0102030405
High-Quality Strong Lab White PTFE Coated Magnetic Stir Bar from Reliable China Suppliers and Factory
PTFE Magnetic Stir Bar
- Polytetrafluoroethylene material
- Super strong magnetic force
- Non stick lubrication
- Complete specifications
Type A
Type B
Type C
Cross Shape
Gear Shape
H Shape
S Shape
Ball Shape
Color Type
PTFE Magnetic Stir Bar Set
Product Name:
PTFE Magnetic Stir Bar
Product Type:
Type A(Egg Shape), Type B(Cylindrical Shape with Centre Pivot), Type C(Cylindrical Shape), Cross Shape, Gear Shape, H Shape, S Shape, Ball Shape, Color Type, Set A, Set B, Set C.
Product Material:
PTFE+Magnet（N35）
Product Introduction:
PTFE has good chemical resistance and can tolerate almost all chemical solvents. Appearance pure white, high temperature resistance -200~+250℃, short-term resistance to 300℃ on electric heating plate: low temperature resistance:-196°C can maintain an elongation of 5%, it needs to be used on asbestos mesh and should not be directly exposed to open flames. High lubrication: the lowest friction coefficient in solid materials, non adhesive: does not adhere to any substance; Strong self lubrication: The friction coefficient in solid materials is 0.04.
Product Features:
The PTFE Magnetic Stir Bar is made of refined PTFE and high-quality permanent magnetic steel, which has the advantages of wear resistance, high temperature resistance, chemical corrosion resistance, non toxicity, strong stirring force, stable operation, excellent manufacturing, novel style, scientific and beautiful appearance.
Product Show
- Strong magnetic force
- High lubrication, non stick and non damaging to glass
- Corrosion resistance
Type A Show
Type B Show
Type C Show
Cross Shape Show
Gear Shape Show
H Shape Show / S Shape Show
Color Tape Show / Ball Shape Show
Type A Set Show
Type B Set Show
Type C Set Show
Packing Show
Magnetic Stir Bar Specs
| Item | Description | Picture | PN | Spec | Dia (mm) | Length (mm) | Weight(g) |
| 1 | PTFE Magnetic Stir Bar Type A (Egg Shape) |
|
B00101 | A3*5 | 3 | 5 | 0.06 |
| B00102 | A5*7 | 5 | 7 | 0.3 | |||
| B00103 | A4*8 | 4 | 8 | 0.2 | |||
| B00104 | A5*10 | 6 | 8 | 0.4 | |||
| B00105 | A6*8 | 6 | 8 | 0.5 | |||
| B00106 | A6*10 | 6 | 10 | 0.6 | |||
| B00107 | A7*15 | 7 | 15 | 1.2 | |||
| B00108 | A8*20 | 8 | 20 | 2.2 | |||
| B00109 | A9*20 | 9 | 20 | 3 | |||
| B00110 | A9*25 | 9 | 25 | 3.5 | |||
| B00111 | A10*25 | 10 | 25 | 4.3 | |||
| B00112 | A10*30 | 10 | 30 | 5.3 | |||
| B00113 | A12*35 | 12 | 35 | 8.6 | |||
| B00114 | A13*35 | 13 | 35 | 9.6 | |||
| B00115 | A15*40 | 15 | 40 | 13.8 | |||
| B00116 | A15*45 | 15 | 45 | 15.4 | |||
| B00117 | A17*50 | 17 | 50 | 21.5 | |||
| B00118 | A18*60 | 18 | 60 | 31.9 | |||
| B00119 | A18*70 | 18 | 70 | 40 | |||
| B00120 | A25*70 | 25 | 70 | 66.4 | |||
| B00121 | A25*100 | 25 | 100 | 90 | |||
| 2 | PTFE Magnetic Stir Bar Type B (Cylindrical Shape with Centre Pivot) |
|
B00201 | B3*6 | 3 | 6 | 0.15 |
| B00202 | B4*8 | 4 | 8 | 0.4 | |||
| B00203 | B4*10 | 4 | 10 | 0.4 | |||
| B00204 | B5*10 | 5 | 10 | 0.6 | |||
| B00205 | B5*15 | 5 | 15 | 1.1 | |||
| B00206 | B5*20 | 5 | 20 | 1.44 | |||
| B00207 | B6*12 | 6 | 12 | 0.96 | |||
| B00208 | B6*15 | 6 | 15 | 1.5 | |||
| B00209 | B6*20 | 6 | 20 | 2.2 | |||
