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Fisherbrand™ Color-Coded Capillary Tubes Available on GSA/VA Contract for Federal Government customers only.

Excellent for use in microhematocrit determinations

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Catalog No. 22-260950

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Excellent for use in microhematocrit determinations

  • Ends can be sealed by flame, sealing clay or caps
  • Manufactured from low-taper, soft glass
  • Tubes are packed in plastic vials with reclosable snap-lock caps to maintain cleanliness
  • Red band on tube indicates heparinization; blue band indicates nonheparinized tube
  • Interior surface of heparinized tubes is evenly coated with ammonium heparin (4 to 7 USP units), which will not interfere with sodium determination

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Ammonium Heparin
Tube Sealant
1.1 to 1.2mm
70 μL
Heparinized Tube


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