1.05738

TLC plates, Kieselguhr F₂₅₄

pkg of 25 plates, plate L × W 20 cm × 20 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 25 plates
• 기술: thin layer chromatography (TLC): suitable
• 레이어 두께: 200 μm
• 플레이트 길이 × 너비: 20 cm × 20 cm
• 입자 크기: 10-12 μm
• 공극 크기: 60 Å medium pore diameter
• 저장 온도: 2-30°C

설명

일반 설명

25 Glassplates 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.

결합

Replaces: 5738-7; 5738

분석 메모

Layer thickness: 180 - 220 µm
Deviation of layer thickness per plate: ≤ 35 µm
Chromatographic testing:
amino acid test
hRf-values
- β-alanine, short-time test:
20 - 30
- L-alanine, amino acid test: 40 - 50
- DL-Valin, amino acid test: 75 - 85
- L-leucine, amino acid test: 88 - 95
Typical value determined on a plate
Eluent: n- propanol/ water (80/20 v/v)