Designed for various safe blood collection techniques, blood typing, and testing, these glass tubes are manufactured to conform to strict specifications. To best suit different situations, all blood collection tubes are available with and without ammonium heparin coating. Both the Caraway blood tube and the Natelson blood tube are designed for use with those specific techniques and feature tapered tips for easy collection of micro-blood samples. To measure the volume percentage of red blood cells in blood, we offer the essential microhematocrit capillary tube, packed in plastic vials with re-closable snap-lock caps to maintain cleanliness.
If your work involves measuring the rate at which red blood cells settle out of plasma, choose from our erythrocyte sedimentation rate (ESR) tubes. The Wintrobe (ESR) tube can be used with standard or modified procedure and are available with various features that include; round bottom, open at both ends, and cotton plugged. Westergren sedimentation rate tubes may be used for the standard procedure, by drawing blood in a liquid sodium citrate vacuum tube, or the modified procedure, using a saline-diluted EDTA vacuum tube. KIMBLE® color-coded blood typing glass tubes feature a permanent ceramic pre-labeled blood type and label, fused to the glass, which is easily written on with marker or pencil.