Use Thermo Scientific™ SureSTART™ performance level 3 inserts with 2 ml vials when analyzing < 2 ml samples to maximize injection volume. These glass inserts have a low total volume of < 400 μl, with a minimum residual volume of 2 µl. When placed and sealed in a 2 ml vial, microsamples can be used in conventional autosampler trays. Choose from Polyspring conical, Pulled-Point conical, or flat-bottom insert formats. Conical inserts are most effective with residual volumes of 2 to 4 μl. These inserts have a performance level of 3, which means they protect your most valuable samples and provide consistent, reproducible results for your most demanding analyses. They are specification certified to ensure their physical dimensions and meet all US, EU and JPN Pharmacopoeia requirements.