Packed in plastic vials with reclosable snap-lock caps to maintain cleanliness

·         Ends may be sealed by flame or sealing clay

·         Heparinized capillary tubes are designed to prevent blood clotting

·         Ammonium heparin does not interfere with sodium identification

·         44B508 and 44A509 are bulk quantities

·         Tubes are manufactured from 90 expansion soda lime glass conforming to USP Type III requirements

·         Available in borosilicate glass as a special order