These fully silanized silica gels share complete compatibility with all organic solvents. However, due to the extreme hydrophobic nature of the RP18 adsorbent, aqueous "wettability" is limited to approximately 60% water in the mobile phase. "Wettability" is correspondingly higher with the slightly more polar shorter chain RP series plates.
The availability of both normal phase and Reversed Phase HPTLC UNIPLATES completes HPTLC as a sensible, efficient and cost effective alternative technique for quantitative analysis. These Reversed Phase adsorbents share the features and benefits of silica gel HPTLC plates: high efficiency adsorbents, 150 µm layer thickness, and smooth surface for densitometry. In the High Performance format, Miles Scientific offers several varieties of supports. A hydrocarbon impregnated layer, similar to the analytical RPS UNIPLATE, offers complete aqueous solvent compatibility. Three non-polar bonded supports in the UNIBOND series are available: RP2, RP8, and RP18.
These fully silanized silica gels share complete compatibility with all organic solvents. However, due to the extreme hydrophobic nature of the RP18 adsorbent, aqueous "wettability" is limited to approximately 60% water in the mobile phase. "Wettability" is correspondingly higher with the slightly more polar shorter chain RP series plates.
Selectivity can be varied for a given sample by choosing a UNIBOND Reversed Phase HPTLC plate of proper non-polarity.
NOTE: Also previously sold as GRACE Reveleris RP C18 TLC Plates (PN 8625320).