Biotage high precision microwave vials are designed and tested to withstand pressures beyond 20 bar in a wide range of conditions. Manufactured from contaminant free microwave-safe glass. Each Biotage microwave vial has been designed for safe and efficient heating within its specified volume range. Reseal™ design means the septum reseals after it has been penetrated for repeated additions of reagents or in-situ sampling.This kit includes 50 each of vials, aluminum caps and septa. In addition 5 reusable magnetic stir bars are included.