{"product_id":"stir-bars-with-center-pivot-ring","title":"Heathrow Scientific Stir Bars with Center Pivot Ring – Pack of 10","description":"\u003cdiv class=\"bts-heathrow-accent-one\" style=\"box-sizing:border-box;max-width:1100px;margin:0 auto;padding:12px 0;background:#fff;color:#26332C;font-family:Open Sans,sans-serif;font-size:16px;font-weight:400;line-height:1.7;\"\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003ePTFE-coated stir bars with a center pivot ring, in six sizes\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eA stir bar earns its keep when it keeps spinning. Heathrow Scientific’s Stir Bars with Center Pivot Ring are octagonal white PTFE-encapsulated magnets with a pivot ring at the center, sold in packs of 10 in six sizes from 10 x 5 mm to 35 x 9 mm.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin:24px 0;\"\u003e\n\u003cfigure style=\"box-sizing:border-box;flex:1 1 260px;min-width:0;margin:0;text-align:center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Heathrow-Scientific-STIR-BARS-WITH-CENTER-PIVOT-RING-_1179__74461.1717550083.jpg?v=1749333782\" alt=\"Manufacturer photograph of Heathrow stir bars with center pivot ring\" loading=\"lazy\" style=\"display:block;width:340px;max-width:100%;height:auto;margin:0 auto;\"\u003e\u003cfigcaption style=\"font-size:13px;line-height:1.5;color:#59665F;max-width:440px;margin:12px auto 0;\"\u003eManufacturer photograph of the stir bars (family image).\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cdiv style=\"flex:1 1 300px;min-width:0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eChoose your size\u003c\/h3\u003e\n\u003cul style=\"margin:0 0 16px;padding-left:22px;line-height:1.7;\"\u003e\n\u003cli\u003e10 x 5 mm (120547)\u003c\/li\u003e\n\u003cli\u003e20 x 8 mm (120548)\u003c\/li\u003e\n\u003cli\u003e25 x 8 mm (120549)\u003c\/li\u003e\n\u003cli\u003e28 x 8 mm (120550)\u003c\/li\u003e\n\u003cli\u003e30 x 8 mm (120551)\u003c\/li\u003e\n\u003cli\u003e35 x 9 mm (120552)\u003c\/li\u003e\n\u003cli\u003eAll: white, octagonal, pack of 10\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eSizes are length x width.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003eBuilt to keep coupling\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eHeathrow lists these features:\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin:24px 0;\"\u003e\n\u003cfigure style=\"box-sizing:border-box;flex:1 1 260px;min-width:0;margin:0;text-align:center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Heathrow-Scientific-STIR-BARS-WITH-CENTER-PIVOT-RING-_1180__00775.1717550086.jpg?v=1749333782\" alt=\"Manufacturer image of stir bars with center pivot ring\" loading=\"lazy\" style=\"display:block;width:340px;max-width:100%;height:auto;margin:0 auto;\"\u003e\u003cfigcaption style=\"font-size:13px;line-height:1.5;color:#59665F;max-width:440px;margin:12px auto 0;\"\u003eManufacturer image of the stir bars.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cdiv style=\"flex:1 1 300px;min-width:0;\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"box-sizing:border-box;border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eALNICO magnet\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe magnet is ALNICO, which Heathrow calls one of the strongest permanent magnets available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"box-sizing:border-box;border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eSintered construction\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eHeathrow says the sintered manufacturing process reduces decoupling, or “spin outs”, that weaker stir bars often suffer from.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"box-sizing:border-box;border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eCenter pivot ring\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe low-friction octagonal shape with a center pivot ring is described as creating a strong vortex, including with more viscous solutions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003eEncapsulation and temperature\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe stir bar is encapsulated in PTFE, which Heathrow says protects both the magnet and the material being stirred and is chemically inert and easy to clean. The maximum temperature is listed as 250°C, and the bars are suitable for heated and unheated stirrers. Heathrow does not publish chemical compatibility details beyond this.