Sterility Media and Rinsing Fluids

Sterility Media and Rinsing Fluids

Our sterility media and rinsing fluids are a critical component of your solution. They provide the highest level of quality and testing confidence, they have been formulated and tested to meet the requirements of the United States, European and Japanese pharmacopoeias. Steritest™ sterility media and rinse solutions are manufactured in an ISO 9001, environmentally controlled production center. Each lot undergoes a stringent quality control (QC) procedure, including pH, sterility and growth promotion tests according to USP, EP and JP methods. Our manufacturing approach ensures the highest level of clarity for our media and rinsing fluids, therefore improving accuracy and significantly reducing the risk of incorrect interpretation and false results.

Sterility Culture Media


Soybean-Casein Digest Medium (Trypticase Soy Broth) is suitable for the culture of both fungi and aerobic bacteria. This medium is used for sterility testing by membrane filtration or by direct inoculation. It is also used as pre-enrichment broth for nonsterile products. Compliant to the USP, EP and JP.

Fluid Thioglycollate Medium (FTM) is primarily intended for the detection of anaerobic bacteria. However, it also enables aerobic bacterial detection. This medium is used for sterility testing by membrane filtration or direct inoculation as described in the USP, EP
and JP.

Clear Thioglycollate Medium has the same growth promotion properties as the standard FTM and is compliant to the USP, EP and JP. This alternative formulation brings extra visual clarity versus the FTM which has a slight turbidity or haze. A high visual clarity medium is preferred by many users, when compared with the slightly turbid appearance of FTM.

Rinsing Fluids for Sterility Testing

Fluid A suitable as a general rinse buffer, and compatible with most samples. Excellent for dissolving or diluting samples, reconstituting commercial microorganisms, or as a transport medium for microorganisms.

Fluid D suitable for testing samples that contain lecithin or oil, and compatible with most antibiotics. Excellent for rinsing sterile pathways of devices, and typically used for rinse method testing of medical devices.

Fluid K suitable for testing samples that contain petrolatum, oils, or oily solutions. Excellent for rinsing pathways of medical devices, and for samples that are “difficult” to filter or dissolve.





Sterile Isopropylmyristate (IPM) is suitable for improving dissolution of viscous products, ointments and creams prior to membrane filtration

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