VP 772BK-N42-11-48

VP 772BK-N42-11-48

STIR ELEMENT, CYLINDER, NdFeB Magnet, 42MGO, PEEK Encapsulated, Used in Bottles, 10/pack

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STIR ELEMENT, CYLINDER, NdFeB Magnet, 42MGO, PEEK Encapsulated, 11.5mm Diameter, 48.2mm Length, 150°C Max Operating Temp for Magnets

Shape

Cylinder

Container Used

Bottles

Bottle Volume

1000mL

Diameter

11.5mm

Length

48.2mm

Magnet Type

Neodymium (NdFeB)

Magnet Strength

42MGO

Temp Resistant

150°C Max Operating Temp

Autoclavable

Yes

Encapsulation/Coating

PEEK Encapsulated

Max Element Size

40.0mm – 49.9mm

Unit of Measure

10/pack

Sterilizable by Gamma Radiation

Yes

V&P Scientific Makes a Wide Range of Stir Elements that can be Tailored to Meet Your Needs and Applications.

Wide Variety of MATERIALS

  • Stainless Steel
  • ALNICO,
  • Samarium Cobalt and
  • Neodymium Iron Boron (NdFeB)

 

Wide Variety of COATINGS

  • PTFE
  • PTFE Sandwich style
  • Parylene
  • PEEK
  • PVDF
  • Glass Encapsulated
  • High-Temperature Resin

 

Wide Variety of STIRRING CONTAINERS

  • Micro Chambers
  • Microplate Wells
  • Test Tubes
  • Vials
  • Syringes
  • Reservoirs
  • Bottles
  • Flasks
  • Carboys
  • Barrels
  • 600 Gallon Containers

 

Wide Variety of SHAPES AND SIZES

  • Complex 3D-printed stir elements
  • Cross
  • Curve shapes
  • Disc
  • Dumbbell
  • Egg shape
  • Fan
  • Giant Stir Bars
  • Heart shapes
  • H-shapes
  • Mini and Micro Stir bars
  • Ovals
  • Paddle top
  • Paddles
  • Rectangle
  • Spheres
  • Stick
  • Stir Bars
  • Torpedoes
  • Trapezes
  • Triangles
  • Tuning forks
  • Umbrella
  • U-shaped
  • V-shapes

We have designed these stir elements to work specifically with our powerful drive NdFeB magnets USED ON OUR STIRRERS

  • Vertical Tumble Stirrers (VP 710 series)
  • Lateral Vortex Stirrers (VP 708 series)
  • Levitation Stirrers (VP 707 series)
  • Horizontal Stirrers (VP 706 series)

V&P Scientific stir elements are used in Redox Chemistry, Pharmaceutical, Biotech, and Biological research, Environmental Toxicity Assays for heavy metals, the Food Industry, Breweries, E-Cigarettes Juice, and even Marijuana processing to name a few.

Polyether Ether Ketone (PEEK) Encapsulated NdFeB Stir Bars and Discs

Neodymium Iron Boron (NdFeB) is the strongest of the permanent magnetic materials. Previously, Neodymium Iron Boron has not been available as a completely encapsulated Magnetic Stir Element. V&P is the only source of Polyether ether ketone (PEEK) encapsulated NdFeB. We offer a high and a low-temperature resistant form of the NdFeB which can be selected to fit your application. We also offer Samarium Cobalt (SmCo) rare earth magnets which are available for even higher-temperature applications. By way of comparison, Alnico magnets the most commonly used in magnetic stir bars, are much weaker at only 7 MGO. So if you need to stir viscous material, soil samples, wood chips, or particulates at high speeds or grind nanoparticles with glass beads, this is the system for you.

Polyether ether ketone (PEEK) is a thermoplastic with excellent mechanical and chemical resistance properties that are retained through higher temperature applications.  Because of these inherent properties, PEEK is an ideal material for use as a magnetic stir bar in high mechanical stress-induced applications for its abrasion resistance or when chemical attacks are a concern.  See detailed information on the properties of PEEK.

