Abstract: Sampling and analyzing at least one mixture of substances by slab chromatography or thin layer chromatography involves sampling the mixture on a non-adsorbent solid support using a sampling member to achieve precisely repeatable conditions, depositing an appropriate amount of the mixture to be analyzed on an edge zone of a chromatography plate, bringing the said edge of the chromatography plate into contact with a solvent or a mixture of solvents to cause the migration of the mixture on the chromatography plate and the separation of the constituents of the said mixture, and developing the said plate for the qualitative and/or quantitative analysis of the constituents of the mixture, by pressing that face of the support which bears the mixture against the chromatography plate until the mixture to be analyzed has essentially migrated entirely out of the abovementioned support.

Abstract: Dispensing container comprises a chamber for holding a fluid to be dispensed in the form of a long, serpentine duct of small cross section.

Abstract: Device for measuring the force required to untangle hair comprises a handle, a carding member mounted for pivotal movement about the axis of said handle, and a counter for measuring the sum of the amplitudes of successive pivotal movements of said carding member relative to said handle.SUMMARY OF THE INVENTIONIn order to compare the characteristic properties of cosmetic products such as shampoos for example, it is often necessary to compare the property of being more or less easily entangled which they impart to the hair, regardless of the form of the hair itself, whether it consists of locks, wigs, or a head of hair. It is clear that the more the application of a product or composition facilitates untangling, for example, after shampooing, the more advantageous the use of this product or composition is in practice. Up to the present it has been impossible to evaluate the property of facilitating the untangling of hair in other than a subjective manner and this has made it difficult to carry out comparisons.