Alligator Tumble Stirrers

     
 


The Alligator Magnetic Tumble Stirrer uses patented stir-cylinder technology to mix large numbers of samples in tubes, vials, bottles, and microplates (Patent #6,176,609).  Instead of spinning a magnetic stir bar about the horizontal plane like the standard magnetic flask stirrer, the Alligator Tumble Stirrer causes stir elements of all sizes and shapes to tumble vertically end-over-end inside each well.  The Alligator Tumble Stirrer will stir all types of microplates of any volume or format  It will also stir V and U bottom microplates, PCR plates, micro-centrifuge tubes and test tubes, bottles, syringes and special designed troughs and reservoirs.

 

Using the most powerful permanent magnets manufactured, we make many different models of Tumble Stirrers to fit the many varied applications and requirements of our customers. Requirements for heating and continuous stirring for a long period of time require special Tumble Stirrers that are resistant to heat and with motors capable of working under high loads for extended periods of time. Please check with our knowledgeable staff to help you make the appropriate selection for your application. Our specialty is flexibility- let us know if you have a custom application today!


Click here for a list of published articles that cite using the products on this page.

 

 


  VP 710D2 VP 710 C5 VP 710E3
 
Cylinder Length (Inches) 1 6 19
MGO 48 48 48
Motor DC Brushed Servo ClearPath Servo (Double Stack) ClearPath Servo (Triple Stack)
Max RPM 1100 1500 1000
Dimensions (L x W x H in mm) 200 x 50 x 50    
Color Gray White (available in Black) White
Number of SBS Positions 1 2 5
Drawing      
RPM Meter No Yes Yes
Heating Option No Yes Yes
Computer Control Option No Yes Yes
CE Compliant available available available

Whatever the size, We can mix in it.

 


Advantages Of The System

     
 
  • High–Throughput Stirring

  • Complete stirring of large numbers of samples

  • Can run multiple experiments in parallel

  • Get more reactions per gram of starting material

  • Will stir even viscous solutions (honey & glycerol)

  • No cross contamination – wells do not have to be sealed

  • Simple to operate, full speed control

  • Customizable to robotic systems

  • Flexibility of stir deck alignment

  • Durable – Can stir continuously for years without maintenance

CUSTOMER ENDORSEMENT 

     
 


Applications

     
 
  • Rapid and efficient stirring of any format microplates, test tubes, vials and syringes See Video

  • Thorough mixing of 2 or more liquid solutions

  • Thorough mixing of slurries, viscous solutions and emulsions

  • Thorough mixing of immiscible liquids (Stir StiX)

  • Keep particulates in suspension (Insert Link to Bubble Paddles)

  • Resuspend chemical libraries after storage

  • Aeration of microbial cultures to increase DNA or protein yield

  • Miniaturization of fermentations & chemical reactions

  • Stirring chemical reactions to speed completion

  • Heat and Stir to facilitate compound synthesis

  • Enables parallel synthetic development of processes

  • Resuspend settled microorganisms

  • Keep microorganisms suspended during gridding operations

  • Break up filamentous organisms

  • Dissolve solid compounds

  • Resoluabilize dried extracts from large screening libraries

  • Mix and immobilize reactions that use magnetic beads

  • Computer control for use on automated liquid handling platforms (LINK to VP 710CC)

  • VP 710-CC software

     
     
 


The photo on the right illustrates a novel way to use our Tumble Stirrers to keep the contents of a syringe suspended while injecting the contents. Whether it is cells or micro-bubbles here is a novel way to keep them in suspension.


Follow this link for more information about stirring in syringes.


Follow this linkto see a video of stirring in a syringe.

 
 
 


We offer a large assortment of magnetic Stainless Steel Stir Elements from Stir StiXs to Discs to bars and dowels to fit into any well, vial, tube or syringe.  Check out the Stir Element page for more information on coatings and dimensions.

 

We also sell Alnico and Rare Earth Magnetic Stir Bars.

 

We also offer a complete selection of levitation  Stir Balls with various coatings.