PEEK is much superior to PVDF in grinding applications or applications where glass beads or Zirconium Oxide beads are used to make nano particles.

V&P is the first to offer this option with our new PEEK POWER Magnetic Stir Bars.  Made with PEEK-CLASSIX from Invibio.  See detailed information on PEEK-CLASSIX.

PEEK Properties

The thermal oxidative stability of PEEK is excellent and the material has a UL-rated continuous operating temperature of around 250°C (depending on the grade used).  PEEK has excellent resistance to burning and very low flame spread being rated as UL 94 V-0 for thicknesses down to 2 mm. The LOI (Limiting Oxygen Index) is 35% (depending on grade) and even when burning the material has one of the lowest smoke generation characteristics of engineering thermoplastics.

Chemical Resistance

PEEK has outstanding chemical resistance and is extremely resistant to most organic and inorganic chemicals. It is dissolved or decomposed only by concentrated anhydrous or strong oxidizing agents.  The material has exceptionally good resistance to hydrolysis in hot water and remains unaffected after several thousand hours at more than 250°C in pressurized water.  PEEK is not greatly resistant to UV radiation but has good resistance to beta and X-rays, as well as exceptional resistance to gamma rays (more than 1000 Mrad without significant loss in mechanical properties). These properties allow for ease of sterilization, and coupled with good biocompatibility (USP Class VI), PEEK makes a strong candidate for medical applications.

Physical and Mechanical

PEEK has greater strength and rigidity than many of the other engineering thermoplastics, making it tough over a wide range of temperatures. It has good mechanical properties, including impact resistance, low wear rate, and a low coefficient of friction, but more importantly, these properties are also retained over a wide temperature range.

PEEK-CLASSIX Certifications:
  • US Pharmacopoeia Class VI
  • ISO 10993-1 Guidance
  • ISO 10993-5 Cytotoxicity
  • ISO 10993-10 Sensitization

Applications
  • Nano suspension synthesis in drugs where the PEEK stirrer can be used to break down drug compounds in combination with zirconium oxide beads.  Other materials, such as PVDF encapsulated magnets or even stainless steel will be quickly damaged by the zirconium oxide beads, leading to sample contamination, while PEEK will remain virtually undamaged for a prolonged (8 hours) period of mixing.
  • Grinding wood pulp using the PEEK stirrers for fermenting biomass.  One of our customers requested some of our PVDF Magnetic Stir Bars but quickly found out that the PVDF because it is a soft material, was destroyed by the wood pulp.  We recommended using one of our PEEK Stir Bars and the problem was solved.

Related Products

Hydrophobic Coated vs Non-Coated Pin Transfers

Solid Pin Delivery Data For Aqueous Solutions In 96 Format With Uncoated And /Ah Hydrophobic Coated Pins
PinDescriptionnl TransferredCV%
0.229 mm diameter (FP9)Total PinUncoated7.412.4
Hydrophobic7.465.4
0.229 mm diameter (FP9)Hanging DropUncoatedN/AN/A
Hydrophobic2.093.8
0.457 mm diameter (FP1)Total PinUncoated33.483.2
Hydrophobic28.177.5
0.457 mm diameter (FP1)Hanging DropUncoated16.964.5
Hydrophobic8.510.8
0.787 mm diameter (FP3)Total PinUncoated87.323.9
Hydrophobic77.43.9
0.787 mm diameter (FP3)Hanging DropUncoated48.771.2
Hydrophobic43.059.4
1.19 mm diameter  (VP 409 & VP 386)Total PinUncoated247.222.8
Hydrophobic192.672.6
1.19 mm diameter (VP 409 & VP 386)Hanging DropUncoated76.351.6
Hydrophobic108.42.8
1.58 mm diameter (VP 408 & VP 384)Total PinUncoated273.54.6
Hydrophobic259.253.1
1.58 mm diameter (VP 408 & VP 384)Hanging DropUncoated201.935
Hydrophobic170.047.5

Transfer Of Horseradish Peroxidase In Tris Buffered Saline With Pin Tools

Conclusion

Coating pins will reduce the total amount of liquid transferred and also reduce the amount of non-specific binding to the stainless-steel pins. If the substance you are transferring has high non-specific binding this will be an important factor in selecting your pins.

