The Covaris Adaptive Focused Acoustics™ (AFA) process employs focused bursts of very high frequency, and in some applications, very intense mechanical energy, transmitted acoustically through a water bath to a small focal zone within a sample vessel immersed in the bath.
The sample tube is a critical component and link in the acoustic wavepacket pathway. For example, the AFA microTUBE and miniTUBE were engineered by Covaris to provide controlled isothermal and repeatable treatment at all power settings.
Other Covaris AFA-certified Tubes and Vials are carefully selected to function properly in the “acoustic circuit” and are guaranteed to fit Covaris Tube Holders. Examples of some of the exclusive, acoustically-matched Covaris processing tubes and vials are:
The Covaris microTUBE with an AFA fiber is used extensively for DNA shearing by major genome centers throughout the world as the “best practices” for generating of deep coverage, unbiased fragments for advanced sequence analysis although they are also used for other applications with a total volume less than 130µl (e.g., FFPE thin microtome section samples). The microTUBE was specifically designed to optimize inertial cavitation and focus acoustic energy in small sample volumes (e.g., 50 microliters in the screw-cap microTUBE). The integrated AFA fiber provides nucleation sites and allows for both uniform and faster sample processing. The microTUBE is made with a special grade of hardened glass for low acoustic impedance and better transmission of energy without the generation of residual heat. The extreme AFA turbulence readily transfers excess heat from the sample to the surrounding water bath. Indeed, samples processed with the Covaris AFA system are noted for high recovery high precision and the microTUBE geometry provides synergistic acoustic focusing.
microTUBE is available in the following formats:
Snap Cap microTUBE for single tube processing in S220 or M220
Crimp Cap microTUBE for batch processing in E220 or LE220
Screw Cap microTUBE for M220
96 microTUBE Plate and 8 microTUBE Strip for automation friendly processing in E220 and LE220
Covaris 96 microTUBE plates and strips are designed for the automated batch processing capability of the E-Series and higher throughput, L-Series AFA Ultrasonicators.
The 96 microTUBE with AFA fiber, are permanently mounted to form an integrated and unitized plate assembly that meets SBS (Society of Biomolecular Screening specifications. The tubes are sealed with a pre-pierced foil to allow for low insertion/extraction force so the 96 microTUBE plate and strip are suitable for manual or automated pipetting systems. Importantly; microTUBE uses a Covaris specified, high-grade, hardened glass for low acoustic impedance and a better transmission of AFA energy without excessive heat generation. In addition, the microTUBE unique geometry provides synergistic acoustic focusing.
The 96 microTUBE Plate is available in packs of 1 or packs of 10 and the 8 microTUBE Strip is available in a pack of 10
The miniTUBE was specifically engineered to shear genomic DNA into selected fragment sizes ranging from 2 to 5kb. Interaction between the AFA Textured Surface and AFA Ultrasonic energy creates controlled non-inertial cavitation which generates micro-streaming in the sample. DNA trapped in this micro-streaming is gently sheared.
The Clear, the Blue, and the Red miniTUBE each have a different AFA textured surfaces and shearing rate. In all cases, the shearing force is gentle to generate large DNA fragment with a tight fragment size distribution, yet is strong enough to ensure complete sample processing.
The miniTUBE is currently used by genome centers throughout the world.
Clear miniTUBE to generate2kb fragments
Blue miniTUBE to genrate 3kb fragments
Red miniTUBE to generate 5kb fragments
miniTUBE is compatible with M-Series, S-Series, E-Series and L-Series Focused-ultrasonicators.
Tubes and Vials
The Covaris focused-ultrasonicators are extremely versatile tools for pre-analytical sample preparation, compound dissolution, cell lysis, biomarker extraction, nano-emulsion formation, and many other applications for the advanced biological and chemical laboratory. Covaris has designed, specificed, and qualified a variety of tubes and vials for numerous applications.
These tubes and vials are optimized to control heat and to remain stable during potentially high-energy focused-ultrasonication. These tubes and vials are suitable for M-Series, S-Series, E-Series and, in some cases, L-Series Focused-ultrasonicators.