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Glaswarenfabrik Karl Hecht
Lenz-Laborglas GmbH & Co. KG
Lenz-Laborglas GmbH & Co. KG
Chromatographic columns, DURAN® tubing
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.
Lenz-Laborglas GmbH & Co. KG
Lenz-Laborglas GmbH & Co. KG
Chromatographic columns, PTFE stopcock, DURAN® tubing
Made of DURAN® tubing. Chromatography columns with sintered frit (porosity 0), NS socket and PTFE stopcock.
Lenz-Laborglas GmbH & Co. KG
Lenz-Laborglas GmbH & Co. KG
Chromatographic columns, with beaded rim and PTFE stopcock, DURAN® tubing
Made of DURAN® tubing. Chromatography columns with sintered frit, porosity 0.
ISOLAB Laborgeräte GmbH
ISOLAB Laborgeräte GmbH
Chromatographic columns, PTFE- / or Valve Stopcock, borosilicate glass 3.3
Chromatography columns with socket and with frit. Manufactured from borosilicate glass 3.3 which is resistant to heat and almost all chemicals. NS necks are in compliance with DIN 12242 standards.
Macherey-Nagel GmbH & Co. KG
Macherey-Nagel GmbH & Co. KG
Glass Wool, quartz wool, glass fiber wadding
Glass wool, quartz wool and glass fiber wadding are, e.g., used for GC liners, packed GC columns etc.
Macherey-Nagel GmbH & Co. KG
Macherey-Nagel GmbH & Co. KG
Seasand for Chromatographic columns
Acid washed, calcined. Pack of 1000 g.
Lenz-Laborglas GmbH & Co. KG
Lenz-Laborglas GmbH & Co. KG
Chromatographic columns, with beaded rim, DURAN® tubing
Made of DURAN® tubing. With PTFE stopcock and retaining device. With indentations above the stopcock for placing a cotton plug.
Lenz-Laborglas GmbH & Co. KG
Lenz-Laborglas GmbH & Co. KG
Chromatographic columns, valve stopcock, DURAN® tubing
Made of DURAN® tubing. Chromatography columns with sintered frit (porosity 0), NS socket and needle-valve stopcock (bore 0 - 2.5 mm).
Macherey-Nagel GmbH & Co. KG
Macherey-Nagel GmbH & Co. KG
Florisil® adsorbent for low pressure column chromatography
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.
Macherey-Nagel GmbH & Co. KG
Macherey-Nagel GmbH & Co. KG
Aluminium oxide adsorbents for low pressure column chromatography
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.
Macherey-Nagel GmbH & Co. KG
Macherey-Nagel GmbH & Co. KG
Silica adsorbents for low pressure column chromatography
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.