1.05568

TLC aluminum sheets, Kieselguhr F₂₅₄

pkg of 25 sheets, sheet L × W 20 cm × 20 cm, aluminum support

• 别名: Kieselguhr Coated TLC Plates
• 分類程式碼代碼: 41115711
• NACRES: NB.21

属性

• 材料: aluminum support; silica gel 60 matrix
• 品質等級: 100
• 特點: binder Organic Polymer; fluorescent indicator
• 包裝: pkg of 25 sheets
• 技術: thin layer chromatography (TLC): suitable
• 層厚度: 200 μm
• 薄片長度 × 寬度: 20 cm × 20 cm
• 粒徑: 10-12 μm
• 孔徑: 60 Å medium pore diameter
• 儲存溫度: 2-30°C

说明

一般說明

25 Aluminium sheets 20 x 20 cm

Precoated Kieselguhr or mixed Silica gel/Kieselguhr plates are only of small importance nowadays. Kieselguhr layers are used like cellulose layers for the TLC separation of polar and moderately polar substances. Polyamide, on the other hand , is used for the separation of flavonoids and other phenolic substances.

聯結

Replaces: 5568-7; 5568

分析報告

Layer thickness: 170 - 220 µm
Deviation of layer thickness per plate: ≤ 30 µm
Chromatographic testing:
amino acid test
hRf-values
- β-alanine, short-time test:
25 - 30
- L-alanine, amino acid test: 45 - 55
- DL-Valin, amino acid test: 75 - 85
- L-leucine, amino acid test: 85 - 95
Typical value determined on a sheet
Eluent: n- propanol/ water (80/20 v/v)