Test tubes

With flat bottom (Art. No. H992.1 with conical bottom) and tight-fitting lids. The conical recess in the lid allows penetration with a syringe, whereby the needle is centred automatically. Easy to open and/or close. For storing samples or for using autosamplers. Sample vials 2 ml suitable for autosamplers such as Perkin Elmer ISS-100 and ISS-200.