Product Description

Globe Scientific glass capillary tubes are designed for both safe blood collection as well as accurate micro-hematocrit determinations.

  • Precision molded, they provide excellent sample retention during centrifugation
  • The tubes fill rapidly without affecting specimen integrity
  • The tubes are available plain (untreated) or with an anticoagulant (sodium or ammonium heparin) that keeps the blood from clotting
  • All of the soda lime glass tubes have color coded ends to easily identify the plain and heparin treated tubes:
    • Untreated - Blue Tip
    • Ammonium Heparinized - Green Tip
    • Sodium Heparinized - Red Tip

Technical Information:

  • Inside Diameter: 1.15mm +/- 0.05mm
  • Outside Diameter: 1.5mm +/- 0.05mm
  • Length: 75mm +/- 1mm
  • Volume: 75uL
  • Spin rate: 14,500RPM for 5 minutes
  • Material: Soda Lime


  • If collecting anti-coagulated blood from a blood collection tube, use a plain capillary tube.
  • If collecting by finger stick from a patient or when using untreated blood, use capillary tubes that are treated with an anticoagulant (heparin).


Manufacturer Globe Scientific
Overall Length 75mm
Overall Diameter 1.5mm
Volume 75uL
Item Ships From New Jersey


No return will be accepted by the seller for any reason without prior written authorization. Returns will be accepted within 30 days of shipment, only if products are in new and unused condition (must be in original, unopened carton/packaging) and accompanied by a health and safety declaration as regards potential contamination with hazardous materials due to customer use of the product. The manufacturer reserves the right to assess a minimum 20 percent restocking fee at their discretion. All shipping charges remain payable. This manufacturer assesses order cancellation fees if a submitted order is cancelled prior to shipment.

NOTE: Discontinued items, sterile products, and prefilled containers are NOT returnable.  Also, Special Order Items are non-cancellable and not able to be returned as these are made to order.


Ask a Question (1)

Customer Questions
What is the minimum diameter of glass tube available? Is there any tube available less than 1.15mm diameter?
The inner diameter of this item is 1.15mm +/- 0.05mm. We do carry item# GS-51628 which is a Micro-Hematocrit Capillary Tubes - Borosilicate Glass - Pre-Calibrated that has an inner diameter of +/- 0.55mm. This is our smallest capillary tube.
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