SPESilica-based Sorbents Polymer-based Sorbents Specific Sorbents ProElut™ GLASS SPE Tube ProElut™ DNPH-Silica ProElut™ PWA-2 Select options ProElut™ PWA-2 $0.10 ProElut™ PWC Select options ProElut™ PWC $0.10 ProElut™ PWA Select options ProElut™ PWA $0.10 ProElut™ PXA Select options ProElut™ PXA $0.10 ProElut™ PXC Select options ProElut™ PXC $0.10 ProElut™ PLS Select options ProElut™ PLS $0.10