Abstract: The invention relates to a portable device for estimating at least one parameter characteristic of a polymer material, characterized in that the device comprises at least one infrared source, each infrared source being capable of emitting towards the polymer material a spectral line, representing maximum emission energy, selected in one of the wavelengths 10 ?m, 9.5 ?m, 7.2 ?m, 6 ?m, 3.5 ?m, 2.7 ?m or in one of the wave numbers 1,000 cm?1, 1,050 cm?1, 1,350 cm?1, 1,700 cm?1, 2,900 cm?1, 3,700 cm?1, at least one infrared detector, capable of receiving infrared radiation, which is reflected by the polymer material in response to the spectral line, a unit for determining the parameter characteristic of the polymer material as a function of the energy present in said spectral line in the infrared radiation, having been reflected by the polymer material and having been received by the infrared detector.

Abstract: The invention relates to a portable device (1) for estimating at least one parameter characteristic of a polymer material, characterized in that the device comprises at least one infrared source (101), each infrared source (101) being capable of emitting towards the polymer material a spectral line, representing maximum emission energy, selected in one of the wavelengths 10 ?m, 9.5 ?m, 7.2 ?m, 6 ?m, 3.5 ?m, 2.7 ?m or in one of the wave numbers 1000 cm?1, 1050 cm?1, 1350 cm?1, 1700 cm?1, 2900 cm?1, 3700 cm?1, at least one infrared detector (102), capable of receiving infrared radiation (112), which is reflected by the polymer material (M) in response to the spectral line, a unit for determining the parameter characteristic of the polymer material (M) as a function of the energy present in said spectral line in the infrared radiation (112), having been reflected by the polymer material (M) and having been received by the infrared detector (102).