| B00210 | B6*25 | 6 | 25 | 2.5 | |||
| B00211 | B6*30 | 6 | 30 | 3.5 | |||
| B00212 | B7*20 | 7 | 20 | 2.6 | |||
| B00213 | B7*25 | 7 | 25 | 3.1 | |||
| B00214 | B7*30 | 7 | 30 | 4 | |||
| B00215 | B7*35 | 7 | 35 | 4.7 | |||
| B00216 | B8*15 | 8 | 15 | 2.3 | |||
| B00217 | B8*20 | 8 | 20 | 3.5 | |||
| B00218 | B8*25 | 8 | 25 | 4.4 | |||
| B00219 | B8*30 | 8 | 30 | 5.1 | |||
| B00220 | B8*35 | 8 | 35 | 6.6 | |||
| B00221 | B8*40 | 8 | 40 | 7.6 | |||
| B00222 | B8*45 | 8 | 45 | 7.6 | |||
| B00223 | B8*50 | 8 | 50 | 8.9 | |||
| B00224 | B9*25 | 9 | 25 | 5 | |||
| B00225 | B9*30 | 9 | 30 | 6.2 | |||
| B00226 | B9*35 | 9 | 35 | 7.6 | |||
| B00227 | B9*40 | 9 | 40 | 9.9 | |||
| B00228 | B9*45 | 9 | 45 | 10 | |||
| B00229 | B9*50 | 9 | 50 | 10.7 | |||
| B00230 | B9*55 | 9 | 55 | 11.2 | |||
| B00231 | B9*65 | 9 | 65 | 14.2 | |||
| B00232 | B10*40 | 10 | 40 | 11.2 | |||
| B00233 | B10*50 | 10 | 50 | 14.2 | |||
| B00234 | B10*60 | 10 | 60 | 14.4 | |||
| B00235 | B10*70 | 10 | 70 | 19.7 | |||
| B00236 | B10*80 | 10 | 80 | 22.4 | |||
| B00237 | B10*100 | 10 | 100 | 27.8 | |||
| B00238 | B12*55 | 12 | 55 | 23.2 | |||
| 3 | PTFE Magnetic Stir Bar Type C (Cylindrical Shape) |
|
B00301 | C3*5 | 3 | 5 | 0.11 |
| B00302 | C3*6 | 3 | 6 | 0.14 | |||
| B00303 | C3*7 | 3 | 7 | 0.15 | |||
| B00304 | C3*9 | 3 | 9 | 0.23 | |||
| B00305 | C3*10 | 3 | 10 | 0.3 | |||
| B00306 | C3*12 | 3 | 12 | 0.3 | |||
| B00307 | C3*15 | 3 | 15 | 0.35 | |||
| B00308 | C4*8 | 4 | 8 | 0.3 | |||
| B00309 | C4*10 | 4 | 10 | 0.5 | |||
| B00310 | C5*15 | 5 | 15 | 1 | |||
| B00311 | C5*20 | 5 | 20 | 1.2 | |||
| B00312 | C6*10 | 6 | 10 | 0.9 | |||
| B00313 | C6*15 | 6 | 15 | 0.5 | |||
| B00314 | C6*20 | 6 | 20 | 2.1 | |||
| B00315 | C6*25 | 6 | 25 | 2.4 | |||
| B00316 | C6*30 | 6 | 30 | 3.4 | |||
| B00317 | C7*18 | 7 | 18 | 2.1 | |||
| B00318 | C7*20 | 7 | 20 | 2.5 | |||
| B00319 | C7*22 | 7 | 22 | 3 | |||
| B00320 | C7*25 | 7 | 25 | 3 | |||
| B00321 | C7*30 | 7 | 30 | 4 | |||
| B00322 | C8*20 | 8 | 20 | 3.6 | |||
| B00323 | C8*25 | 8 | 25 | 4.3 | |||
| B00324 | C8*30 | 8 | 30 | 5.1 | |||
| B00325 | C8*35 | 8 | 35 | 6.5 | |||
| B00326 | C8*40 | 8 | 40 | 7.7 | |||
| B00327 | C8*45 | 8 | 45 | 8 | |||
| B00328 | C8*50 | 8 | 50 | 8.5 | |||
| B00329 | C8*60 | 8 | 60 | 11.1 | |||
| B00330 | C9*40 | 9 | 40 | 11.8 | |||
| B00331 | C9*45 | 9 | 45 | 10 | |||
| B00332 | C9*50 | 9 | 50 | 10.5 | |||
| B00333 | C10*40 | 10 | 40 | 11.7 | |||
| B00334 | C10*50 | 10 | 50 | 14.5 | |||
| B00335 | C10*60 | 10 | 60 | 16.8 | |||
| B00336 | C10*70 | 10 | 70 | 19.2 | |||
| B00337 | C10*80 | 10 | 80 | 23.2 | |||
| B00338 | C10*100 | 10 | 100 | 27.7 | |||
| B00339 | C16*35 | 16 | 35 | 22 | |||
| 4 | PTFE Magnetic Stir Bar Type D (Cross Shape) |
|
B00401 | 10*10 | 10 | 10 | 0.53 |
| B00402 | 15*15 | 15 | 15 | 3.3 | |||
| B00403 | 20*20 | 20 | 20 | 5.2 | |||
| B00404 | 25*25 | 25 | 25 | 8.6 | |||
| B00405 | 30*30 | 30 | 30 | 10 | |||
| B00406 | 35*35 | 35 | 35 | 13.4 | |||
| B00407 | 40*40 | 40 | 40 | 18.4 | |||
| 5 | PTFE Magnetic Stir Bar Type E (Gear Shape) |
|
B00501 | 7*40 | 40 | / | 12.1 |
| 6 | PTFE Magnetic Stir Bar Type F (H Shape) |
|
B00601 | 10*20 | 10 | 20 | 3.3 |
| B00602 | 12*26 | 12 | 26 | 5.8 | |||
| B00603 | 13*33 | 13 | 33 | 10 | |||
