Easily Mix Bioinks: The SpeedMixer

Wikis > Easily Mix Bioinks: The SpeedMixer

Have trouble preparing highly viscous bioinks? Need a tool to mix two components of a bioink with varying viscosities? Or do you need to mix a powder with a viscous solution? Does it take you forever to mix components used in your bioink? If so, we suggest checking out the FlackTek SpeedMixer.

We’ve been testing the FlackTek SpeedMixer in our lab here at Allevi over the past few months and have found this product to be indispensable.  Some quick points:

  • There are no blades, everything mixes inside a closed container
  • The SpeedMixer removes air/bubbles as it mixes
  • There is no cleanup or risk of contamination between samples
  • Extremely repeatable and consistent results- prepare the same materials perfectly each time
  • You can simply remove bubbles from your syringe before loading it into your Allevi device


Figure 1: The SpeedMixer can mix virtually any combination of materials for a consistent, even mixture. Above are results of mixing plasticine components as well as silicone and color concentrate.

Some particularly useful applications have been in preparing alginate-based solutions as well as for preparing silicone-based bioinks. The SpeedMixer has saved Allevi valuable time, decreasing mixing times from days or hours to mere minutes, also creating more consistent mixtures that are crucial for repeatable results. The SpeedMixer also allows loading of materials into syringes, helping with deairing and offers containers that allow for direct mixing in a syringe, so you can prepare your bioink for direct loading into your Allevi device!

A video of the SpeedMixer in action. Check it out at www.speedmixer.com.

The FlackTek SpeedMixer offers advantages over other products through its proprietary technology. The mixing procedure of the SpeedMixer™ series is based on the double rotation of the mixing cup (hence the designation “Dual Asymmetric Centrifuge” or DAC).


figure 2: Proprietary SpeedMixer technology

This combination of centrifugal forces acting on different levels enables very rapid mixing of the entire cup. The precision construction of the units gives the opposing forces an equilibrium with near zero vibration and low-noise operation. Whatever your bioink formulation, the FlackTek SpeedMixer will help you prepare your formulation faster and more repeatedly than ever before.