TAT (Trypton-Azolectin-Tween®) Broth is recommended for sterility testing of viscous materials, such as shampoo, cosmetics, salves, or ointments.  It is especially adapted to the sterility testing of cosmetics and pharmaceutical products, which are subject to contamination during manufacturing and use by consumers.  Preservatives are used in aqueous products to make them self-sterilizing for vegetative bacteria, yeasts, and molds.  Pancreatic digest of casein provides the nitrogen, vitamins, amino acids, and carbon in CRITERION™ TAT Broth Base.  Lecithin neutralizes preservatives in the cosmetics or pharmaceutical products, allowing bacteria to grow.  Hardy’s TAT Broth is available in many different sizes and containers.

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Reference Stock Cultures and assayed control microorganisms are designed to meet your industry’s needs!  Microbiologics® was the first company to qualify for a license to manufacture products using certified ATCC® cultures.  Under the ATCC Licensed Derivative® program, you will be assured that the cultures in Microbiologics® products meet ATCC®’s world-renowned standards for quality.  Don’t get caught using organisms whose source is not licensed by the ATCC®.  Look for the ATCC Licensed Derivative® Emblem for products derived from ATCC® cultures.

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The Dilu-Lok II™ eliminates the time and money spent on preparing your own dilution vials!  Our pre-filled dilution vials are designed especially for the pharmaceutical, and are gamma irradiated to ensure sterility.  The vials are filled to 90ml, or 99ml with 0.1% peptone water.  Each lot is meticulously tested for pH, sterility, fill volume, and toxicity.  Peptone water meets or exceeds requirements for CFTA, EPA, USP, and APHA in the cosmetic and pharmaceutical industry.  New vial design and protective packaging eliminates leaking.

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Hardy Diagnostics’ new Cosmetics and Personal Care microbiology catalog. Featuring:

• Anaerobic Microbiology
• Dehydrated Culture Media
• Environmental Monitoring
• Membrane Filtration
• Microscope
• Stains
• Inoculating Products
• Custom Media
• Prepared Culture Media
• and more!

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Letheen Agar is used for the evaluation of bactericidal activity of quaternary ammonium compounds and is formulated according to regulartory guidelines.  The medium contains beef extract and peptone to provide a nutrient rich medium supporting the growth of a variety of microorganisms.  Quaternary ammonia compounds are neutralized by lecithin while phenolic disinfectants and hexachlorophene are neutralized by Tween® 80.  Together, lecithin and Tween® 80 neutralize ethanol.  Letheen agar is specified for use by the American Society for Testing Materials (ASTM) in the Standard Test Method for Preservatives in Water Containing Cosmetics.

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