This AxyMat™ sealing mat is for 384-well deep well plates with square wells. It is reusable and versatile. It minimizes evaporation in a wide range of temperatures in PCR and storage applications. Each "well-sealer," once punctured, will reseal itself, ensuring an airtight seal to the well. Compatible with 240ul deep well plates and 120ul deep well plates. Non-sterile. Corning Axygen® #: AM-384-DW-SQ.