DWK micro-hematocrit tubes are used to measure the volume percentage of red blood cells in blood. Heparinized tubes are red coded, and non-heparinized are blue coded.
Features & Benefits
Manufactured from soda-lime glass
Packed in plastic vials with reclosable snap-lock caps to maintain cleanliness
Ends may be sealed by flame or sealing clay
Heparinized (Red Coded) 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