Flash Pure ecoflex cartridges are packed with quality silica designed to help maximize cost and performance on any Flash purification instrument. Flash Pure ecoflex cartridges are the best economic solution with maximum flexibility in media and hardware. Ecoflex silica cartridges contain irregular 50 ?m silica, while bonded phases such as C18, amino and Diol contain spherical 50 ?m silica. Ecoflex Alumina cartridges contain irregular 60 ?m neutral, basic or acidic media. Flash Pure ecoflex Lok cartridges use a luer lock connection for secure fitting on systems requiring this connection.