TLC SILICA GEL 60/KIESELGUHR F254 25 ALUMINIUM SHEETS 20 X 20 CM

Analysis Note

Layer thickness: 170 - 220 µmDeviation of layer thickness per plate: ≤ 30 µmChromatografic testings: A) colour testhRf-values - bleu vif organol, colour test, lipophile: 20 - 30 - Ceres Black G, colour test, lipophile: 50 - 60 - ceres Violet brn, colour test, lipophile: 60 - 70Typical value determined on a conditioned sheet Eluent: toluene (45% rel. humidity)B) PHB- Ester - phb-methylester, phb-ester-test: 20 - 30 - phb-ethylester, phb-ester-test: 30 - 40 - phb-propylester, phb-ester-test: 40 - 50Typical value determined on a sheet Eluent: Pentane/ glacial acetic acid (88/12 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: 5567-7; 5567