Stability Tests

Stability tests of cosmetic and biocidal products are carried out in our laboratory. Cosmetic Products; Within the scope of the ‘Guideline on the Stability of Cosmetic Products and the Duration of Use After Opening’ prepared by the Turkish Medicines and Medical Devices Agency; Accelerated Stability Test It refers to stability / durability studies carried out under forced conditions compared to normal storage conditions in order to accelerate the chemical and physical deterioration of the cosmetic product. Long Term Stability Test It refers to stability studies in which the physical and microbiological properties of the cosmetic product are evaluated to cover the prescribed shelf life period. Open Cap Stability Test These are tests that refer to keeping the product at the storage temperature declared by the manufacturer and for a certain period of time in order to determine the duration of use after opening. For open package stability tests, the product refers to stability studies in which the physical and microbiological properties are evaluated in periods from the date of production by keeping the product unpacked in air conditioning cabinets at the storage temperature value specified on the label for the period of use after opening the product. Freeze - Thaw Durability Test It enables the detection of phase separations occurring in cosmetic products. It is tested at -20o C temperature for three cycles of 24 hours.

Stability tests are generally checked for changes in the following parameters

Physical Parameters (Ph, Density, Viscosity)

Packaging Compatibility

Sensory Changes (Smell, Colour, Appearance)

Determination of Microbial Load

Evaluation of Antimicrobial Protective Efficacy (Challenge Test)

Biocidal Products;

The stability of biocidal products can be determined by 3 different test methods: short-term stability, long-term stability, open package stability tests. Acceptable tolerance limit value in stability test procedures is accepted as maximum ± 10% over the initial value. In stability studies, the active substance content, relevant physical and chemical properties of the biocidal product before and after storage are determined. An evaluation of the observation and weight change on the packaging appearance is also performed.

Accelerated Stability Test The ambient temperatures and duration of accelerated stability test procedures in biocidal products within the scope of the ‘Regulation on the Operating Procedures and Principles of Biocidal Product Analysis Laboratories’ are specified. As a result of the test, visual changes in the products, pH value, changes depending on the amount of active substance quantification are controlled. Long Term Stability Tests In the long-term stability tests performed on biocidal products, the product is tested at 25o C for the period specified on the label. Visual changes, pH value, changes depending on active substance quantification are taken as basis for verification of test procedures. Open Package Stability (Stability Test After Opening the Lid) Open package stability is based on testing the product at 25o C for the period specified on the label and evaluating the stability of the product in accordance with the chemical and physical tests deemed necessary.

Cosmetic Products;

Within the scope of the ‘Guideline on the Stability of Cosmetic Products and the Duration of Use After Opening’ prepared by the Turkish Medicines and Medical Devices Agency; Accelerated Stability Test It refers to the stability / durability studies carried out under forced conditions compared to normal storage conditions in order to accelerate the chemical and physical deterioration of the cosmetic product. Long Term Stability Test It refers to stability studies in which the physical and microbiological properties of the cosmetic product are evaluated to cover the prescribed shelf life period. Open Cap Stability Test These are tests that refer to keeping the product at the storage temperature declared by the manufacturer and for a certain period of time in order to determine the duration of use after opening. For open package stability tests, the product refers to stability studies in which the physical and microbiological properties are evaluated in periods from the date of production by keeping the product unpacked in air conditioning cabinets at the storage temperature value specified on the label for the period of use after opening the product. Freeze - Thaw Durability Test It enables the detection of phase separations occurring in cosmetic products. It is tested at -20o C temperature for three cycles of 24 hours. Stability tests are generally checked for changes in the following parameters

Physical Parameters (Ph, Density, Viscosity) Packaging Compatibility Sensory Changes (Smell, Colour, Appearance) Determination of Microbial Load Evaluation of Antimicrobial Protective Efficacy (Challenge Test) Biocidal Products; The stability of biocidal products can be determined by 3 different test methods: short-term stability, long-term stability, open package stability tests.

Acceptable tolerance limit value in stability test procedures is accepted as maximum ± 10% over the initial value. In stability studies, the active substance content, relevant physical and chemical properties of the biocidal product before and after storage are determined. An evaluation of the observation and weight change on the packaging appearance is also performed. Accelerated Stability Test The ambient temperatures and duration of accelerated stability test procedures in biocidal products within the scope of the ‘Regulation on the Operating Procedures and Principles of Biocidal Product Analysis Laboratories’ are specified. As a result of the test, visual changes in the products, pH value, changes depending on the amount of active substance quantification are controlled.

Long Term Stability Tests In the long-term stability tests performed on biocidal products, the product is tested at 25o C for the period specified on the label. Visual changes, pH value, changes depending on active substance quantification are taken as basis for verification of test procedures.

Open Package Stability (Stability Test After Opening the Lid) Open package stability is based on testing the product at 25o C for the period specified on the label and evaluating the stability of the product in accordance with the chemical and physical tests deemed necessary.