The innovative mobile racks allow you to automate sample preparation steps before or after SPE, and the unique sealing caps allow for positive pressure extractions, which are more precise and robust. With the optional GX Direct Injection Module, the GX-271 ASPEC can even prepare samples and inject them directly onto your Gilson HPLC system! With so many racks and accessory configurations, the Gilson GX-271 ASPEC is one of the most versatile SPE instuments in any lab. The Gilson GX-271 ASPEC is a complete solution for your SPE workflow.