VWR® Spinbar® Magnetic Stir Bars, Octagon, PTFE-Coated
About this item
Octagonal magnetic stir bars provide consistent, low-friction mixing for routine laboratory applications requiring reliable agitation and suspension.
- PTFE coating provides a durable, inert contact surface for chemical resistance
- Octagon shape improves turbulence for efficient liquid movement
- Alnico magnet offers strong coupling
- Pivot ring reduces friction and chatter
- Autoclavable construction supports reuse in sterile or high-temperature workflows
These stir bars support everyday mixing tasks such as buffer preparation, dissolving reagents, and maintaining suspensions across chemistry and life science workflows.
The PTFE coating provides a durable, inert surface that resists chemical interaction, while the Alnico magnet ensures stable magnetic coupling. The octagonal profile increases surface interaction compared to cylindrical bars, improving mixing efficiency.
Select size based on vessel diameter and fill volume to maintain proper vortex formation. Pivot ring options help reduce friction and improve rotation stability in flat-bottom vessels.
Product Details
Octagonal magnetic stir bars provide consistent, low-friction mixing for routine laboratory applications requiring reliable agitation and suspension.
- PTFE coating provides a durable, inert contact surface for chemical resistance
- Octagon shape improves turbulence for efficient liquid movement
- Alnico magnet offers strong coupling
- Pivot ring reduces friction and chatter
- Autoclavable construction supports reuse in sterile or high-temperature workflows
These stir bars support everyday mixing tasks such as buffer preparation, dissolving reagents, and maintaining suspensions across chemistry and life science workflows.
The PTFE coating provides a durable, inert surface that resists chemical interaction, while the Alnico magnet ensures stable magnetic coupling. The octagonal profile increases surface interaction compared to cylindrical bars, improving mixing efficiency.
Select size based on vessel diameter and fill volume to maintain proper vortex formation. Pivot ring options help reduce friction and improve rotation stability in flat-bottom vessels.
Documents
Documents
Certificates
Search by Lot Number58948-116_P 58948-138_P 58948-171_P 58948-193_P 58948-273_P
BSE/TSE Certificates
Product Family Options
Product Information
- ShapeLengthØCoatingAvailabilityPrice
- Octagon12 mm (½")3 mm (1/8 ")PTFEIn Stock at VWRIn Stock at VWREach$21.64 / EachIn Stock at VWR$21.64Case of 50$1,082.00 / Case of 50In Stock at VWR$1,082.00Each$21.64Case of 50$1,082.00Octagon12 mm (½")3 mm (1/8 ")PTFE
- Octagon12 mm (½")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$13.25 / EachIn Stock at VWR$13.25Case of 50$662.50 / Case of 50In Stock at VWR$662.50Each$13.25Case of 50$662.50Octagon12 mm (½")7.9 mm (5/16 ")PTFE
- Octagon16 mm (⁵/₈")7.9 mm (⁵/₁₆")PTFEIn Stock at VWRIn Stock at VWREach$12.65 / EachIn Stock at VWR$12.65Case of 50$632.50 / Case of 50In Stock at VWR$632.50Each$12.65Case of 50$632.50Octagon16 mm (⁵/₈")7.9 mm (⁵/₁₆")PTFE
- Octagon22 mm (⅞")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$11.43 / EachIn Stock at VWR$11.43Case of 50$571.50 / Case of 50In Stock at VWR$571.50Each$11.43Case of 50$571.50Octagon22 mm (⅞")7.9 mm (5/16 ")PTFE
- Octagon25 mm (1")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$14.73 / EachIn Stock at VWR$14.73Case of 50$736.50 / Case of 50In Stock at VWR$736.50Each$14.73Case of 50$736.50Octagon25 mm (1")7.9 mm (5/16 ")PTFE
- Octagon28 mm (1⅛")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$14.47 / EachIn Stock at VWR$14.47Case of 50$723.50 / Case of 50In Stock at VWR$723.50Each$14.47Case of 50$723.50Octagon28 mm (1⅛")7.9 mm (5/16 ")PTFE