\u003c\/p\u003e\n\u003ch2 style=\"font-family:Open Sans,sans-serif;font-size:24px;line-height:1.35;font-weight:600;color:#245B45;margin:30px 0 14px;border-bottom:1px solid #B7D0BF;padding-bottom:10px;\"\u003eSizes\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eSizes as listed by Heathrow (length x width):\u003c\/p\u003e\n\u003cul style=\"margin:0 0 16px;padding-left:22px;line-height:1.7;\"\u003e\n\u003cli\u003e10 x 5 mm\u003c\/li\u003e\n\u003cli\u003e20 x 8 mm (0.8 x 0.3 in)\u003c\/li\u003e\n\u003cli\u003e25 x 8 mm (1 x 0.3 in)\u003c\/li\u003e\n\u003cli\u003e28 x 8 mm (1.1 x 0.3 in)\u003c\/li\u003e\n\u003cli\u003e30 x 8 mm (1.2 x 0.3 in)\u003c\/li\u003e\n\u003cli\u003e35 x 9 mm (1.4 x 0.4 in)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"box-sizing:border-box;background:#F1F7F3;border-left:4px solid #245B45;padding:20px;margin:28px 0;\"\u003e\n\u003ch3 style=\"font-family:Open Sans,sans-serif;font-size:18px;line-height:1.4;font-weight:600;color:#245B45;margin:0 0 10px;\"\u003eOrdering stir bars\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003e\u003cstrong\u003eEach order is a pack of 10 stir bars.\u003c\/strong\u003e Choose the size on this page. Blue Tiger Scientific confirms availability and delivery details with your order.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq_block\" style=\"border-top: 1px solid #e0e0e0; margin-top: 40px; padding-top: 20px;\"\u003e\u003cdiv itemscope=\"\" itemtype=\"https:\/\/schema.org\/FAQPage\" style=\"width: 100%; padding: 20px 0; font-family: 'Open Sans', sans-serif; font-weight: 300; color: #333;\"\u003e\n\u003ch3 style=\"font-size: 1.1rem; font-weight: 600; margin: 0 0 16px 0;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eHow many stir bars come in one order?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eA pack of 10 in every size.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eWhat sizes are available?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003e10 x 5 mm, 20 x 8 mm, 25 x 8 mm, 28 x 8 mm, 30 x 8 mm and 35 x 9 mm (length x width).\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eWhat is the magnet made of?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eALNICO, encapsulated in PTFE.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eWhat shape are they?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eHeathrow describes an octagonal cylinder with a center pivot ring.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eWhat is the maximum temperature?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eHeathrow lists 250°C.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eCan I use them on a heated stirrer?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eHeathrow states they are suitable for both unheated and heated stirrers.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eDo they work with viscous solutions?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eHeathrow says the shape creates a strong vortex, including with more viscous solutions.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemprop=\"mainEntity\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Question\" style=\"border: 1px solid #e0e0e0; border-radius: 8px; margin: 0 0 10px 0; background: #fff;\"\u003e\u003csummary itemprop=\"name\" style=\"cursor: pointer; padding: 14px 16px; font-size: 1rem; font-weight: 600; list-style-position: inside;\"\u003eWhat color are they?\u003c\/summary\u003e\u003cdiv itemprop=\"acceptedAnswer\" itemscope=\"\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding: 0 16px 14px 16px;\"\u003e\u003cp itemprop=\"text\" style=\"font-size: 0.97rem; line-height: 1.6; margin: 0;\"\u003eWhite.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Heathrow Scientific","offers":[{"title":"10 x 5 mm (0.4 x 0.5 in)","offer_id":50280263188778,"sku":"BTS-120547","price":40.0,"currency_code":"USD","in_stock":true},{"title":"20 x 8 mm (0.8 x 0.3 in)","offer_id":50280263221546,"sku":"BTS-120548","price":47.0,"currency_code":"USD","in_stock":true},{"title":"25 x 8 mm (1 x 0.3 in)","offer_id":50280263254314,"sku":"BTS-120549","price":58.0,"currency_code":"USD","in_stock":true},{"title":"28 x 8 mm (1.1 x 0.3 in)","offer_id":50280263287082,"sku":"BTS-120550","price":70.0,"currency_code":"USD","in_stock":true},{"title":"30 x 8 mm (1.2 x 0.3 in)","offer_id":50280263319850,"sku":"BTS-120551","price":81.0,"currency_code":"USD","in_stock":true},{"title":"35 x 9 mm (1.4 x 0.4 in)","offer_id":50280263352618,"sku":"BTS-120552","price":93.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/heathrow-square-40355037610282.jpg?v=1791811357","url":"https:\/\/bluetigerscientific.com\/products\/stir-bars-with-center-pivot-ring","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}