Differential scanning calorimeters and structural parts thereof; differential scanning calorimeter accessories, namely, auto samplers, measuring controller in the form of a thermal analysis system network comprised of a computer, gas analyzers, laboratory photochemical reactors, computer software for the controller, sample observation cameras, electronic gas controllers for biotechnological and chemical processes, sample containers for testing liquid or solid substance; differential thermal analyzers and structural parts thereof; differential thermal analyzer accessories, namely, auto sampler, measuring controller in the form of a thermal analysis system network comprised of a computer, gas analyzers, laboratory photochemical reactors, computer software for the controller, sample observation cameras, electronic gas controllers for biotechnological and chemical processes, sample containers for testing liquid or solid substance; thermogravimetry analyzers and structural parts thereof; thermogravimetry accessories, namely, auto sampler, measuring controller in the form of a thermal analysis system network comprised of a computer, gas analyzers, laboratory photochemical reactors, computer software for the controller, sample observation cameras, electronic gas controllers for biotechnological and chemical processes, sample containers for testing liquid or solid substance; dynamic mechanical analyzers and their structural parts; dynamic mechanical analyzers accessories, namely, sample holders for analyzing solids, measuring controller in the form of a thermal analysis system network comprised of a computer, gas analyzers, laboratory photochemical reactors, computer software for the controller, sample observation cameras, electronic gas controllers for biotechnological and chemical processes, sample containers for testing liquid or solid substance; thermomechanical analyzers and their structural parts; measuring probes to measure expansion, contraction, tension or elasticity of solid samples, measuring controller in the form of a thermal analysis system network comprised of a computer, gas analyzers, laboratory photochemical reactors, auto sampler, computer software for the controller, sample observation cameras, electronic gas controllers for biotechnological and chemical processes, sample containers for testing liquid or solid substance