 
 
         


  Tumble Stirring Viscous Solutions

     
   

The ability to stir extremely viscous solutions, slurries and emulsions is a very useful characteristic of the V&P Alligator Tumble Stirrers.  The following graphs illustrate the ability of our Tumble Stirrers and Stir Elements to mix even solutions of 100,000 centistokes or 6.6 times more viscous than honey.   The following experiments were performed with VP 710S and VP 710E Alligator Tumble Stirrers and all our stir elements at two different heights.  The first was at 1.2" off the stir deck or at position of 3 stacked microplates.  The other position was right on the stir deck.  A series of silicone viscosity standards was placed in the columns of a microplate.  The standard series viscosity was as follows: 100 cks, 1,000 cks, 5,000 cks, 10,000 cks, 12,500 cks, 30,000 cks, 60,000 cst and 100,000 cks.

 

For comparison 1 centistoke = 1.0760 x 10E-5 sq. ft./sec.,
water = 1 cks
molasses ~ 2,500 cks
honey ~ 15,000 cks
 

For more extensive tables on the viscosity of common compounds and an explanation of the difference between centistokes and centipoises follow this link.

 

The most powerful of all our Tumble Stirrers is the VP 710S.  It will tumble all the Stir Bar Elements in 100,000 cts when the plate is setting directly on the deck.  The follow graph illustrates that it will even tumble most of them when the plate is elevated 1.2" or 30 mm above the stir deck.  This equal to stacking the plates 3 high.

 
 
 


When stirring very viscous materials we also offer Alnico and Rare Earth Magnet Stir Bars.

 
 
 
 


VP 710S

     
 


More data on the ability of the VP 710S to tumble in viscous solutions.

 


 

 
 

Stir Bars and Dowels

 

 
 


Stir Discs

 


 
 


Stir StiX

 
 
 


VP 710E

     
 
Data on the ability of the VP 710E to tumble in viscous solutions.
     
 

Stir Bars and Dowels

   
 


Stir Discs

 
 
 


Stir Stix

 
 
 


Data using the VP 710S-2 and the VP 710C1 on how high microplates with different Stir Elements can be stacked and still mix can be found at this link.

 
 
 
 


Follow this link for the magnetic field strength of the Tumble Stirrers and cautions for people with pacemakers.

 
 
 
          
 

VP 710C5
VP 710C5-CE

     
         
 

The VP 710C5 stirrer is part of a new line of servo motor stirrers offered by V&P. The powerful servo motor is ideal for high load and/or long term stirring applications. Up to 2 SBS-sized labware can be stirred in the landscape position (perpendicular to Stirrer). The VP 710E5 is easy to integrate on many robotic liquid handlers due to its low profile.


The VP 710C5 is made of flame retardant ABS 510 plastic and will tolerate temperatures up to 80 C. (Higher temperatures are accommodated with use of an optional MICA deck) Dimensions of the body are 35.5 cm length, 14.0 cm width, and 5.7 cm height to the top of the microplate holder.

 

 
         
 

VP 710C5-7
VP 710C5-7CE

     
 


The VP 710C5-7 Tumble Stirrer is a "robot friendly" version of the VP 710C5. In order for robotic grippers to have easy access to microplates being stirred, the VP 710C5-7 has a longer magnetic cylinder (7 inches vs. 6 inches for the VP 710C5). In addition, the microplate holder on the VP 710C5-7 has chamfered inside edges that make it easier for a robotic gripper to access the microplates.

 

The VP 710C5-7 utilizes a powerful servo motor that provides heavy load and/or long term stirring. Due to greater durability and torque, it can stir continuously 24/7/365.

 
 
 

Similar to the VP 710C5, standard microplates can be stacked 6 high (76 mm) in the landscape position on this Stirrer so that up to 12 standard plates or 4 deep well microplates can be stirred at the same time. In the portrait position, standard plates can be stacked 8 high (127 mm) or 3 high with deep well plates. Stirrer dimensions are 43 cm length x 8.9 cm width x 7 cm height with a stirred area of 17.8 cm long and 11 cm wide.


The housing of the Stirrer is made of flame retardant ABS 510 plastic and will tolerate temperatures up to 80 C. The VP 710C5-7 Tumble Stirrer is also available in the CE compliant version VP 710C5-7CE.

