We specialize in contamination control for cosmetics, specifically in verifying preservative effectiveness in products such as body lotions, shampoos, soaps, and eye care solutions. MRA provides the highest quality testing, adhering to CTFA and USP regulatory requirements while meeting strict client deadlines.
CTFA Preservative Effectiveness (PET) Includes 5 Organisms
CTFA PET will test cosmetic for preservative effectiveness with multiple challenge organisms to determine microbial lethality over time. Rechallenge at Day 14 will add more robust methodology for overall preservative effectiveness.
Day 14 Rechallenge
CTFA Suitability Test (Neutralizer Validation) Includes 2 organisms
Additional organisms can be added per client request
TAMC & TYMC
Initial Total Count Includes Total Aerobic Microbial Count (TAMC) and Total Yeast and Mold Count (TYMC)
Total count will be performed upon sample receipt to determine overall microbial cleanliness and baseline for PET.
CTFA M-1/M-2 Suitability of the Test Method
Validation of the test method per product for CTFA M-1/M-2 includes growth promoted media for bacteria, yeast and mold, calibrated pipettes and balances and ATCC cultures. Each dilution is considered a sample.
CTFA M-1 Determination of the Microbial Count of Cosmetic Products & M-2 Examination for Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa
Testing can also be performed for:
M-1 Only or M-2 Only
Test to determine total number of bacteria, yeast and mold in product including low limit detection of objectionable organisms.
USP <1112> Water Activity (Aw) of Non-Sterile Pharmaceuticals (Solids/Oils/Creams)
Application of water activity for determination of potential microbial growth proliferation.
Microbiology Research Associates, Inc. (MRA) offers personalized microbiology consulting, research and testing services to the pharmaceutical, cosmetic, medical device, biotechnology, and health care industries.
Microbiology Research Associates, Inc.
33 Nagog Park, Acton, MA 01720
Phone: (978) 263-2624
Fax: (978) 263-2786 firstname.lastname@example.org