1.05568

TLC aluminum sheets, Kieselguhr F₂₅₄

pkg of 25 sheets, sheet L × W 20 cm × 20 cm, aluminum support

• Sinonimo/i: Kieselguhr Coated TLC Plates
• Codice UNSPSC: 41115711
• NACRES: NB.21

Proprietà

• Materiali: aluminum support; silica gel 60 matrix
• Livello qualitativo: 100
• Caratteristiche: binder Organic Polymer; fluorescent indicator
• Confezionamento: pkg of 25 sheets
• tecniche: thin layer chromatography (TLC): suitable
• Spessore strato: 200 μm
• Lungh. × largh. foglio: 20 cm × 20 cm
• Dimensione particelle: 10-12 μm
• Dimensione pori: 60 Å medium pore diameter
• Temperatura di conservazione: 2-30°C

Descrizione

Descrizione generale

25 Aluminium sheets 20 x 20 cm

Precoated Kieselguhr or mixed Silica gel/Kieselguhr plates are only of small importance nowadays. Kieselguhr layers are used like cellulose layers for the TLC separation of polar and moderately polar substances. Polyamide, on the other hand , is used for the separation of flavonoids and other phenolic substances.

Linkage

Replaces: 5568-7; 5568

Risultati analitici

Layer thickness: 170 - 220 µm
Deviation of layer thickness per plate: ≤ 30 µm
Chromatographic testing:
amino acid test
hRf-values
- β-alanine, short-time test:
25 - 30
- L-alanine, amino acid test: 45 - 55
- DL-Valin, amino acid test: 75 - 85
- L-leucine, amino acid test: 85 - 95
Typical value determined on a sheet
Eluent: n- propanol/ water (80/20 v/v)