 

 
   

 
  Technical Documents:
    CAD drawing of dimensions
 

     
         
 

VP 710E5
VP 710E5CE

     
 

The VP 710E5 stirrer is part of a new line of servo motor stirrers offered by V&P. The powerful servo motor is ideal for high load and/or long term stirring applications. Up to 5 SBS-sized labware can be stirred in the landscape position (perpendicular to Stirrer). The VP 710E5 is easy to integrate on many robotic liquid handlers due to its low profile.

   
         
 

The VP 710E5 Tumble Stirrer has a stirred area of 54 cm length x 15.9cm width. The housing of the Stirrer is made of flame retardant ABS 510 plastic and will tolerate temperatures up to 80 C. (Higher temperatures are accommodated with use of an optional MICA deck) Dimensions of the body are 79.5 cm length, 15.9 cm width, and 7 cm height to the top of the microplate holder.

   
         
 

The VP 710E5 operates with a 115 volt 60 Hz controller. It also is available as a CE compliant version (VP 710E5CE) with a 230 volt 50Hz controller. Because of its ability to handle relatively heavy stirring loads, the VP 710E5 Tumble Stirrer can be used continuously 24/7/365.

   
         
 

The VP 710E5 can be computer controlled

 

 
         
 

VP 710E5-2

     
 

Optional decks are also available (sold separately). The original deck on the VP 710E5 can be removed and changed out to a different deck when required for the application. Decks can be changed to switch between landscape and portrait SBS positions, a mica deck to protect and insulate when used in conjunction with V&P’s heat/chill blocks, or a “hand-ball court” style mica deck that insulates each SBS position from one another to allow different temperatures to be used in each position without affecting one another.

   
         
 

Custom VP 710E5’s can also be built when specific applications or parameters are required.

 

 
             


   Tumble Stirrers

     
 


The Alligator Tumble Stirrer Models VP 710A and VP 710ACE measure 43.2 cm wide by 43.8 cm long by 19 cm high and fit into most incubators.   The Stir deck weighs 20.4 kg.

 

The designation "CE" on the catalog number of stirrers indicates the international version designed to operate on 230 Volts at 50 hertz.  The international versions have passed rigorous testing and are CE compliant.  All of the motors and controls used in the Alligator Tumble Stirrer are rated for continuous rugged usage and are maintenance free.  So if you need to stir for long periods of time this system won't quit on you.

 

The VP 710A and VP 710ACE Rotary Tumble Stirrer models simultaneously stirs 3 layers of 9 microplates - 27 total or 2,592 specimens in 96 well microplates or 13, 824 specimens in 384 well microplates. The VP 710ACE is equipped with an 230 volt 50 hertz international motor and controller. These models are capable of spinning the stir elements at speeds up to 900 RPM.  The high speed tumbling action is great for many applications especially if you want to stir the contents of deep well microplates.  The ability to turn the stir elements over 900 RPM in the same direction, creates significant fluid movement. This fluid movement and the physical interaction with the stir elements is ideal for resuspending dried extracts, mixing viscous reagents and keeping organisms or beads in suspension in deep well microplates. 


Click here for a list of published articles that cite the products on this page.

 

 
 
       

VP 710D2

     
 

The Multi Stirrus™ is a versatile stirrer that is compact (20 x 5 x 5 cm) and can be used in many ways. As a Tumble Stirrer, it powers Bubble Paddle Reservoirs for keeping cells, beads, and other particulates in suspension. When stood upright it becomes a powerful conventional Stir Plate, or it can stir multiple containers such as bottles, tubes, and vials as a Lateral Vortex Stirrer. The Multi Stirrus™ utilizes a 48 MGO Neodymium Iron Boron drive magnet that spins up to 1400 RPM.


The compact profile of the stirrer allows easy integration on robotic platforms where space is limited. Accessories are provided so you can choose the type of stirring needed for your application, or buy all for maximum versatility. Accessories currently include an SBS Reservoir holder, other holders for non-SBS Reservoirs, and a stand to hold the stirrer upright.

