Downloadable computer software for evaluation, interpretation and documentation of scientific and analytical data for use with elemental analyzers, total organic carbon analyzers, protein analyzers, stable isotopes analyzers and optical emission spectrometers; physical measuring devices, except for medical use, namely, electronic elemental analyzers for the determination of carbon, hydrogen, nitrogen, oxygen, sulphur and chlorine; electronic total organic carbon analyzers for testing and analyzing chemical and biological samples for the presence, absence or quantity of total organic carbon, total carbon, total inorganic carbon, total nitrogen, total phosphorus, total nitrogen bound and particulate organic carbon; electronic protein analyzers for testing and analyzing chemical and biological samples, namely, food, soil, fertilizer, and pharmaceuticals for the presence, absence or quantity of nitrogen; electronic stable isotope analyzers for testing and analyzing chemical and biological samples, namely, food, soil, fertilizer, and pharmaceuticals for the presence, absence or quantity of stable isotopes; electronic stable isotope analyzers for testing and analyzing chemical and biological samples, namely, food, soil, fertilizer, and pharmaceuticals for the presence, absence or quantity of novel isotopes, and optical emission spectrometers for the determination of metal alloys; photoelectric spectroscopy analytical devices being photo electron spectroscopy analyzers, except for medical use; analytic devices, except for medical use, namely analytical instruments for the determination of carbon, hydrogen, nitrogen, oxygen, sulphur and chlorine in the nature of elemental analyzers; total organic carbon analyzers in the nature of elemental analyzers of total organic carbon, total carbon, total inorganic carbon, total nitrogen, total phosphorus, total nitrogen bound and particulate organic carbon; stable isotope analyzers for stable isotopes and novel isotopes, and optical emission spectrometers for the determination of metal alloys; devices being apparatus for the analysis of gases; scientific apparatus, namely mass spectrometers; scientific apparatus in the nature of spectrometry devices, namely elemental analyzers for the determination of carbon, hydrogen, nitrogen, oxygen, sulphur and chlorine and their ratio to each other; total organic carbon analyzers for the determination of total organic carbon, total carbon, total inorganic carbon, total nitrogen, total phosphorus, total nitrogen bound and particulate organic carbon; stable isotope analyzers for the determination of stable isotopes and novel isotopes, and optical emission spectrometers for the determination of metal alloys.