Slot Pin Delivery Data For Aqueous Solutions In 96 Format With Uncoated And /Ah Hydrophobic Coated Pin
PinDescriptionnl TransferredCV%
0.229 mm diameter (FP9)Total PinUncoated7.412.4
Hydrophobic7.465.4
0.229 mm diameter (FP9)Hanging DropUncoatedN/AN/A
Hydrophobic2.093.8
0.457 mm diameter (FP1)Total PinUncoated33.483.2
Hydrophobic28.177.5
0.457 mm diameter (FP1)Hanging DropUncoated16.964.5
Hydrophobic8.510.8
0.787 mm diameter (FP3)Total PinUncoated87.323.9
Hydrophobic77.43.9
0.787 mm diameter (FP3)Hanging DropUncoated48.771.2
Hydrophobic43.059.4
1.19 mm diameter  (VP 409 & VP 386)Total PinUncoated247.222.8
Hydrophobic192.672.6
1.19 mm diameter (VP 409 & VP 386)Hanging DropUncoated76.351.6
Hydrophobic108.42.8
1.58 mm diameter (VP 408 & VP 384)Total PinUncoated273.54.6
Hydrophobic259.253.1
1.58 mm diameter (VP 408 & VP 384)Hanging DropUncoated201.935
Hydrophobic170.047.5

Transfer Of Horseradish Peroxidase In Tris Buffered Saline With Pin Tools

Conclusion

Although the slots in the pin are a precise volume, the liquid that is transferred is usually more. The reason for this is due to the surface tension of the liquid causing the liquid in the slot to “bow out” thus increasing the volume of the liquid in the slot. If is important for you to transfer exactly a certain volume we can make custom slots to match the surface tension characteristics of your liquid

Liquid Surface Tension

Effect Of DNA Or BSA Concentration On Slot Pin Transfers Of Uncoated And Hydrophobic Coated Pins (FP3CS500)
Solvent/SampleConcentrationCV%nl FITC TransferredCV%nl FITC Transferred
UncoatedUncoatedHydrophobic CoatedHydrophobic Coated
DMSO (-)08.1353.427.5298.72
DMSO + DNA (mg/ml)0.56.6497.216.6435.86
0.259432.494.1391.93
0.1258.9363.640.9344.75
0.06252.3381.862331.68
0.03131.5378.034.4331.71
0.01561.2357.521.4329.03
Tris (-)04.9577.317.2493.53
Tris + DNA (mg/ml)0.54.5540.531.1477.5
0.254.6518.216.1456.75
0.12515.8583.254.1438.82
0.06254.2551.173.1433.69
0.03134.4536.662.3458.37
0.01562.9528.531.2441.1
Tris + BSA (%)45.4462.1311409.27
14452.862.7426.58
0.2511.7456.451.3408.72
0.06251.1445.226.5393.07
0.01563.7462.853.9430.2
0.00391.5493.542.2437.29
0.0012.9504.250.7475.96
Conclusions

1. Increasing the concentration of DNA (sheared salmon sperm) to .25 mg/ml significantly increases the volume of DMSO liquid transferred for both coated and uncoated FP3S500 Slot Pins.
2. Increasing the concentration of DNA does not significantly increase the volume of Tris buffer (aqueous) transferred by both coated and uncoated FP3S500 Slot Pins.
3. Increasing the concentration of BSA (Bovine Serum Albumin) significantly decreases the volume of Tris buffer transferred by both coated and uncoated FP3S500 Slot Pins.
4. Hydrophobic coated FP3S500 Slot Pins transferred less DMSO – DNA and less Tris DNA and less Tris BSA than the uncoated FP3S500 Slot Pins.
5. Both coated and uncoated FP3S500 pins transfer significantly more aqueous solution than DMSO.