- Octagon38.1 mm (1½")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$21.14 / EachIn Stock at VWR$21.14Case of 50$1,057.00 / Case of 50In Stock at VWR$1,057.00Each$21.14Case of 50$1,057.00Octagon38.1 mm (1½")7.9 mm (5/16 ")PTFE
- Octagon41 mm (1⅝")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$11.94 / EachIn Stock at VWR$11.94Case of 50$597.00 / Case of 50In Stock at VWR$597.00Each$11.94Case of 50$597.00Octagon41 mm (1⅝")7.9 mm (5/16 ")PTFE
- Octagon51 mm (2")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$27.40 / EachIn Stock at VWR$27.40Case of 50$1,370.00 / Case of 50In Stock at VWR$1,370.00Each$27.40Case of 50$1,370.00Octagon51 mm (2")7.9 mm (5/16 ")PTFE
- Octagon51 mm (2")7.9 mm (5/16 ")PTFEOn OrderPack of 100$1,181.81 / Pack of 100On Order$1,181.81Pack of 100$1,181.81Octagon51 mm (2")7.9 mm (5/16 ")PTFE
- Octagon64 mm (2½")7.9 mm (5/16 ")PTFEIn Stock at VWRIn Stock at VWREach$39.08 / EachIn Stock at VWR$39.08Case of 50$1,954.00 / Case of 50In Stock at VWR$1,954.00Each$39.08Case of 50$1,954.00Octagon64 mm (2½")7.9 mm (5/16 ")PTFE
- Octagon12 mm (½")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$26.52 / EachIn Stock at VWR$26.52Case of 50$1,326.00 / Case of 50In Stock at VWR$1,326.00Each$26.52Case of 50$1,326.00Octagon12 mm (½")9.5 mm (3/8 ")PTFE
- Octagon15 mm (⅝”)9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$16.72 / EachIn Stock at VWR$16.72Case of 50$836.00 / Case of 50In Stock at VWR$836.00Each$16.72Case of 50$836.00Octagon15 mm (⅝”)9.5 mm (3/8 ")PTFE
- Octagon22 mm (⅞")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$13.65 / EachIn Stock at VWR$13.65Case of 50$682.50 / Case of 50In Stock at VWR$682.50Each$13.65Case of 50$682.50Octagon22 mm (⅞")9.5 mm (3/8 ")PTFE
- Octagon25 mm (1")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$28.08 / EachIn Stock at VWR$28.08Case of 50$1,404.00 / Case of 50In Stock at VWR$1,404.00Each$28.08Case of 50$1,404.00Octagon25 mm (1")9.5 mm (3/8 ")PTFE
- Octagon35 mm (1⅜")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$21.94 / EachIn Stock at VWR$21.94Case of 50$1,097.00 / Case of 50In Stock at VWR$1,097.00Each$21.94Case of 50$1,097.00Octagon35 mm (1⅜")9.5 mm (3/8 ")PTFE
- Octagon38.1 mm (1½")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$19.50 / EachIn Stock at VWR$19.50Case of 50$975.00 / Case of 50In Stock at VWR$975.00Each$19.50Case of 50$975.00Octagon38.1 mm (1½")9.5 mm (3/8 ")PTFE
- Octagon47.6 mm (1⅞")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$28.84 / EachIn Stock at VWR$28.84Case of 50$1,442.00 / Case of 50In Stock at VWR$1,442.00Each$28.84Case of 50$1,442.00Octagon47.6 mm (1⅞")9.5 mm (3/8 ")PTFE
- Octagon51 mm (2")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$36.68 / EachIn Stock at VWR$36.68Case of 50$1,834.00 / Case of 50In Stock at VWR$1,834.00Each$36.68Case of 50$1,834.00Octagon51 mm (2")9.5 mm (3/8 ")PTFE
- Octagon64 mm (2½")9.5 mm (3/8 ")PTFEIn Stock at VWRIn Stock at VWREach$43.12 / EachIn Stock at VWR$43.12Case of 50$2,156.00 / Case of 50In Stock at VWR$2,156.00Each$43.12Case of 50$2,156.00Octagon64 mm (2½")9.5 mm (3/8 ")PTFE
- Octagon38.1 mm (1½")12 mm (1/2")PTFEIn Stock at VWRIn Stock at VWREach$57.50 / EachIn Stock at VWR$57.50Case of 50$2,875.00 / Case of 50In Stock at VWR$2,875.00Each$57.50Case of 50$2,875.00Octagon38.1 mm (1½")12 mm (1/2")PTFE
- Octagon76 mm (3")12 mm (1/2")PTFEIn Stock at VWRIn Stock at VWREach$92.05 / EachIn Stock at VWR$92.05Case of 50$4,602.50 / Case of 50In Stock at VWR$4,602.50Each$92.05Case of 50$4,602.50Octagon76 mm (3")12 mm (1/2")PTFE
- OctagonAssortmentPTFEIn Stock at VWRIn Stock at VWRPack of 6$99.36 / Pack of 6In Stock at VWR$99.36Case of 120$1,987.20 / Case of 120In Stock at VWR$1,987.20Pack of 6$99.36Case of 120$1,987.20OctagonAssortmentPTFE
- OctagonAssortmentPTFEIn Stock at VWRIn Stock at VWRPack of 12$321.00 / Pack of 12In Stock at VWR$321.00Case of 72$1,926.00 / Case of 72In Stock at VWR$1,926.00Pack of 12$321.00Case of 72$1,926.00OctagonAssortmentPTFE