Cope-LLG Catalogue 2018

1474 14. Chromatography Thin-layer chromatography/Plates GENERAL CATALOGUE EDITION 20 E & OE. ALUGRAM ® Nano-SIL unmodified Nano-silica layers for HPTLC ALUGRAM ® Nano silica 60, specific surface (BET) ~ 500m²/g, mean pore size 60Å, specific pore volume 0.75 ml/g, particle size 2 to 10 µm. Indicator: manganese activated zinc silicate with green fluorescence for short-wave UV (254 nm). Binder: highly polymeric product, which is stable in almost all organic solvents and resistant towards aggressive visualisation reagents. Narrow fractionation of the silica particles allows sharper separations, shorter developing times, shorter migration distances, smaller samples and an increased detection sensitivity compared to SIL G plates. Available as glass plates with or without fluorescent indicator (UV254). 1 MACHEREY-NAGEL Type Plate format Gel thickness PK Cat. No. cm mm ALUGRAM ® NANO-SIL G ALUGRAM ® NANO-SIL G UV254 ALUGRAM ® NANO-SIL G ALUGRAM ® NANO-SIL G UV254 5 x 20 5 x 20 20 x 20 20 x 20 0.20 0.20 0.20 0.20 50 50 25 25 4.005 044 6.227 900 6.227 899 4.005 045 1 RP-18 W/UV254 octadecyl-modified nano silica layers for HPTLC ALUGRAM ® base material: Nano-K silica 60, specific surface (BET) ~500m²/g, mean pore size 60 Å, specific pore volume 0.75 ml/g, particle size 2 to 10 µm; for preparative plates (1 mm thickness of layer) standard silica 60, particle size 5 to 17 µm, pH stability 2 to 10 indicator: acid-resistant product with a pale blue fluorescence for short-wave UV (254 nm); UV-absorbing substances apppear as dark-blue to black spots on a light-blue background; partial octadecyl modification, wettable with water, carbon content 14 %. 18-100 normal phase or reversed phase separation modes with eluents from anhydrous solvents to mixtures with high concentrations of water (see figure); the relative polarity of the eluent determines the polarity of the layer. Recommended application: aminophenols, barbiturates, preservatives, nucleobases, polycyclic aromatic hydrocarbons, steroids, tetracyclines, plasticizers (phthalates). Available as glass plates with or without fluorescent indicator (UV254). Glass plates available on request. 2 MACHEREY-NAGEL Type Plate format Gel thickness PK Cat. No. cm mm ALUGRAM ® aluminium sheets RP-18 W UV 254 ALUGRAM ® aluminium sheets RP-18 W UV 254 ALUGRAM ® aluminium sheets RP-18 W UV 254 ALUGRAM ® aluminium sheets RP-18 W UV 254 ALUGRAM ® aluminium sheets RP-18 W UV 254 4 x 8 5 x 10 5 x 20 10 x 10 20 x 20 0.15 0.15 0.15 0.15 0.15 50 50 50 25 25 7.400 375 6.901 143 4.005 046 4.005 047 6.704 046 2 7.400 375 Aluminium oxide layers for TLC Standard, rigid TLC plates in a choice of media, backing materials, and with dimension as outlined below. 3 MACHEREY-NAGEL Type Plate format Path length PK Cat. No. cm mm POLYGRAM ® aluminium oxide* ALUGRAM ® aluminium oxide* POLYGRAM ® polyester films 20 x 20 20 x 20 4 x 8 0.20 0.20 0.20 25 25 50 9.003 495 9.003 498 7.079 169 *with 254 nm UV indicator 3