Effect Of DNA Or BSA Concentration On Slot Pin Transfers Of Uncoated And Hydrophobic Coated Pins (FP1CS50)
Solvent/SampleConcentrationCV%nl FITC TransferredCV%nl FITC Transferred
UncoatedUncoatedHydrophobic CoatedHydrophobic Coated
DMSO (-)04.249.382.149.31
DMSO + DNA (mg/ml)0.54.951.242.656.79
0.251.750.21.249.53
0.1251.551.272.349.77
0.06252.249.344.148.19
0.03131.249.030.250.23
0.01562.445.91.446.64
Tris (-)02.689.512.991.34
Tris + DNA (mg/ml)0.5777.110.684.62
0.253.982.221.684.89
0.1253.985.42185.08
0.06251.585.362.885.03
0.0313284.52388.19
0.01562.682.922.883.2
Conclusions

1. In contrast to the FP3S500 data, increasing the concentration of DNA to .25 mg/ml does not significantly increase the volume of DMSO liquid transferred for both coated and uncoated FP1S50 Slot Pins.
2. Increasing the concentration of DNA does not significantly increase the volume of Tris buffer (aqueous) transferred by both coated and uncoated FP1S50 Slot Pins.
3. In contrast to the FP3S500 data, FP1S50 coated pins transferred about the same volume of DNA at all concentrations as did uncoated pins.
4. Both coated and uncoated FP1S50 pins transfer significantly more aqueous solution than DMSO.
5. The differences between the FP3S500 and the FP1S50 pin may be due to the different pin diameter’s effect on contact angle and therefore on the “wetting” of the pin. See the diagram on the link to / ah energy system.

PinDescriptionnl TransferredCV%
0.229 mm diameter (FP9)Total PinUncoated7.412.4
Hydrophobic7.465.4
0.229 mm diameter (FP9)Hanging DropUncoatedN/AN/A
Hydrophobic2.093.8
0.457 mm diameter (FP1)Total PinUncoated33.483.2
Hydrophobic28.177.5
0.457 mm diameter (FP1)Hanging DropUncoated16.964.5
Hydrophobic8.510.8
0.787 mm diameter (FP3)Total PinUncoated87.323.9
Hydrophobic77.43.9
0.787 mm diameter (FP3)Hanging DropUncoated48.771.2
Hydrophobic43.059.4
1.19 mm diameter  (VP 409 & VP 386)Total PinUncoated247.222.8
Hydrophobic192.672.6
1.19 mm diameter (VP 409 & VP 386)Hanging DropUncoated76.351.6
Hydrophobic108.42.8
1.58 mm diameter (VP 408 & VP 384)Total PinUncoated273.54.6
Hydrophobic259.253.1
1.58 mm diameter (VP 408 & VP 384)Hanging DropUncoated201.935
Hydrophobic170.047.5

Aqueous Transfer with Solid Pins

Hydrophobic coating pins will reduce the total amount of aqueous HRP liquid transferred and also reduce the amount of non-specific binding to the stainless-steel pins. If the substance you are transferring has high non-specific binding this will be an important factor in selecting your pins.

 

Pin diameter also has an effect on the degree of reduction of liquid transfer with hydrophobic coating as the smaller the diameter the less the reduction of transfer. This is most likely due to the curvature of the pin affecting the wetting contact angle

PinDescriptionnl TransferredCV%
0.457 mm diameter (FP1)6 nl SlotTotal Pin*Uncoated25.610.8
HydrophobicN/AN/A
10 nl SlotTotal Pin*Uncoated23.366.1
Hydrophobic25.856.9
50 nl SlotTotal Pin*Uncoated67.832.5
HydrophobicN/AN/A
0.787 mm diameter (FP3)  100 nl SlotTotal Pin*Uncoated180.327.2
Hydrophobic205.845.5
200 nl SlotTotal Pin*Uncoated277.824.9
Hydrophobic287.33.8
500 nl SlotTotal Pin*Uncoated581.165.2
Hydrophobic555.693

DMSO Transfer with Slot Pins

Hydrophobic coating pins will slightly increase the total amount of DMSO FITC liquid transferred.

