Mega Stirrus

     
         
 

Advantages of V&P Scientific's Stirrus Product Line:

  • Ability to stir viscous material in small and large vessels.
     

  • Ability to stir at slow and fast speeds.
     

  • Creates impressive vortex stirring cones.
     

  • Accommodate containers of all sizes.
     

  • Complete line of Stirrus stirrers to fit any specific application.

 

Secret Behind V&P Scientific's Stirrus Technology:

  • Both the Stirrus and the stir elements contain powerful NdFeB Rare Earth magnets.
     

  • The extremely strong magnetic coupling/attraction between the Stirrus and the stir element enables stirring at high speed and of viscous material.

 


VP 706-1 & VP 706-2

     
 

The VP 706 Mega Stirrus was designed to meet those demanding stirring applications where a large volume of viscous material needs to be mixed.   Previous lab stirrers just didn't have large enough or strong enough drive magnets get the job done.  Our Mega Stirrus has a uniquely focused 30 cm long massive NdFeB drive magnet that creates a powerful attraction to stir bars in the vessel.  Even liquids as viscous as 90% honey are easily stirred producing impressive vortex cones.   See the vortex cone in the photo on the right.

The other part of our secret to stirring large vessels with viscous material is our development of NdFeB stir bars.  The stir bars couple so strongly to the drive magnet that no matter how thick or viscous the liquid is ... it will be stirred.  These were invented and developed by us for stirring viscous material.  We are the only source for NdFeB Stir Bars.   See the patent pending technology behind these powerful stir bars at this link

 

 
 
 


The Mega Stirrus comes in two models that are differentiated by the lowest speed they can spin drive magnet.  When you are stirring very viscous material you must be able to stir at low speeds to maintain the coupling of the drive magnet with the Stirring element.

 

The VP 706-1 is powered by a rugged 3/8 horse power AC inverter duty motor and operates at speeds from 30 to 300 RPM.

 

The VP 706-2 is powered by a brushless 90 watt flat motor (1/9 horse power) and operates at speeds from 100 to 450 RPM.

 




 
 

The photographs to the right show the array of holes on top of the Mega Stirrus.  Pins and posts are inserted into the holes to register and locate a vessel on top of the stir deck.

 

 


Download Video of VP 706 in action
(mpeg movie- 27MB)

 

Download Video of VP 706 Stirring 30 Gallons
(mpeg movie- 17MB)

 

Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version. 

   
     
     
 


The Mega Stirrus will accommodate your containers of all sizes.

 

Whether you are stirring a 12 gallon carboy or a single well of a 384 well microplate the Mega Stirrus will do the job.

 

     
 
     


VP 706B-1

     
 


The VP 706B-1 "Mini Stirrus" was developed to meet those stirring needs that require a strong drive magnet and greater speed and economy.  The much smaller Mini Stirrus is shown on the right of the Mega Stirrus.  The VP 706B-1 is powered by a 1/30 horse power DC brush motor and operates at speeds from 100-3600 RPM.

 
 
 


The Mini Stirrus horizontal magnetic stirrer has a 22.86cm by 22.86cm foot print and stands 15 cm tall. 


Download video of VP 706B-1 in action
(mpeg movie- 23MB)

 


Download video of VP 706B-1 in action
(mpeg movie- 26MB)


Download video of mixing in action
(mpeg movie- 10.5MB)

 

The above video shows the VP 706B-1 Mini Stirrus stirring a highly viscous solution (100,000 cP).  Stir elements used are our new PEEK-encapsulated 52 MGO stir bars (VP 772BK-52-11-48 and VP 772BK-52-11-36).


Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version. 

 
 
   
 



VP 706B-3

     
 


The VP 706B-3 "Mini Stirrus" was developed to meet those stirring needs that require a strong drive magnet and greater speed and economy.  The VP 706B-3 operates at speeds from 40-1120 RPM.

 

Click here to read what one of our customer's had to say about the VP 706B-3.

 
 
 

 

 


Download Video of VP 706B-3 in action
(mpeg movie- 11MB)

 


Download Video of VP 706B-3 Stirring 30 Gallons
(mpeg movie- 18MB)

 

Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version. 

 
 
   
 
   
 
 

 
  Technical Documents:
    CAD drawing of dimensions
 


VP 706B-3CV

     
 


The VP 706B-3CV is a 3.18 mm thick white PTFE plate that attaches to the VP 706B-3 and protects the black ABS plastic cover from accidental spills of organic solvents.   This accessory is available for your convenience.

 
 
     
 


VP 706B-4H

     
 


The VP 706B-4H is a combination Heat Plate and Horizontal Magnetic Stirrer. 

 

It is powered by a powerful (150 mNm) motor with a speed range of 100 to 2000 RPM.  The Aluminum Heat Plate has a temperature control range of ambient to 140C in

1 degree centigrade increments.  The drive magnet in the Stirrer is made from heat stable (to 150C) 42 MGO NdFeB.  This strong drive magnet will couple very strongly with stir bars and stir elements made from any fero magnetic material from Steel to Alnico, SmCo, and NdFeB the strongest of all magnetic materials.  V&P is the only company to offer NeFeB  stir elements and bars.  The faster you want to spin and the more viscous your material, the stronger the magnet stir element or bar needs to be.

