{"product_id":"vacuum-pressure-bulb","title":"Heathrow Scientific 85 mL Vacuum\/Pressure Bulb | HS20631B","description":"\u003cdiv class=\"bts-heathrow-next20\" 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;\"\u003eManual gas handling, not a measuring device\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eProvide manual gas movement for sampling or apparatus work with an 85 mL natural-rubber bulb. Two rubber valves and PVC connections are built into this heavy-wall format.\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-VACUUM-PRESSURE-BULB-HS20631B_1045__68275.1717550496.jpg?v=1749331865\" alt=\"Heathrow Scientific 85 mL Vacuum\/Pressure Bulb | HS20631B — Manual gas handling, not a measuring device\" loading=\"lazy\" style=\"display:block;width:360px;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 view shows the bulb alone and with tubing. Tubing is not supplied.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003cdiv style=\"flex:1 1 280px;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;\"\u003eManual gas handling, not a measuring device\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eHS20631B is intended for gas sampling and for pumping gas through apparatus. The heavy-wall natural-rubber body is the hand-operated part of the arrangement, while the two valves and PVC connections provide the interfaces. The 85 mL figure describes bulb volume; it should not be treated as a calibrated dose, specified flow rate or pressure rating.\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;\"\u003eChoose the tubing connection before ordering\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe manufacturer lists a 7.4 mm hole diameter, an overall length of 106 mm and an outer diameter of 52 mm. Compare the actual connection geometry with the tubing and apparatus you intend to use. Tubing is not supplied. Leave a comfortable route for the line so the bulb can be operated without pulling on a glass connection.\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;\"\u003eMatch materials to the gas path\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eNatural rubber and PVC are the named materials in this assembly. Review both against the gas, vapour, temperature and cleaning procedure in your application. The product description does not establish universal chemical compatibility. For a sensitive gas path, make the material review part of selection rather than assuming every flexible bulb is interchangeable.\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;\"\u003eDistinguish a gas bulb from a pipette filler\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eA pressure\/vacuum bulb and a pipette filler solve different handling tasks. Choose this model for the stated gas-moving applications. If the intended job is filling and dispensing from a laboratory pipette, select a filler or controller designed for that task, with the appropriate pipette connection and operating controls. This order is one black HS20631B bulb.\u003c\/p\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;\"\u003eConfirm the order unit\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eHS20631B — 1 Each. \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;\"\u003eRelated choices for your workflow\u003c\/h2\u003e\n\u003cdiv style=\"border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ca style=\"color:#245B45;text-decoration:underline;font-weight:600;\" href=\"\/products\/safety-bulb-pipette-filler\"\u003eHeathrow Scientific Safety Bulb Pipette Fillers – 3 Pack\u003c\/a\u003e\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eFor filling laboratory pipettes, choose a purpose-built pipette filler rather than treating the gas bulb as the same device.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:3px solid #B7D0BF;padding:2px 0 2px 18px;margin:20px 0;\"\u003e\n\u003ca style=\"color:#245B45;text-decoration:underline;font-weight:600;\" href=\"\/products\/rf1000-manual-pipette-controller\"\u003eHeathrow Scientific RF1000 Manual Pipette Controller | HS1000RFU\u003c\/a\u003e\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eCompare a manual controller when pipette filling and dispensing controls are the actual requirement.\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\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;\"\u003eWhat does this bulb do?\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;\"\u003eIt provides manual gas movement for sampling or pumping gas through apparatus.\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;\"\u003eIs 85 mL a calibrated delivery volume?\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;\"\u003eNo calibrated delivery volume is specified. The published figure is the bulb volume.\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 are the materials?\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;\"\u003eThe bulb is natural rubber, with two rubber valves and PVC connections.\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;\"\u003eIs tubing included?\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;\"\u003eNo. Tubing is not supplied with HS20631B.\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 connection size is listed?\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;\"\u003eThe manufacturer lists a 7.4 mm hole diameter. Confirm the actual tubing fit for your apparatus.\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 it be used with any gas or solvent vapour?\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;\"\u003eDo not assume universal compatibility. Check the intended gas path against natural rubber and PVC.\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;\"\u003eIs this a pipette controller?\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;\"\u003eNo. It is a vacuum\/pressure bulb for gas-handling applications, not a calibrated pipette controller.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Heathrow Scientific","offers":[{"title":"Default Title","offer_id":50280211251498,"sku":"BTS-HS20631B","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Heathrow-Scientific-VACUUM-PRESSURE-BULB-HS20631B_1045__68275.1717550496.jpg?v=1749331865","url":"https:\/\/bluetigerscientific.com\/products\/vacuum-pressure-bulb","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}