Use Thermo Scientific™ SureSTART™ Performance Level 3 Inserts with 2 mL vials when analyzing <2 mL samples to maximize the injection volume. These glass inserts have a small total volume capacity of <400 μL, with a minimum residual volume of 2 µL. When placed and sealed inside 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 2-4 μL. These inserts are Performance Level 3, which means they are designed to protect your most valuable samples and deliver consistent, reproducible results for your most demanding analyses. They are Specification Certified to ensure physical dimensions and meet all requirements of US, EU, JPN Pharmacopeia.