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Advantages of V&P Scientific's Stirrus Product Line:
Secret Behind V&P Scientific's Stirrus Technology:
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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. |
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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. |
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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
Download Video of VP 706
Stirring 30 Gallons
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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Whether you are stirring a 12 gallon carboy or a single well of a 384 well microplate the Mega Stirrus will do the job.
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Download video of
VP 706B-1 in action
Download video of
VP 706B-1 in action
Download video of
mixing in action
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).
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Click here to read what one of our customer's had to say about the VP 706B-3. |
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Download Video of VP 706B-3 in action
Download Video of VP 706B-3
Stirring 30 Gallons
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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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.
Download Video of VP 706B-4H
Mixing Glass Beads
Download Video of VP
706B-4H
Heating and Mixing
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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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. |
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Download Video of VP
706B-5 Macerating Tissue
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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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. |
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Download Video
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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