Aijiren’s 2ML Crimp Top HPLC Vial can be used with Micro-Insert to hold a small amount of samples to be tested, or precious samples. Put the sample into the Micro-insert, put the Micro-insert into the 2ml Crimp Autosampler Vial, fix the Cap with Crimper, and then put it into the Autosampler for testing. Rated 5 /5 based on 541 customer reviews.