1.05568

TLC aluminum sheets, Kieselguhr F₂₅₄

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

• Synonyme(s) : Kieselguhr Coated TLC Plates
• Code UNSPSC : 41115711
• Nomenclature NACRES : NB.21

Propriétés

• Matériaux: aluminum support; silica gel 60 matrix
• Niveau de qualité: 100
• Caractéristiques: binder Organic Polymer; fluorescent indicator
• Conditionnement: pkg of 25 sheets
• Technique(s): thin layer chromatography (TLC): suitable
• Épaisseur de la couche: 200 μm
• Feuille, L × l: 20 cm × 20 cm
• Taille des particules: 10-12 μm
• Dimension de pores: 60 Å medium pore diameter
• Température de stockage: 2-30°C

Description

Description générale

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.

Liaison

Replaces: 5568-7; 5568

Remarque sur l'analyse

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)