 

Please visit our stir element pages for the appropriate stir element/bar for your vessel or application.


The VP 706B-4H can accommodate heating and stirring in many different vessels.


Even stirring in a graduated cylinder is no problem for the VP 706B-4H because of the high speeds we can stir with.  Note that the vortex goes all the way to the top of the cylinder.

 

 


Download Video of VP 706B-4H Mixing Glass Beads
(mpeg movie- 9.2MB)

 


Download Video of VP 706B-4H Heating and Mixing
(mpeg movie- 7MB)

 

Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version.

 

 
     
     
     


VP 706B-5

     
 


The VP 706B-5 is a Vortex Magnetic Lateral Tumble Stirrer that is designed to run at very high speeds (up to 5,000 RPM) using a powerful 48 MGO NdFeB drive magnet.  The top plate is designed to accommodate and securely locate 12 cryovials very close to the drive magnet for maximum magnetic coupling. This Vortex Magnetic Lateral Tumble Stirrer is covered under USA Patent #7,484,880, European Union Patent #1,736,235 and German Patent #60 2006 026 122.5). Instead of tumbling a stir element in the vertical plane like our Alligator Tumble Stirrer, the Vortex Tumble Stirrer spins the stir elements by tumbling them laterally against a side wall of the vessel. This spinning motion produces a vortex cone in the liquid and efficiently mixes the contents of the liquid.


When specimens are added to stainless steel stir discs and glass beads in the vials they are disrupted and the DNA released.

 

The VP 706B-5 is powered by a powerful (150 mNm) DC motor and a 110 volt AC control, with a speed range of 100 to 5,000 RPM.

 

The powerful drive magnet will couple very strongly with stir bars and stir elements made from any magnetic material from Steel to Alnico, SmCo, and NdFeB the strongest of all magnetic materials.  V&P is the only company to offer NeFeB stir elements and bars.  The faster you want to spin and the more viscous your material, the stronger the magnet stir element or bar needs to be.

 

Please visit our stir element pages for the appropriate stir element/bar for your vessel or application.

 

 
 


The photo to right illustrates plant material that was cut up and placed into a cryovial with a VP 719F stainless steel stir disc and glass beads.

 
 
 


The photo to the right illustrates how the sample was homogenized after only 1 minute of stirring.



Download Video of VP 706B-5 Macerating Tissue
(mpeg movie- 11MB)

 

Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version.

 

 
 
 
 
     
         

 
  7 Point Stirrer for Production of Nanosuspensions

     
 


VP 706-7

     
 


More than 40 percent of drugs coming from high-throughput screening are not soluble in water.  The problem is compounded further when the drug is also not soluble in organic media.  The issue associated with these drugs is too low bioavailability and or low absorption1,2.

 

One drug formulation approach to solving this problem is making the drug into nanosuspensions or nanoparticles.  This method requires engineering the drug compound molecules down to the nanoscale (10-9 meter).  At this scale, the problems associated with solubility and bioavailability are resolved3

 

Currently, there are two predominant “Top Down Technologies” methods for nanoparticle synthesis, which involve the disintegration of the compounds: media milling and homogenization4.

 

Nanosuspensions processed via media mills are prepared by filling the mill chambers with milling media, water, the drug, and stabilizer (usually a surfactant), and rotated at a very high rate to shear the drug.  The milling media usually composed of glass beads, zirconium oxide, or pearls which impact with the drug particulates, resulting in nanosized particles. 

 

Nanosuspensions prepared via homogenization uses an instrument utilizing high pressure to break down the particles.  The drug is forced from a 3 cm diameter cylinder into a 25 μm diameter cylinder at pressures between 2,800 to 21,300 PSI, causing the drug compound to break into nanoparticles.  However, this method requires that the drug compound be in the micron scale before processing.

 

The VP 706-7 was designed to take insoluble compounds and make them into nanosupensions or nanoparticles by mixing the drug compound with glass beads using a combination of powerful magnetic stir elements and drive magnets.  The VP 706-7 is capable of spinning up to 2,500 RPM with great magnetic attraction, and can be used for complete attrition of the drug compound down to the nanoscale or for preparation before being processed through a high-pressure homogenizer. 

 


 
 


The VP 706-7 works well with any graduated cylinder.

 
 
 


Variety of holders for different size vials.  Our sizes will accommodate vials with O.D.s of 70.48mm, 35.18mm, 25.4mm, 16.5mm.

 
 
 


Easily change the size by sliding out and pressing in a new ring.

 
 
 


Holders are secured to the deck by alignment pegs.

 
 
 


By placing vials at the mid-point between the 7 stir points it is possible to mix many more vials.


 

 


Download Video
(mpeg movie- 24MB)

 

Press the play button to view the video in a flash format, flash must be installed, or click the download link to download a mpeg version.

 
 
         

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