TLC Kieselguhr F254 25 Aluminium sheets 20 x 20 cm

Analysis Note

Layer thickness: 170 - 220 µmDeviation of layer thickness per plate: ≤ 30 µmChromatographic testing: amino acid testhRf-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 - 95Typical value determined on a sheet Eluent: n- propanol/ water (80/20 v/v)

General description

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.

25 Aluminium sheets 20 x 20 cm

Linkage

Replaces: 5568-7; 5568