 

 
 

Applications:

  • Keep beads, cells, or particulates in suspension while pipetting
  • Stir viscous liquids or make emulsions
  • Stir multiple containers simultaneously
  • Thoroughly stir solutions with powerful vortex

Features:

  • Versatile, economical, and compact Stirrer
  • Use as Tumble Stirrer for Bubble Paddle Stirring
  • Use as Lateral Vortex Stirrer to stir multiple bottles, tubes, or vials
  • Use as a powerful Conventional Stir Plate Similar to our Mini Stirrus™
  • Fits easily on robotic workstations
  • Available in CE compliant format
     
         
   
 

Accessories for Multi Stirrus™ Magnetic Stirrer

 

The SBS feature and compact size of the Multi Stirrus™ allows for easy integration on robotic platforms. It is ideal for mixing our Bubble Paddle Reservoirs for keeping cells, beads, or other particulates in uniform suspension while pipetting. These Reservoirs allow pipetting in single channel, 8 channel, 12 channel, 96 well, and 384 well formats. The accessories provided allow use in multiple ways for maximum versatility in every lab.


VP 710D2-1

     
         
 

Accessory holder for the VP 756A series Bubble Paddle Reservoirs. Similar holders can be made for any of our Bead/Cell Bubble Paddle Reservoirs.


Bead/Cell Mixing Bubble Paddle Reservoirs
For precision distribution, our Bubble Paddle Reservoirs keep resins, SPA beads, glass beads, and cells in suspension while being pipetted to multiple locations such as wells of microplates. Use of these Reservoirs also results in the smallest dead volume possible, an important factor when reagents are expensive. The V&P Scientific Bubble Paddle Reservoir mixing systems provide a simple and economical way to keep your particulates in suspension when used with the versatile Multi Stirrus™.

   
         

VP 710D2-2

     
         
 

Accessory holder to hold SBS-dimensioned reservoirs (127.7 mm X 85.5 mm). Also, an accessory SBS feature attached beneath the Stirrer facilitates adaptation to robot decks.

VP 581D

Accessory SBS feature attached beneath the Stirrer facilitates adaptation to robot decks.

   
         
 

For more information on the VP 710D2 please see the Multi Stirrus™ page.

     



  Alligator Tumble Stirrer For The Beckman FX

 
 


VP 710C1-ALPFX

     
 


One of our customers wanted use our VP 750 Bubble Paddle Stirrer on his FX and asked us how we could make that happen.  The photo on the right illustrates how we made some simple modifications to a VP 710C1 and mounted it on its side under one of our FXALP-PM plate holders for the FX and placed the VP 750-PTFE on top.  An easy instillation that does not take away other plate positions.  Depending upon your application a variety of other Bubble Paddle Reservoirs, microplates with Stir Elements or  syringes with Stir Elements could be placed on the FXALP.

 

One of the advantages of the FXALP-PM is that Bubble Paddles reservoirs can be locked into a fixed position.

 

The new designation for the modified Tumble Stirrer is the VP 710C1-ALPFX.  It is made by encasing the motor in ABS plastic and placing mounting holes and bracket on the sides instead of the top.    It is designed to stir 1 (portrait) position.    Plates can be stacked 4 high (48 mm) in this position.  The standard dimensions are 40.1 cm long, 7.7 cm wide by 8.9 cm tall with a stirred area of 14 cm long and 11 cm wide.

 

The skin of the stirrer is made of ABS plastic and will tolerate Heating Blocks with temperatures up to 60C.   We suggest you use the VP 710G11H when used with higher temperature Heating Blocks or contact us for custom solutions.

 

The VP 710C1-ALPFX is powered by a rugged 50 oz-in torque DC Brush Servo Motor.  If you want a utility duty intermittent stirring system under your FX ALP this is the unit for you.

VP OK21 & VP OK22 Kits

 

The VP OK21 and VP OK22 differ in that the VP OK22 is the CE version which allows for use with countries that use 230volt electricity.

