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Fisherbrand™ Micro Blood Collecting Tubes Available on GSA/VA Contract for Federal Government customers only.

With tapered bottom tips to facilitate micro blood sample collection

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Catalog No. 02-668-10

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With tapered bottom tips to facilitate micro blood sample collection

  • For Natelson and Caraway techniques
  • Color-coded tops distinguish between plain and heparinized tubes
  • Heparinized tubes are treated with ammonium heparin
  • Natelson tubes have 1.44 to 1.76mm I.D., 147mm length
  • Caraway tubes have 2.59 to 2.81mm I.D., 75mm length

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Micro Blood Collecting Tubes
250 μL
Tube Sealant
1.44 to 1.76mm
Ammonium Heparin
Natelson and Caraway techniques
Soda Lime Glass


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