Achieve Mixing Faster & More Efficiently
Zero dead volume
Low swept volume
Enhanced mixing vs. straight channel microfluidic chips
The interaction of fluids in microfluidic systems is a challenging yet important application. These interactions can take the form of controlled reactions, distribution of particles (slurries), particle control in emulsions and control of concentration, among others.
Common concerns about microfluidic passive mixer chips are that they are slow and do not mix effectively. However, Hummingbird Nano’s passive mixer with helical channels requires nearly 1/1000th the channel length of a diffusive mixer to produce complete or partial mixing, as desired.
Zero Dead-Volume Mixing
Reagents can be the most costly components in a protocol. Very low volume mixing can be readily accomplished using LabSmith uProcess syringe pumps, valves, reservoirs, software and Hummingbird Nano “X” or “Y” style helical channel passive mixer chips. Both chips have smooth, circular channels that come together to form a double helix in the mixing region. For details on how to set up a zero dead volume mixing process, click on the application note below:
Photo: Hummingbird Nano X style passive mixer microfluidic chip
on LabSmith's uProcess breadboard
Hummingbird Nano's standard passive mixing chips feature 280 µm diameter circular channels and a 5-stage helical mixing chamber for smooth flow and fast mixing. The chips include 1/16" OD PTFE tubing as side connectors that seamlessly integrate into the channels as well as easily interface with standard microfluidic components.
Chip Formats Available:
X or Y
Nominal Chip Size:
Microscopy Slide Form Factor
(76.2 x 25.4 x 3.6 mm)
Nominal Mixing Zone Length:
Input/Output Channel Geometry:
Standard Number of Helical Mixing Stages:
5 or 7
Standard Channel Size:
280 um inlet and outlet diameters
485 hydraulic diameter in mixing zone
(other channel sizes available upon request)
End style with 1/16" OD flexible PTFE tubing, >=5 cm lengths
Custom Passive Mixer Chips
Different form factors such as length and thickness, number of mixing stages, mixing zone lengths, channel diameters, tubing sizes etc. are available upon request. Results are dependent upon Reynolds number, viscosity and other fluid properties and mixing specifications. Send us your fluids and mixing specifications and we can tailor the design to fit your need.
For prototype projects or custom microfluidic chips, please contact us directly using the form below.