 

These kits consist of:

  VP 710C1-ALPFX or VP 710C1-ALPFXCE
  FXALP-PM

  VP 750PTFE

  VP 581B (modified to attach to VP 750PTFE)

 

 

 
 
 

 
  Technical Documents:
    VP 710C1-ALPFX Series Operation Manual
 


 
  Technical Documents:
    VP 710C1-ALPFXCE Series Operation Manual
 

 


VP 710C1-FXALP2W

     
 


One of our customers wanted use both our VP 750 and VP 756A Bubble Paddle Stirrers on his FX and asked us how we could make that happen.   Because the long axis of the Bubble Paddles has to be parallel to the long axis of the Tumble Stirrer in order for the Bubble Paddles to spin it is essential to be able to change the Tumble Stirrer axis of orientation to match each Bubble Paddle reservoir.  The photos on the right illustrate how we made some simple modifications to a VP 710C1-FXALP and to our FXALP-PM plate holders (FXALP-PM2W) for the FX so the stirrer can be mounted either in the x or y axis of the FXALP-PM2W and all of our bubble paddle reservoirs can be accommodated.   It is an easy operation to change the Tumble Stirrer orientation.  

 

Another advantage of the FXALP-PM2W is that Bubble Paddles reservoirs or their SBS blocks can be locked into a fixed position.

 

The new designation for the modified Tumble Stirrer is the VP 710C1-FXALP2W.  It is made by encasing the motor in ABS plastic and placing mounting holes and bracket on the sides instead of the top.    The standard dimensions are 40.1 cm long, 7.7 cm wide by 8.9 cm tall with a stirred area of 14 cm long and 11 cm wide.

 

The skin of the stirrer is made of ABS plastic and will tolerate Heating Blocks with temperatures up to 60C.   We suggest you use the VP 710G11H when used with higher temperature Heating Blocks or contact us for custom solutions.

 

The VP 710C1-FXALP2W is powered by a rugged 50 oz-in torque DC Brush Servo Motor.  If you want a utility duty intermittent stirring system under your FX ALP this is the unit for you.

 

 






 
 
   

Profile Table Mounted Tumble Stirrer

     
 


VP 710T

     
 

 

The VP 710T is the latest development in the Alligator Tumble Stirrers.  For Customers who want to incorporate the Magnetic Cylinder into their work station deck, simply attach the mounting brackets right to the Profile Table.  With many work stations there is ample room to accommodate even our largest motors.  The photo to the right illustrates the mounting system we used on a Tecan workstation.

 
 
 


The photo to the right illustrates how easy it is to mount the VP 710T to standard Profile Table aluminum extrusions or struts.

 
 
 


The photo to the right illustrates the simplicity of the VP 710T design with mounting brackets attaching the Stirrer Frame to a profile table.  One of our customers has even used this design to attach to a wooden table which was supporting their robot.

 
 
 


The photo to the right illustrates the simplicity of the VP 710T design as seen from the top.

 
 
 


The photo to the right illustrates the simplicity of the VP 710T design when viewed from the end.  Most robot platforms are hollow under the deck and our adjustable standoff feature allows the magnetic cylinder to be positioned into this hollow space just under the deck for maximum stirring efficiency.

 
 
 


The photo to the right shows the protective covering over the motor.

 
 
 


The photo to the right shows the protective covering over the motor.

 
 
 


The photo to the right shows a custom VP 710T with a 15inch magnetic cylinder.

 
 
 


The photo to the right show the VP 710T installed under a robotic deck.

 
 
 

 
  Technical Documents:
    CAD drawing of dimensions
    VP 710T Operation Manual
 

         


  Tumble Stirrer For Chemspeed Robot

     
 


VP 710J

     
 


The VP 710J was designed to operate in Chemspeed Robot work station.  We have modified the design so the Stirrer will "hang" from the two side mounting rails on the Chemspeed's deck.  See photos below.  This design provides a very compact footprint that takes advantage of the narrow and deep space available within the robot deck.  The outer shell of the VP 710J is constructed of durable heat resistant polycarbonate and is compatible with our VP 741BW low profile robot deck heating block (see photos below).

 
 
 


The deck of the VP 710J is configured so it can hold microplates in either portrait or landscape orientations. Plates can be stacked 4 high (48 mm) in the landscape position on this system so that up to 8 Standard plates or 4 deep well microplates can be stirred at the same time.  Standard plates can be stacked 6 high (127 mm) or 3 high with deep well plates in the portrait position.

 
 
 


The VP 710J can also be used on a flat surface simply by placing it on its side and mounting the microplate deck on the side as illustrated in the photo to the right.

