Glass TLC plate, silica gel coated with flourescent indicator F254. The silica gel TLC plates come in a quantity of 25 size 20x20 cm for thin layer chromatography applications.

Specific surface area (according to BET; 5-Pt. measurement): 480 - 540 m²/g

Pore volume (N₂-isotherm): 0.74 - 0.84 ml/g

d 50 (laser diffraction, size distribution): 9.7 - 11.7 µm

Layer thickness: 210 - 270 µm

Deviation of layer thickness per plate: ≤ 35 µm

Chromatographic testings:

A) Colour test

hRf-values

- bleu vif organol, colour test, lipophile:

11 - 25

- Ceres Black G, colour test, lipophile: 34 - 48

- ceres Violet brn, colour test, lipophile: 52 - 67

separation number (colourtest, lipophile): ≥ 10.5

B) Steriod test

hRf-values

- hydrocortisone, steroid test:

25 - 37

- Reichstein S, steroid test: 37 - 49

- methyltestosterone, steroid test: 42 - 54

Typical value determined on a conditioned plate

Eluent A) Toluene (45% rel.humidity)

Eluent B) Ethyl acetate/Toluene (95+5 v/v; 20% rel.humidity)