Wheaton microliter assembled kit clear vial with marking patch, black cap and precut ptfe/silicone septa. Wheaton microliter screw thread autosampler vials come in fully assembled kits that are clean, sealed and ready to use. Assembled kits are shipped with the septa installed inside the cap and the cap screwed onto the vial. Microliter vials are manufactured from type 1 borosilicate glass. Vial 9mm borosilicate glass screw thread autosampler vials with white marking patch, clear screw caps 9mm polypropylene screw caps pre-cut ptfe / silicone septa: 0.005" blue ptfe and 0.035" white silicone, 0.040" total thickness, suitable for liquid chromatography cleanroom clean microliter vials are cleaned and assembled in a class 10,000 clean room to eliminate chromatographic errors associated with vials. Critical physical dimensions are fully tested, as well as chemical cleanliness testing, to ensure that trace levels of residues are not present. The result of this process are identical, clean, dependable vials, certified to ensure optimal performance and reproducible results. Class 10,000 clean room packaging eliminates the particulate contamination that can occur during transportation. (note: vials are assembled in a clean room, but the final packaging of the assembled kits is not performed in a clean room.) unsurpassed qualitymicroliter has made the fundamental decision to only offer products that offered proven stable performance and to avoid those products that had a wide range of tolerances which could impede the performance of the autosampler. In addition to meeting the requirements of our customers, microliter has formatted the vials in ways that allowed for the more efficient transfer of samples from the prep lab to the autosampler.warning: this product can expose you to chemicals including tetrafluoroethylene, which are known to the state of california to cause cancer. Prop 65 warning
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