Cosmetics and domestic chemistry

Microbiological tests:
- general number of microorganisms
- Candida Albikans
- Pseudomonas aeruginosa
- Staphylococcus aureus

Disinfectants:
for general use;
for use by veterinary;
for use in medicine
active substances

Analysis of disinfection effectiveness
- fungicidal
- sporicidal
- germicidal

Cosmetics: creams and others

Sensory analysis:
Quality assessment and the characteristics of a cosmetic: adherence, consistency, uniformity, renin effect, spread, absorption, stickiness, greasiness, smoothness
Random sampling

The level of product acceptance by consumers
Hedonic scale

Comparative quality assessment – a product’s assessment in reference to the model emulsion (a reference product pointed out by client) or a competitive product
Comparative method to the standard model

Cosmetics and domestic chemistry

Physicochemical analysis of cosmetics and domestic chemistry:
- pH
- stability
- content of dry residues
- density
- identification and determination of free formaldehyde  
- determination of zinc content in cosmetics  
- identification and determination of oxalic acid and its alkali salts
- identification and determination of nitrates (III) in cosmetics  
- determination of water content using the azeotropic distillation method
- foam forming ability of 1% solution, foam durability indicator
- number of essential oils
- apparent density
- determination of a surface active substance content (soluble in alcohol)
- determination of abrasive substance content
- determination of foam forming ability
- determination of fat emulgation ability in washing baths
- plate test (determination of washing abilities)
- content of corrosive alkalis
- secreted fatty acid titres
- determination of viscosity(Hepler  viscosimeter)
- determination of foaming ability in automatic laundry washing machines
- determination of active oxygen content
- content of gliceryne
- content of active chloride
- content of thioglicolic acid
- content of chlorides
- peroxide value
- Kottstorfer number
- acid number
- neutralization value of secreted fatty acids
- content of fatty acids
- non-saponificating fat and non-saponificating substances
- solubility in EtOH
- refractive index of light  
- preservatives: parabens, phenoxyethanol, absolute formaldehyde (Bropol, DMDM Hydantoin), benzoic acid, benzyl alcohol, salicylic acid, nitrates
- vitamins: vitamin C
- components of haidyes: hydrogen peroxide  resorcinol, toluenodiamine
- pigments: metal oxides