Merck 109033 Schiff's reagent 500 Ml
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Merck 105559 TLC Silica gel 60 RP-18 F₂₅₄s 1 Ad
Katalog No: 105559.0001
Marka: Merck
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Merck 105559 TLC Silica gel 60 RP-18 F₂₅₄s Aluminum 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 20 size 20x20 cm for thin layer chromatography applications.
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Merck 105559 TLC Silica gel 60 RP-18 F₂₅₄s Aluminum 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 20 size 20x20 cm for thin layer chromatography applications.
| Açıklama | |
|---|---|
| Katalog Numarası | 105559 |
| Replaces | 5559-7; 5559 |
| Genel Bakış | 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. |
| Ürün Bilgisi | |
|---|---|
| HS Kodu | 3822 19 00 |
| Quality Level | MQ100 |
| Özellikler | |
|---|---|
| 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 | 160 - 200 µm |
| Deviation of layer thickness per plate | ≤ 30 µm |
| Chromatographic testings: A) Cholesterin test | |
| hRf-values - cholesterin, cholesterin test | 32 - 39 |
| B) Steroid test | |
| - methyltestosterone, steroid test | 14 - 22 |
| - Reichstein S, steroid test | 26 - 36 |
| - hydrocortisone, steroid test | 36 - 46 |
| Typical value determined on an activated sheet (120°C, 15 min) Eluent a) aceton/ water (95/5 v/v) Eluent b) aceton/ water (60/40 v/v) | |
105559.0001
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