PinDescriptionnl TransferredCV%
0.787 mm diameter (FP3)    100 nl Slot Total Pin, Including SlotUncoated195.691.6
Hydrophobic170.22.9
0.787 mm diameter (FP3)  100 nl Slot, Slot OnlyUncoated149.674.9
Hydrophobic129.617.6
0.787 mm diameter (FP3)200 nl Slot Total Pin, Including SlotUncoated269.771.9
Hydrophobic228.6217.1
0.787 mm diameter (FP3)200 nl Slot, Slot OnlyUncoated237.528.9
Hydrophobic186.95.9

Aqueous Transfer with Slot Pins

Although the slots in the pin are a precise volume, the liquid that is transferred is usually more because of the volume carried on the sides of the pins. 

As seen with other aqueous data the amount transferred on hydrophobic coated Slot pins is less than on uncoated Solid or Slot pins. Thus Hydrophobic coating has the most effect on aqueous transfers.

Withdrawl Speeds Impact on Volume Transfer

Solid Pins More affected by Source Plate Volume

Volume Transferred For FP1 Pins (Uncoated) In 96 And 384 Formats
Volume Transferred For FP3 Pins (Uncoated) In 96 And 384 Formats

Note: Same volume (200ul for 96 Format and 74 ul for 384 Format) in recipient plates and same pin withdrawal speed for all pins. Changes to pin withdrawal speed or volume in the source plate can result in different volumes being transferred.

Transfer volumes should always be confirmed by customers for their assay conditions and automated system.

Aqueous Solutions Pin Transfer Volumes Ranges

Aqueous Solutions on Uncoated Pins in 96 Format Microplates(1)
Pin TypePin Diameter(mm)Shape96 Format Low Range(nL)²96 Format High Range(nL)²
FP90.229Solid1339
FP80.356Solid1537
FP10.457Solid2261
FP1S60.4576nL Slot3467
FP1S100.45710nL Slot3974
FP1S500.45750nL Slot90124
FP30.787Solid93213
FP3S1000.787100nL Slot213334
FP3S2000.787200nL Slot311449
FP3S5000.787500nL Slot515671
FP40.914Solid126289
Footnotes: (1) Delivery volume range is determined by speed of withdrawal from source liquid: Z-Speed Range = 1.5-30 mm/sec, slow speed = low volume delivery range, fast speed = high volume delivery range (2) 200ul source plate volume per well
Aqueous Solutions on Hydrophobic Pins in 96 Format Microplates(1)
Pin TypePin Diameter(mm)Shape96 Format Low Range(nL)²96 Format High Range(nL)²
FP90.229Solid1338
FP80.356Solid
FP10.457Solid2360
FP1S60.4576nL Slot3367
FP1S100.45710nL Slot4075
FP1S500.45750nL Slot86119
FP30.787Solid76209
FP3S1000.787100nL Slot188324
FP3S2000.787200nL Slot288436
FP3S5000.787500nL Slot473649
FP40.914Solid
Footnotes: (1) Delivery volume range is determined by speed of withdrawal from source liquid: Z-Speed Range = 1.5-30 mm/sec, slow speed = low volume delivery range, fast speed = high volume delivery range (2) 200ul source plate volume per well
Aqueous Solution on E-Clip, Uncoated Pins(1)
Pin TypePin Diameter(mm)ShapeLow Range(nL)²High Range(nL)²
FP1.58Solid Pointed175594
FPS.51.58500nL Slot524962
FPS1.581000nL Slot10561476
FPS21.582000nL Slot17392174
FPS51.585000nL Slot51504953
FP61.58Solid Flat465960
FP6S.51.58500nL Slot9341445
FP6S1.581000nL Slot13961930
FP6S21.582000nL Slot20722637
FP6S51.585000nL Slot48204693
Footnotes:(1) Delivery volume range is determined by speed of withdrawal from source liquid: Z-Speed Range = 1.5-30 mm/sec, slow speed = low volume delivery range, fast speed = high volume delivery range (2) 200ul source plate volume per well for 96 Format and 75ul source plate volume per well for 384 Format

