. Along with particulate testing in the environment, the laboratory must test for viable bacterial and fungal organisms ubiquitous to it. Oils and oily solutions of sufficiently low viscosity may be filtered without dilution through sterility testing procedure dry membrane.

Viscous oils may be diluted as necessary sterility testing procedure a suitable sterile diluent such as isopropyl myristate shown not to have antimicrobial activity in the conditions of the test.

Allow the oil to penetrate the membrane by its own weight, and then filter, applying the pressure or suction gradually. Wash the membrane at least three times by filtering through it each time about mL of a suitable sterile solution such as Fluid A see Diluting and Rinsing Fluids for Membrane Filtration containing a suitable emulsifying agent at a concentration shown to be appropriate in the validation of the test, for example polysorbate 80 sterility testing procedure a concentration of 10 g per L Fluid K.

Sterility Testing Procedure : Pharmaceutical Guidelines

Transfer the membrane or membranes to the culture medium or media, or vice versa, sterility testing procedure described above for Aqueous Solutions, and incubate at the same temperatures and for the same times. In exceptional cases it may be necessary to heat to not more than Filter as rapidly as possible, and proceed as described above for Oils and Oily Solutions.

If a separate sterile needle is sterility testing procedure, directly expel the syringe contents as indicated above, and proceed as directed for Aqueous Solutions.