Kimble Chase Standard Hematocrit Tubes and Critoseal are manufactured from soda lime glass. They are packed in plastic vials with re-closable snap-lock caps to maintain cleanliness. Ends may be sealed by flame, sealing clay or patented caps. They are available in borosilicate glass as a special order.
Heparinized capillary tubes are treated to prevent blood clotting. Ammonium Heparin does not interfere with sodium identification. Use Critoseal™ to seal ends of capillary tubes.
Hematocrit tubes are made of soda lime glass.
They are available in borosilicate glass.
Capillary tubes are treated to prevent blood clots.