1.05738
TLC plates, Kieselguhr F₂₅₄
pkg of 25 plates, plate L × W 20 cm × 20 cm, glass support
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About This Item
UNSPSC Code:
41115711
NACRES:
NB.21
Recommended Products
material
glass support
silica gel 60 matrix
Quality Level
feature
binder Organic Polymer
fluorescent indicator
packaging
pkg of 25 plates
technique(s)
thin layer chromatography (TLC): suitable
layer thickness
200 μm
plate L × W
20 cm × 20 cm
particle size
10-12 μm
pore size
60 Å medium pore diameter
storage temp.
2-30°C
General description
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.
Linkage
Replaces: 5738-7; 5738
Analysis Note
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)
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)
Certificates of Analysis (COA)
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