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 ìm layer thickness, and smooth surface for densitometry.

 

In the High Performance format, Analtech offers several varieties of supports. A hydrocarbon impregnated layer, similar to the analytical RPS UNIPLATE, offers complete aqueous solvent compatibility. Three nonpolar 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 nonpolarity.