HPTLC Silica gel 60 RP-18 F₂₅₄s

半岛bd体育手机客户端 说明

一般描述

25 Glass plates 10 x 10 cm
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.

应用

Glass HPTLC Silica gel 60 RP-18 F???s plates. Silica gel HPTLC plates size 10 x 10 cm, 25 sheets.

联系

Replaces: 13724-5; 13724

分析说明

Specific surface area (according to BET; 5-Pt. measurement): 480 - 540 m?/g
Pore volume (N?-isotherm): 0.74 - 0.84 ml/g
d 50 (laser diffraction, size distribution): 5 - 7 ?m
Layer thickness: 150 - 200 ?m
Deviation of layer thickness per plate: ≤ 35 ?m
Chromatographic testings:
A) Cholesterin test
hRf-values
- cholesterin, cholesterin test:
11 - 23
B) Steroid test
- methyltestosterone, steroid test: 20 - 40
- Reichstein S, steroid test: 50 - 70
- hydrocortisone, steroid test: 65 - 85
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)

半岛bd体育手机客户端 性质

物料	glass support silica gel 60 matrix
质量水平	100
特点	binder Organic Polymer fluorescent indicator
包装	pkg of 25 plates
technique(s)	thin layer chromatography (TLC): suitable
层厚度	200 μm
板长度 × 宽度	10 cm × 10 cm
粒径	5-6 μm
孔径	60 ? medium pore diameter
储存温度	2-30℃