Challenge Testing (ISO 17025 Accredited)

Cosmetics, OTC, Sanitizers, Pharmaceuticals, Detergents

We specialize in preservation efficacy testing, commonly known as “challenge test”. Our laboratory, has significant expertise in the Challenge Testing of cosmetics and pharmaceutical products, offering high-quality services at competitive prices. The company is serving a large segment of the Greek cosmetics industry and an increasing share of the Greek pharmaceutical industry.

Adequacy of Preservation

Cosmetics need not be sterile, however, they must not be contaminated with microorganisms which may be pathogenic, and the density of non-pathogenic microorganisms should be low. In addition, cosmetics should remain in this condition when used by consumers.

Preservation Efficacy Test - Challenge test

Each cosmetic and pharmaceutical product should be tested during product development for adequacy of preservation against microbial contamination which may occur under reasonably foreseeable conditions of consumer use. The products that are desired to be protected (OTC, cosmetics, laundry detergents, dish detergents) are prepared with preservative and then inoculated separately with strains of bacteria and fungi. The samples are stored, then examined for survivors and these numbers recorded. Parameters vary depending on the protocol used (EP, USP51, Mixed Culture, Re-inoculation, CTFA, Orth)

Reports

Report may be the standard or customized.

Test duration (EP, USP) is 30 days.

Reports are available within 35 days from sample receipt.

In case of negative readings clients are informed asap, temporary reports may be issued upon request.

Sample quantity from 90g to 150g.

Documentation should mention the exact product name, company name, address, phone, fax, e-mail and VAT number.

A 24h courier transport service is offered. Contact us to arrange sample transport details.

We are confident that you will find our services competent and our prices competitive. You are invited to contact us for any further information.

Standard test (EP:European Pharmacopoeia, USP:United States Pharmacopoeia)

Bacteria	Yeasts-Moulds
St. aureus ATCC 6538,	C. albicans ATCC 10231,
Ps. aeruginosa ATCC 9027,	A. niger ATCC 16404).