| B00604 | 13*40 | 13 | 40 | 13.7 | |||
| 7 | PTFE Magnetic Stir Bar Type G (S Shape) |
|
B00701 | 10*10*25 | 10 | 25 | 5.4 |
| B00702 | 13*13*40 | 13 | 25 | 12.1 | |||
| B00703 | 15*15*50 | 13 | 25 | 19.9 | |||
| 8 | PTFE Magnetic Stir Bar Type H (Ball Shape) |
|
B00801 | 12 | 12 | 12 | 2.5 |
| 9 | Color PTFE Magnetic Stir Bar |
|
B00901 | B8*25 | 8 | 25 | 4.2 |
| B00902 | B8*25 | 8 | 25 | 4.2 | |||
| B00903 | B8*25 | 8 | 25 | 4.2 | |||
| B00904 | B8*25 | 8 | 25 | 4.2 | |||
| 10 | Glass Magnetic Stir Bar |
|
B01001 | 8*32 | 8 | 32 | 5.9 |
| B01002 | 8*40 | 8 | 40 | 7.5 | |||
| B01003 | 10*32 | 10 | 32 | 6.9 | |||
| 11 | PTFE Magnetic Stir Bar Set Type A |
|
B02001 | A6*10 A7*15 A8*20 A10*25 A10*30 A10*30 A12*35 A15*40 | / | / | 76 |
| 12 | PTFE Magnetic Stir Bar Set Type B |
|
B02002 | B4*10 B6*15 B7*20 B7*25 B7*30 B8*30 B8*35 | / | / | 46 |
| 13 | PTFE Magnetic Stir Bar Set Type C |
|
C4*10 C6*15 C7*20 C7*25 C7*30 C8*30 C8*35 | / | / | 43 |
Product Selection
Shape selection
Type A is suitable for use in round bottomed containers, Type B is suitable for flat bottomed containers. Type C is suitable for cylindrical containers with low concentration and concave convex flat bottoms.
Length selection
Generally, the length of the stirrer is selected based on 1/2 or 1/3 of the outer diameter of the container.
Selection of diameter
Determine based on the concentration of the stirred solution, and if the concentration is high, choose a larger diameter as much as possible.
Frequently Asked Questions (FAQ)
What materials are these magnetic stir bars made of?
They are constructed with a high-quality permanent magnetic steel core (N35 Magnet) encapsulated in refined Polytetrafluoroethylene (PTFE) material, which provides excellent chemical resistance and high durability.
What is the temperature range these stir bars can withstand?
These PTFE stir bars feature exceptional thermal stability, resisting temperatures from -200°C up to +250°C (with short-term tolerance up to 300°C on electric heating plates). At extremely low temperatures of -196°C, they still maintain a 5% elongation rate.
Can I use these stir bars directly over an open flame?
No, they should never be exposed directly to open flames. They must be used on an asbestos mesh or a suitable flat heating plate to distribute heat evenly and prevent damage to the PTFE coating.
How do I choose the correct shape of a stir bar for my experiment?
Shape selection depends on your container type: Type A (Egg Shape) is ideal for round-bottomed vessels; Type B (Cylindrical with Centre Pivot) works best with flat-bottomed containers; Type C (Cylindrical) is designed for cylindrical containers with low-concentration mixtures.
How do I determine the right size (length and diameter) of the stir bar?
As a general rule, choose a stir bar length that is 1/2 to 1/3 of the outer diameter of your container. For the diameter, high-viscosity or high-concentration solutions require a larger diameter to provide sufficient stirring force.
Are these stir bars compatible with highly corrosive chemicals?
Yes. PTFE is chemically inert and has outstanding corrosion resistance, allowing it to withstand almost all chemical solvents without reacting or degrading.