 
 
 


The photos to the right were taken with the VP 710J in a Chemspeed robot work station with one of our VP 741BW low profile heating blocks.  The ability to accommodate a heat block provides the capability to heat and stir samples at the same time on the robot deck.

 

 
 
   

 
  Technical Documents:
    CAD drawing of dimensions
 


VP 710J-1

   
 


The VP 710J-1 is a re-designed VP 710J which lowers the deck and allows for taller plates and or heat blocks to be used with the Stirrer/Chemspeed Robot.   This design provides a very compact footprint that takes advantage of the narrow and deep space available within the robot deck.  The outer shell of the VP 710J is constructed of durable heat resistant polycarbonate and is compatible with our VP 741BW low profile robot deck heating block (see photo to the right and below).
 

 
 
 


The VP 710J-1 also is available as a CE compliant version the 230 V, 50HZ
VP 710J-1CE.

 

 
 
   

 
  Technical Documents:
    CAD drawing of dimensions
 

 


VP 710J-1CE

   
 


The VP 710J-1CE was designed to fit on a Chemspeed robot and stir one heated microplate.  The VP 710J-1CE is illustrated in the photo on the right with a VP 741BW heating block to regulate the temperature in the microplates from ambient to 100C.  Also in the photo is our VP 700 smart switch for turning the power to accessories on and off. 

 
 


The VP 710J-1CE can stir 2 microplates in the landscape position.

 


VP 710CS

   
 


The VP 710CS was designed to fit into a Chemspeed robot deck enclosure and stir a rack of test tubes uniformily.

 


 
     


 
   


  Magnetic Cylinders

     
 

  The magnetic cylinders that power our Tumble Stirring systems can be made from lengths as short as 10 cm and as long as 100 cm.  If your application requires a special length please contact us.

Several of our customers install our magnetic cylinders in or under their robot platforms and power them with their own motors.  This allows the customer the ability to fully integrate mixing function into heated reaction blocks.

If you would like to integrate a cylinder into your instrument, inquire today about licensing V&P’s patented Stir Cylinder Technology (LEGAL VERBIAGE)

 
 
 
The magnetic cylinder bearing and mount shown to the right are provided with all our magnetic cylinders.
 
 
 


VP 710C-6

     
 

 

Magnetic Tumble Stirring Cylinder (US Patents # 6,176,6097 and 7,484,880), 6 inch (15.3 cm) magnet length, 48 MGO Neodymium Iron Boron (NdFeB) magnet, with spindle, bearings and bearing mounts, 8.1 inch (20.5cm) overall length.

 
 
 

 

Photo showing drive shaft of Magnetic Tumble Stirring Cylinder.

Shaft diameter = 0.373" (9.5mm)
Shaft length = 0.58" (19mm)

Cylinder diameter = 1.65"(42mm)
 
 


VP 710C-7

     
 

 

Magnetic Tumble Stirring Cylinder (US Patents # 6,176,6097 and 7,484,880), 7 inch (17.8 cm) magnet length, 48 MGO Neodymium Iron Boron (NdFeB) magnet, with spindle, bearings and bearing mounts, 9.2 inch (23.4cm) overall length.

Shaft diameter = 0.373" (9.5mm)
Shaft length = 0.58" (19mm)

Cylinder diameter = 1.65"(42mm)

 

 

 
 


  Dispensing Stir Elements Into Microplates

     
 


Stir elements are easily placed into microplates with our Dispenser Systems. See our pages on drop dispensers and flip dispensers. The stir elements can also be easily removed from the wells in a sterile procedure using a Magnetic Replicator and Loading/Unloading System. This ability also facilitates non-sterile applications where the stir elements need to be removed from the wells without contaminating neighboring wells. In addition, for those who wish to stir long term cultures and are concerned about evaporation of liquid from the edge wells we have developed a Humidity Box for the Microplate Magnetic Tumble Stirrer.

