Bilgiye hızlı erişim:
Reliable analysis begins with a correct start and a traceable system.
Every sample received at Cosming undergoes an initial inspection:
The integrity of the packaging, transportation temperature, and shipping conditions are thoroughly checked.
If the sample is physically damaged or not transported under proper conditions, the customer is notified as the reliability of the results could be compromised.
Each sample is assigned a unique identification code.
Through a barcode system and digital laboratory management software, all information—such as the origin of the sample, applicable tests, and assigned personnel—is tracked transparently.
Accepted samples are stored under conditions suitable for their type (e.g., cold chain, dark environment) until analysis begins.
This system:
► Prevents mix-ups,
► Provides transparency during audits,
► Ensures traceability for retrospective result verification.
To begin testing, an initial suspension is prepared using appropriate dilution factors.
This process is conducted:
In sterile environments such as laminar flow cabinets,
Using autoclaved equipment,
And single-use sterile materials.
The initial suspension forms the basis of all microbiological tests and directly affects the quality of the analysis.
Cosmetic products often contain antimicrobial agents and preservatives. These substances can inhibit the growth of microorganisms during analysis and may lead to false-negative results.
To prevent this:
Neutralizing agents are used to eliminate these effects.
This enables the accurate detection of the actual microbial load.
This step is essential to ensure the reliability of tests, especially in products containing preservatives.
Product-specific neutralization = Accurate microbial detection
Preservatives (e.g., phenoxyethanol, benzoic acid, chlorhexidine, alcohol derivatives, etc.) are used to prevent microbial contamination in products. However, during testing, these compounds may suppress or kill microorganisms remaining in the test system, especially in highly preserved products, resulting in false negatives.
Therefore:
The neutralizing agent must be selected based on the preservatives present in the product.
Each product requires a customized neutralization protocol tailored to its formulation.
At Cosming Laboratory, we ensure the reliability of your microbiological analyses by selecting neutralizers specific to the product’s formulation.
Even Low-Level Microbial Presence Should Be Detected
Some products may contain only a very low number of microorganisms. In such cases:
Special liquid media are used to support microbial growth.
This step makes low contamination levels visible and measurable.
As a result, risks that may not be detected directly can still be identified.
Once the preparation process is complete, the samples proceed to microbiological analysis. These analyses include:
Total viable count,
Yeast and mold enumeration,
In our next Laboratory Journal entry, we will share how these test stages are performed in detail.
And pathogen screening.
At Cosming, we conduct every analytical process in compliance with TS EN ISO/IEC 17025 accreditation standards, grounding product safety in scientific and systematic foundations.
Whether for cosmetics, personal care, or cleaning products, we provide microbiological analysis services in sterile environments, with expert personnel, and traceable systems.
Stay informed about the latest developments in the industry and our company by subscribing to our e-newsletters.
Cosming Laboratuvar Bilgi Yönetim Eğitim Danışmanlık San. Ve Tic. Ltd Şti.
Get a Quote Register