Glass wool, quartz wool and glass fiber wadding are, e.g., used for GC liners, packed GC columns etc.
Aluminium oxides produced by dehydration of different aluminium hydroxides, e. g. hydrargillite between 400 and 500°C, activity grade I, particle size 50 to 200µm, specific surface (BET) ~ 130m²/g.
Standard silica 60, pore size ~ 60 Å; pore volume ~ 0.75ml/g; spec. surface BET ~ 500m²/g. highly porous, amorphous silicic acid in the form of hard, opalescent particles, prepared by precipitation of water glass with sulphuric acid. Silica FIA for the fluorescence indicator adsorption procedure for the determination of hydrocarbon groups in the testing of liquid fuels in accordance with DIN 51791 and ASTM D 1319-58T. The FIA method determines saturated hydrocarbons, olefins and aromatic hydrocarbons of a sample chromatographically by adsorption and desorption in a column filled with FIA silica, in the presence of a fluorescent dye mixture. Further silica adsorbentson request.
hard granular magnesia silica gel: MgO 15.5±0.5%, SiO2 84.0 ±0.5%,Na2SO4œ1.0%; 60/100 meshtypical applications: sample preparation (SPE); clean-up of pesticide residues, separation of chlorinated pesticides, extraction of steroids, sex hormones, antibiotics, lipids etc.
Pore size 1. NS necks are in compliance with DIN 12242 standards.
Made of DURAN® tubing. Chromatography columns with sintered frit (porosity 0), NS socket and needle-valve stopcock (bore 0 - 2.5 mm).
Made of DURAN® tubing. Chromatography columns with sintered frit, porosity 0.
Made of DURAN® tubing. Chromatography columns with sintered frit (porosity 0), NS socket and PTFE stopcock.
Made of DURAN® tubing. With PTFE stopcock and retaining device. With indentations above the stopcock for placing a cotton plug.
Made of DURAN® tubing. Basic chromatographic columns with indentations above the stopcock for placing a cotton plug, with NS socket, with PTFE stopcock and retaining device.
