1.15423
TLC plates, Silica gel 60 RP-18 F₂₅₄s
pkg of 50 plates, plate L × W 20 cm × 10 cm, glass support
Sinónimos:
RP-18 F₂₅₄s Silica Gel TLC Plates
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NACRES:
NB.21
UNSPSC Code:
41115711
Servicio técnico
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material
glass support, silica gel 60 matrix
feature
binder Organic Polymer, fluorescent indicator
packaging
pkg of 50 plates
technique(s)
thin layer chromatography (TLC): suitable
layer thickness
250 μm
plate L × W
20 cm × 10 cm
particle size
10-12 μm
pore size
60 Å medium pore diameter
storage temp.
2-30°C
General description
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.
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 50 size 10x20 cm for thin layer chromatography applications.
Analysis Note
Specific surface area (according to BET; 5-Pt. measurement): 480 - 540 m²/g
d 50 (laser diffraction, size distribution): 9.7 - 11.7 µm
Pore volume (N₂-isotherm): 0.74 - 0.84 ml/g
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)
d 50 (laser diffraction, size distribution): 9.7 - 11.7 µm
Pore volume (N₂-isotherm): 0.74 - 0.84 ml/g
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)
Other Notes
Replaces: 15423-6; 15423
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