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| Producent | Macherey-Nagel | | Part Number | 163UK-4004880 (163UK4004880) |
| Specifications | RP-18 W/UV254 octadecyl-modified nano silica layers for HPTLC, Type ALUGRAM® Glass plates RP-18 W UV254 , Plate format |
| Unit Price | 268,49 EUR |
| Minimum Order Quantity | 1 |
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| Description | RP-18 W/UV254 octadecyl-modified nano silica layers for HPTLC Linear- K: give rapid, precise recognition. The pre-adsorbent layer is thicker than the silica layer and functions like a sponge that pre-concentrates the sample before it reacts with the silica layer. This allows the user to apply sample volumes that would not be possible with standard TLC-plates. The symbol for silica gel is K (from the German Kieselgel). followed by a classification designation: - K5 10-12µm silica, with pore size 150 Å - K6 10-12µm silica, with pore size 60 Å - High-performance silica is prefixed with the letters HP: HP-K 4.5 µm silica, pore size 60 Å - Reversed-phase plates with a bonded alkyl group are represented by a K, followed by the length of the alkyl chain KC-18 10-12µm Silica 60 Å, octadecyl bonded phase Further identification information for a particular plate can be found from the following letter codes: - L pre-adsorbent layer for the easier application of larger volumes. Compresses each sample into a narrow horizontal band, so also known as Linear-K, prefix L. - D channelled plates with separate lanes. 2mm clear glass channels separate the individual sample lanes to prevent the samples becoming mixed, so D for Division. - F fluorescent indicator: fluorescent plates glow bright green under UV light. Samples that absorb UV at 254nm are recognised by fluorescence quenching. - M microscope slide, plate size 25/75mm. - P preparative layer. Has a thickness of 500µm or 1000µm for large samples. These letter codes enable easy, rapid identifcation of all TLC plates, for example PLK6DF = preparative K6 silica 60 Å pore diameter, separate lanes, fluorescent indicator and pre-adsorbent layer. ALUGRAM® base material: Nano-K silica 60, specific surface (BET) ~500m²/g, mean pore size 60Å, specific pore volume 0.75ml/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 (254nm); 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. Type ALUGRAM® Glass plates RP-18 W UV254 Plate format 5 x 20 cm Gel thickness 0.25 mm |
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