"The Scientist" published an article in the March 2, 1998 issue about the "truly unique" mixing features of the Alligator Tumble Stirrer.  The ability to stir in microplates facilitates the miniaturization of many different processes that were confined to test tubes simply because the process required physical mixing.  Previous attempts to physically mix in microplates using orbital shakers or vibratory means failed because of the small size of the wells.  Moreover when the mixing actions were increased, the liquid was often shaken from the wells.  The ability to simultaneously stir the contents of 3,456 wells in 96 well microplates or 13,104 wells in 384 well microplates on one stirrer opens the possibility of significantly increasing throughput by miniaturization of many different processes from synthesis to micro fermentations.  These new possibilities are also discussed in an article published in the March 1998 issue of American Laboratory News Edition, Volume 30 #7, page 10. 

 

All of the above applications done in deep well 384 microplates are most efficiently performed in the Magnetic Levitation Stirrers - VP 707A series or 707B series.

 

Tumble speed variable from 5 to 1000 revolutions per minute.

 

Operates on 115 volts and 1 amp current for USA models and 230 volts and .5 amp for international models.

 


  RPM Meter

     
 


VP 710-RPM

     
   

The VP 710-RPM is a battery powered hall sensor RPM Meter, which is useful in monitoring the speed of a tumble stirrer.  By placing it near any of V&P Scientific's Tumble Stirrers the current RPM speed of the stirrer will be displayed on the readout.

 
 
     
 


  Heating Blocks

     
 


Several of our customers wanted to heat as they stirred their samples.  The commercially available heating blocks are not compatible with magnetic stirring because they position the samples too far above the stir deck or they contain ferrite elements that block the magnetic flux.  We have built robust Heating Blocks that have a very low profile with no ferrite materials.  This design minimizes the distance from the samples to the magnetic drive thus maximizing the stirring power.  

     
 


VP 741A

 
 
 


VP 741BW

 
 
 


VP 743A-1

 
 


  Endorsement

 
 


The following is the body of an e-mail sent to us by a very satisfied Tumble Stirring customer.
 

"Patty and Patrick-

 

There is a long, official process (read: involves Legal department) for allowing endorsements of products with _______'s and/or my name. However, I would be happy to share my personal feedback to you.  If you would like to refer this to anyone as unofficial information (ie, "It came from someone in Process R&D in major Pharma."), that would be great. At the least, you'll see exactly why I love these stirrers.

 

Feedback for the Tumble Stirrers is this: enabling technology. I am now enabled to create reaction blocks and customize them to robotic systems with great ease.  Why? The narrow deck height of the Tumble stirrers (even my larger strength units) combined with flexibility of alignment for the stirrers to the reaction vessels means I can use them almost anywhere.

 

The fact that I can use the same stirrer deck with any type/size of reactor simply by changing a mounting plate atop the stirrer deck gives me the kind of flexibility I require for parallel synthetic development of processes. That flexibility enables access to a wider range of projects (smaller scale) and a wider range of reaction conditions. I get more reactions per gram of starting material for evaluation of more diverse conditions, and I generate results faster because I run more of the experiments in parallel using the same amount of starting material. In one word, Tumble Stirring is enabling.

 

Oh, and the quality of agitation is fantastic for liquid-liquid mixes, slurries, or even oil suspensions.

 

Thanks again for this terrific product.


D____."

 
   

PROFILE TABLE ROTARY ALLIGATOR TUMBLE STIRRER, motorized, 5 to 900 RPM, 115 volts, 60 Hz controller, neodymium magnets - stirs 6 deep 96 well microplates or 24 conventional plates at once

VP 710T

 
 


Click here for a list of published articles that cite using the products on this page.

 
           
 

LEASE/OPTION TO BUY PROGRAM

  The Alligator Tumble Stirrers are available on a lease/option to buy program. This allows you to do Proof of Principle experiments to see if Magnetic Tumble Stirring will work in your application.  If it works for you, then the first month lease payment is applied to the purchase price of any of our Stirrers. The first month lease payment is only 10% of the purchase price. If it doesn't work in your application just send it back to us. (We don't get many back). The second month lease is 50% of the purchase price and is NOT applicable to the purchase price of another stirrer.

 

  The new inexpensive VP 710C1 and VP 710T Alligator Tumble Stirrers have a 20% of the purchase price for the first month lease payment. The second month lease payment is 40% of the purchase price and is NOT applicable to the purchase price of another stirrer.

 

Inquire about lease terms mailto:sales@vp-scientific.com