Microbiology Testing for Supplements, Cosmetics & Foods
Accurate microbiological testing to ensure product safety, regulatory compliance, and shelf stability.
Microbiology testing detects and quantifies microorganisms — including bacteria, yeast, mold, and pathogens — in consumer products to verify safety, support shelf-life claims, and meet regulatory requirements such as USP <61>/<62> and FDA 21 CFR Part 111.
Qalitex Laboratories specializes in microbiological testing services designed to verify product safety, extend shelf life, and support regulatory compliance. Our testing protocols follow USP <61> and <62>, AOAC guidelines, and FDA regulations, ensuring your products meet the strictest standards for microbial safety.
Microbial Limit Testing
Our comprehensive microbial limit tests detect and quantify total aerobic microbial counts (TAMC), total yeast and mold counts (TYMC), and specific objectionable organisms including E. coli, Salmonella, Staphylococcus aureus, and Pseudomonas aeruginosa.
Pathogen Screening
Our pathogen screening covers Salmonella, Listeria monocytogenes, E. coli O157:H7, Clostridium, and other pathogens relevant to your product type. Early detection prevents product recalls and protects consumers.
Preservative Efficacy Testing (Challenge Testing)
Preservative efficacy testing (PET), also known as challenge testing, assesses how well a product's preservative system inhibits microbial growth over time. Vital for products with water content or susceptible to contamination during use. We follow USP <51>, ISO 11930, and industry best practices.
Yeast and Mold Testing
We perform enumeration and speciation testing according to USP and AOAC methods to identify and quantify yeast and mold contamination in supplements, dried foods, and cosmetics.
Raw Material Microbial Testing
We provide tailored microbial analysis to screen for pathogens and total microbial loads in raw botanical powders, extracts, and other ingredients before production, helping ensure supply chain integrity.
Environmental Monitoring
We provide environmental monitoring programs to assess manufacturing facility hygiene and contamination risks, testing surfaces, air, and water to ensure compliance with FDA cGMP and ISO cleanroom standards.
Ensayos y métodos incluidos
- ✓ Total aerobic microbial count (TAMC)
- ✓ Total yeast & mold count (TYMC)
- ✓ Pathogen detection (E. coli, Salmonella, Listeria)
- ✓ Preservative efficacy testing (PET)
- ✓ Yeast & mold enumeration
- ✓ Raw material microbiology
Normas y conformidad regulatoria
- USP <61> Microbial Enumeration
- USP <62> Specified Microorganisms
- USP <51> Antimicrobial Effectiveness
- ISO 11930
- FDA 21 CFR Part 111
- AOAC validated methods
Sectores que atendemos
- Dietary supplements
- Cosmetics & beauty products
- Personal care
- Dry foods & botanicals
- Amazon FBA sellers
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What microbiology tests does Qalitex perform?
Qalitex performs total aerobic microbial count (TAMC), total yeast and mold count (TYMC), pathogen detection for E. coli, Salmonella, Listeria, Staphylococcus aureus, and Pseudomonas, as well as preservative efficacy testing (PET) per USP <51> and ISO 11930.
What is preservative efficacy testing (PET)?
Preservative efficacy testing, also called challenge testing, evaluates whether a product's preservative system can inhibit microbial growth throughout its shelf life. Qalitex performs PET per USP <51> and ISO 11930 standards for cosmetics, supplements, and personal care products.
Which standards does Qalitex follow for microbiology testing?
Qalitex follows USP <61> for microbial enumeration, USP <62> for specified microorganisms, USP <51> for antimicrobial effectiveness, ISO 11930, FDA 21 CFR Part 111, and AOAC validated methods for all microbiology testing.
Páginas de ensayos especializados
Microbiology Testing Near Irvine & San Diego, CA — ISO 17025 Accredited Lab
microbiology testing near me
Microbiology Testing for Cosmetics — Expert Lab Services
microbiology testing for cosmetics
Microbiology Testing for Dietary supplements — Expert Lab Services
microbiology testing for dietary supplements
Microbiology Testing for Quality control
microbiology testing for quality control
Microbiology Testing for FDA compliance
microbiology testing for FDA compliance
Microbiology Testing for Amazon listing approval
microbiology testing for Amazon listing approval
Por qué las marcas eligen Qalitex para microbiology testing services
Entrega en 48 h
CoA firmado en 48–72 horas
Acceso directo al científico
Hable con el químico que realiza sus ensayos
Sin pedido mínimo
1 SKU o 100 — la misma calidad
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MicrobiologyWater Activity Testing: The Microbial Risk Metric Most Supplement Brands Are Ignoring
Water activity (Aw) predicts microbial contamination risk more accurately than moisture content alone. Here's what supplement and food brands need to know.
MicrobiologyMicrobial Testing for Herbal Supplements: Why USP <61> and <62> Aren't Optional
Herbal supplements carry higher microbial risk than synthetic nutrients. Learn what USP <61> and <62> test for, acceptance criteria, and how to build a compliant protocol.
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Solicitar presupuesto →Aviso legal: Los resultados de los ensayos proporcionados por Qalitex Laboratories son datos analíticos destinados a fines de control de calidad. No constituyen asesoramiento legal, regulatorio ni de conformidad. Los clientes son los únicos responsables de garantizar que sus productos cumplen todas las normativas federales, estatales y locales aplicables.