DMSO Pin Transfer Volume Range Charts

Uncoated Pins in 96 and 384 Format Microplates(1)
Pin TypePin Diameter(mm)Shape96 Format Low Range(nL)²96 Format High Range(nL)²384 Format Low Range(nL)³384 Format High Range(nL)³
FP90.229Solid41038
FP80.35Solid1326618
FP10.457Solid18431131
FP1S60.4576nL Slot24491534
FP1S100.45710nL Slot30542140
FP1S200.45720nL Slot37612746
FP1S300.45730nL Slot46683554
FP1S400.45740nL Slot57784563
FP1S500.45750nL Slot70905675
FP30.787Solid671392979
FP40.91Solid941973498
FP3S1000.787100nL Slot175241114163
FP3S2000.787200nL Slot280332203250
FP3S5000.787500nL Slot535559427464
FP4S10000.911000nL Slot9401011704800
FP4S20000.912000nL Slot1518160812771362
Footnotes: (1) Delivery volume range is determined by speed of withdrawal from source liquid: Z-Speed Range = 1.5-30 mm/sec, slow speed = low volume delivery range, fast speed = high volume delivery range (2) 200ul source plate volume per well (3) 75ul source plate volume per well
Hydrophobic-coated Pins in 96 and 384 Format Microplates(1)
Pin TypePin Diameter (mm)Shape96 Format Low Range(nL)²96 Format High Range(nL)²384 Format Low Range(nL)³384 Format High Range(nL)³
FP9H0.229Solid41038
FP8H0.35Solid924617
FP1H0.457Solid1539927
FP1S6H0.4576nL Slot23491432
FP1S10H0.45710nL Slot29532038
FP1S20H0.45720nL Slot35592643
FP1S30H0.45730nL Slot47693553
FP1S40H0.45740nL Slot54754158
FP1S50H0.45750nL Slot69905773
FP3H0.787Solid671342776
FP4H0.91Solid9518932102
FP3S100H0.787100nL Slot170227108164
FP3S200H0.787200nL Slot266320190239
FP3S500H0.787500nL Slot520542416456
FP4S1000H0.911000nL Slot9321000741805
FP4S2000H0.912000nL Slot1571163813511423
Footnotes: (1) Delivery volume range is determined by speed of withdrawal from source liquid: Z-Speed Range = 1.5-30 mm/sec, slow speed = low volume delivery range, fast speed = high volume delivery range (2) 200ul source plate volume per well (3) 75ul source plate volume per well
E-Clip, Uncoated Pins, for 96 and 384 Format Microplates(1)
Pin TypeDiameter (mm)Shape96 Format Low Range(nL)²96 Format High Range(nL)²384 Format Low Range(nL)³384 Format High Range(nL)³
FP1.58Solid Pointed147411168395
FPS.51.58500nL Slot442704631843
FPS1.581000nL Slot893113013431498
FPS21.582000nL Slot1911203826072767
FPS51.585000nL Slot3908429651805253
FP61.58Solid Flat323674154398
FP6S.51.58500nL Slot73410428551053
FP6S1.581000nL Slot1210150016381717
FP6S21.582000nL Slot2299238427873068
FP6S51.585000nL Slot4329465652375245
Footnotes:(1) Delivery volume range is determined by speed of withdrawal from source liquid: Z-Speed Range = 1.5-30 mm/sec, slow speed = low volume delivery range, fast speed = high volume delivery range (2) 200ul source plate volume per well (3) 75ul source plate volume per well