The preparation of analogues of planetary and cometary surfaces for our measurements requires the use of judiciously chosen and accurately characterised materials including ice, minerals, salts and organic matter. In addition to a collection of mineral and organic materials, we have developed an ice production machine called SPIPA for Setup for Production of Icy Planetary Analogues, capable of producing rapidly a thick layer of water ice particles needed for our measurements. We have developed protocols to prepare various types of mixtures (e.g. intimate or intra- mixtures) of these ice and contaminants in a controlled and reproducible way. The surface texture of the samples is characterised using our OCTOPUS facility, for Optical Coherence Tomography Of Planetary Ultra-cold Samples, capable to image the 3D structure of a 10*10 mm area at a resolution of a few μm and down to depths of few mm. This instrument probes the same layer of the sample that is responsible for the scattering of the light, measured by our PHIRE-2 and SCITEAS setups.