What is the difference between Strata Florisil and Strata Silica?

Both Strata Florisil and Strata Silica are used for normal phase extractions from non-aqueous matrices. 

Strata Florisil is activated magnesium silicate (silica impregnated with Mg²⁺) used commonly for low to mid polarity, halogenated compounds.  It is less polar and less acidic than Strata Silica.