1.15424

TLC plates, Silica gel 60 RP-8 F₂₅₄s

pkg of 50 plates, plate L × W 20 cm × 10 cm, glass support

• UNSPSC 코드: 41115711
• NACRES: NB.21

속성

• material: glass support; silica gel 60 matrix
• Quality Level: 100
• 특징: binder Organic Polymer; fluorescent indicator
• 포장: pkg of 50 plates
• 기술: thin layer chromatography (TLC): suitable
• 레이어 두께: 250 μm
• 플레이트 길이 × 너비: 20 cm × 10 cm
• 입자 크기: 10-12 μm
• 공극 크기: 60 Å medium pore diameter
• 저장 온도: 2-30°C

설명

일반 설명

50 Glass plates 10 x 20 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.

결합

Replaces: 15424-6; 15424

분석 메모

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:
68 - 74
B) Steroid test
- methyltestosterone, steroid test: 45 - 55
- Reichstein S, steroid test: 65 - 75
- hydrocortisone, steroid test: 75 - 91
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)