半岛bd体育手机客户端 说明
一般描述
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.
50 Glass plates 5 x 20 cm
应用
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 50 size 5x20 cm for thin layer chromatography applications.
联系
Replaces: 15683-3; 15683
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): 9.5 - 11.5 ?m
Layer thickness: 200 - 270 ?m
Deviation of layer thickness per plate: ≤ 35 ?m
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)
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 50 plates |
| technique(s) | thin layer chromatography (TLC): suitable |
| 层厚度 | 250 μm |
| 板长度 × 宽度 | 5 cm × 20 cm |
| 粒径 | 10-12 μm |
| 孔径 | 60 ? medium pore diameter |
| 储存温度 | 2-30℃ |
SUPELCO
m.cnreagent.com
