Microbiology Testing Services for Dietary Supplements, Cosmetics & Foods
Accurate microbiological testing to ensure product safety, regulatory compliance, and shelf stability using validated methods aligned with USP and ISO standards.
Qalitex Laboratories specializes in microbiological testing services designed to verify product safety, extend shelf life, and support regulatory compliance. Our microbiology laboratory serves dietary supplement, cosmetic, personal care, and dry food manufacturers by providing precise, timely, and fully compliant microbiological analysis.
We understand the critical role microbial analysis plays in consumer health and product quality. Our testing protocols follow USP <61> and <62>, AOAC guidelines, and FDA regulations, ensuring your products meet the strictest standards for microbial safety.
Our expertise focuses on products such as powders, capsules, herbal teas, dried foods, and cosmetic solids.
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.
Microbial Limits Testing is essential for regulatory filings, compliance, and routine quality control, confirming that your products meet required microbial safety limits before release to market.
We use culture-based methods combined with rapid microbial detection technologies to ensure accuracy and speed.
Pathogen Screening
Ensure your products are free of harmful pathogenic bacteria with sensitive, validated assays.
Our pathogen screening covers Salmonella, Listeria monocytogenes, E. coli O157:H7, Clostridium, and other pathogens relevant to your product type and market requirements. Early detection of pathogens prevents product recalls, protects consumers, and maintains brand reputation.
Microbiological testing methods include traditional culturing and rapid molecular detection where applicable.
Environmental Monitoring & Support
We provide tailored environmental monitoring programs to assess manufacturing facility hygiene and contamination risks.
Our team assists with sampling and testing of surfaces, air, and water in your production environment to ensure compliance with FDA cGMP and ISO cleanroom standards. This proactive approach supports ongoing quality assurance and risk mitigation.
Preservative Efficacy Testing (Challenge Testing)
Verify the effectiveness of preservatives in your cosmetic or personal care formulations.
Preservative efficacy testing (PET), also known as challenge testing, assesses how well a product’s preservative system inhibits microbial growth over time. This testing is vital for products with water content or that are susceptible to contamination during use, ensuring shelf life and consumer safety.
Our microbiology experts follow USP <51>, ISO 11930, and industry best practices to conduct challenge testing tailored to your formulation.
Yeast and Mold Testing
Identify and quantify yeast and mold contamination to maintain product quality and safety.
Yeasts and molds can compromise the integrity of dietary supplements, dried foods, and cosmetics by causing spoilage, off-odors, and health risks. We perform enumeration and speciation testing according to USP and AOAC methods, supporting quality assurance and regulatory compliance.
Raw Material Microbial Testing
Test your raw botanical powders, extracts, and other ingredients before production.
Raw material testing helps prevent contamination from entering your manufacturing process. We provide tailored microbial analysis to screen for pathogens and total microbial loads in raw ingredients, helping ensure the integrity of your supply chain.
Industries We Serve
Our microbiological testing services are ideal for:
Dietary Supplements (powders, capsules, tablets, extracts)
Cosmetics & Beauty Products (creams, masks, balms, powders)
Personal Care Products (soaps, lotions, deodorants)
Dry Foods & Botanicals (herbal teas, dried fruits, spices, grains)
Regulatory Standards & Quality Assurance
Qalitex Laboratories adheres to the highest standards of microbiological testing, including:
USP <61> Microbial Enumeration Tests
USP <62> Tests for Specified Microorganisms
FDA 21 CFR Part 111 cGMP requirements
ISO 17025 Accreditation standards
AOAC validated methods
Our quality system includes rigorous documentation, method validation, and proficiency testing to ensure data integrity and reliability for all your microbial analysis.
Technology & Testing Methods
We employ both classical and advanced microbiology methods:
Plate count and membrane filtration techniques
Rapid microbial detection assays (ATP bioluminescence, PCR-based pathogen screens where applicable)
Automated colony counters and incubators
Environmental sampling equipment for surfaces, air, and water
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Frequently Asked Questions (FAQ)
What types of products can you test microbiologically?
We test products such as powders, capsules, tablets, teas, dried herbs, and cosmetic solids.
Do you offer rapid pathogen testing?
Yes, alongside culture-based methods, we use rapid microbial detection techniques where applicable to speed turnaround times.
How do you ensure compliance with FDA and USP standards?
Our testing methods and quality systems are designed around USP <61>, <62>, and FDA 21 CFR Part 111, with ISO 17025–aligned lab procedures.
Can you support environmental monitoring for supplement manufacturing facilities?
Absolutely. We help design, implement, and test environmental monitoring programs tailored to your facility and regulatory needs.
How long does microbiology testing take?
Routine microbial limit and pathogen tests typically complete within 7–10 business days. Challenge testing and environmental monitoring timelines vary based on scope.
Ready to Ensure Your Product’s Microbial Safety?
Partner with Qalitex Laboratories for expert microbiology testing that supports your quality control, regulatory compliance, and consumer safety goals.
Contact us or request a quote online today.