Flow rates in the nanoliter range starting at 1 µl/h

Customised Modular Accessory for Nanoliter flow rates for use with mzr micro annular gear pumps – 

mzr-2521  mzr-2921  mzr-2542  mzr-2942 or mzr-4622

With the by-pass module constant small flow rates reaching the nanoliter range can be obtained.

The technology bases on the partitioning of flow according to the relationship of the fluidic resistance of two capillaries.

The flow is generated by a micro annular gear pump and shows a very good constancy and little pressure dependence.

This technology creates an almost pulsation-free master circulation, from which a side current is derived.

Smallest flow rates starting at 1 µl/h can be achieved.

Depending on the differential  pressure and flow rate range an adjusting range of 1:100 may be obtained.

The lower limit of flow rate is defined by tuning of the two capillary tubes and can be adjusted according to customer's needs from 1 to 10,000 µl/h.

Applications of the By-Pass Module 

• Analytical instrumentation

• Flow chemistry

• Lubrication

• Biotechnology