TLC Silica Gel60 RP18 Glass 20x20cm

Description

Catalogue Number	115389
Replaces	15389-7; 15389
Overview	RP modified plates serve two purposes: act as a pilot method for HPLC and allow to choose various solvent system for special separations. Our RP-modified silica layers are well suited for many separation challenges that unmodified silica cannot overcome. These layers use aqueous solvent systems to separate extremely non-polar substances and analyze particular polar substances that can adapt to ion-pair chromatography. What’s more, RP-modified silica layers are less dependent on atmospheric humidity. Unlike unmodified silica, RP-phases do not exhibit catalytic activity. This makes them the plates of choice for unstable substance that tend to experience oxidative degradation.

Product Information

HS Code

3822 00 00

Applications

Application

Glass TLC plates, RP-18 modified silica gel coated with flourescent indicator F254s. The RP-18 modified silica gel TLC plates come in a quantity of 25 size 20x20 cm for thin layer chromatography applications.

Storage and Shipping Information

Storage

Storage temperature: no restrictions.

Specifications

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)	9.5 - 11.5 µm
Layer thickness	200 - 270 µm
Deviation of layer thickness per plate	≤ 35 µm
Chromatographic testings:A) Cholesterin test
hRf-values- cholesterin, cholesterin test	30 - 38
B) Steroid test
- methyltestosterone, steroid test	21 - 31
- Reichstein S, steroid test	50 - 60
- hydrocortisone, steroid test	70 - 80
Typical value determined on an activated plate (120°C, 15 min)Eluent a) aceton/ water (95/5 v/v)Eluent b) acetonitrile/ water (70/30 v/v)