This invention relates to co-crystals and salts of CCR3 inhibitors of formula 1,pharmaceutical compositions containing the same, and methods of using the same as agents for treatment andor prevention of diseases related with the CCR3-receptor. Jacks are provided to immobilize and level the support base at a desired location. The invention still further provides a composition comprising a combination of a methoxysalicylaldehyde derivative, preferably 3-methoxysalicylaldehyde, and 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid, and for the use of such composition in pharmaceutical formulations as a radioprotectant. The retaining device includes a base section for mounting to the upper section and pressing downwardly against the lower section. The filtering body is characterized in that the joint comprises a plurality of joint portions locally adapted to optimize the attenuation of thermomechanical stresses liable to be generated in the filtering body. The moments when the rotor passes through a reference position are detected, the period of the oscillator is adapted in such a manner that the reference position passages occur at a predetermined phase of the oscillator, and the position of the rotor is derived from the oscillation of the oscillator between the reference position passages.