1.05636

HPTLC plates, Silica gel 60 DIOL F₂₅₄s

pkg of 25 plates, plate L × W 20 cm × 10 cm, glass support

• Codice UNSPSC: 41115711
• NACRES: NB.21

Proprietà

• Materiali: glass support; silica gel 60 matrix
• Livello qualitativo: 100
• Caratteristiche: binder Organic Polymer; fluorescent indicator
• Confezionamento: pkg of 25 plates
• tecniche: HPTLC: suitable
• Spessore strato: 200 μm
• Lungh. × largh. lastra: 20 cm × 10 cm
• Dimensione particelle: 5-6 μm
• Dimensione pori: 60 Å medium pore diameter
• Temperatura di conservazione: 2-30°C

Descrizione

Descrizione generale

25 Glass plates 20 x 10 cm

Our NH2, CN and DIOL -modified silica sorbents are less polar then conventional silica phases, making them ideal for separating hydrophilic or charged substances. Our moderately polar cyano- and diol-modified silica plates can be used for both normal phase and reversed phase systems. An alternative to PEI cellulose, amino-modified NH2 plates provide weak basic ion exchange characteristics with special selectivity for charged compounds.

Risultati analitici

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): 5 - 7 µm
Layer thickness: 150 - 200 µm
Deviation of layer thickness per plate: ≤ 35 µm
Chromatographic testings:
A) Steroidtest, straight phase
hRf-values
- hydrocortisone, straight phase:
4 - 8
- Reichstein S, straight phase: 11 - 18
- Methyltestosterone, straight phase: 27 - 36
B) Steroid test, reversed phase
- methyltestosterone, steroid test: 48 - 68
- Reichstein S, steroid test: 58 - 78
- hydrocortisone, steroid test: 68 - 88
Typical value determined on an activated plate (120°C, 15 min)
Eluent a) petroleum benzine 40-60°/acetone (80/20 v/v)
Eluent b) acetone/water (30/70 v/v)