Capillary tubes

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Safe, straightforward and accurate capillary sampling


Radiometer’s safeCLINITUBES and CLINITUBES capillary tubes come in a variety of sizes to match the sample-volume requirements of different analyzers.  They are available in plastic or glass.


Capillary cap guarantees safe sealing

We have designed our capillary tubes with rounded ends to increase safety for patients and staff.  Our capillary cap secures safe sealing and minimizes the risk of blood spillage, helping protect your staff. The capillary tubes come with a mixing wire and magnet to facilitate thorough mixing of the sample.


Unique surface treatment allows fast filling

Capillary samples are often collected in stressful situations, making it difficult to fill a capillary tube with a single skin puncture. The unique surface treatment of safeCLINITUBES capillary tubes allows fast filling, making sampling procedures easier for clinicians and less stressful for patients.


Pre-heparinized tubes reduce risk of clotting

All our capillary tubes are preheparinized with dry electrolyte-balanced heparin. This significantly reduces the risk of clotting and helps secure reliable results without any bias on electrolytes.

Radiometer offers a palette of capillary tubes for low-volume pH, blood gas, oximetry and metabolite analysis:

  • safeCLINITUBES capillary tubes are made of 100 % environmentally friendly plastic, eliminating the risk of breakage, staff or patient injury.
  • CLINITUBES capillary tubes are made of strong glass. They are durable, gas-tight and resistant to breakage. They offer optimal analytical quality.



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