{"product_id":"50-ml-sterile-conical-centrifuge-tubes-black","title":"Heathrow Scientific 50 mL Black Conical Tubes | HS4429","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;\"\u003eMove to 50 mL without losing the black-tube format\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eChoose black 50 mL conical tubes for larger-volume light-sensitive sample workflows with clear external identification.\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\/gallery-40354977022250-square.jpg?v=1791669120\" alt=\"Heathrow Scientific 50 mL Black Conical Tubes | HS4429 — Move to 50 mL without losing the black-tube format\" 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;\"\u003eActual manufacturer product view. The order unit and supplied contents are stated below.\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;\"\u003eMove to 50 mL without losing the black-tube format\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eHS4429 provides the black body of the light-sensitive-sample range in a 50 mL conical format. The writing area and flat cap give two places for sample identification when the opaque wall makes direct visual inspection less useful. This is the conical black version, not the clear skirted self-standing tube shown elsewhere in the catalog. The selected rack and rotor support should suit that distinction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;align-items:center;gap:28px;margin:24px 0;\"\u003e\n\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;\"\u003eConfirm close-fit dimensions before choosing adapters\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe current webpage lists a 30 mm outer diameter and 115 mm height, while the catalog lists 29 mm and 114 mm. The difference matters in a closely fitted adapter, so confirm the exact current tube dimensions for that application rather than treating either source as a universal fit guarantee. The maximum RCF is consistently 9,400 × g; follow the lower applicable limit of the tube, rotor and validated procedure.\u003c\/p\u003e\n\u003c\/div\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\/gallery-40354977055018-square.jpg?v=1791669124\" alt=\"Heathrow Scientific 50 mL Black Conical Tubes | HS4429 — Confirm close-fit dimensions before choosing adapters\" 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;\"\u003eActual manufacturer product view. The order unit and supplied contents are stated below.\u003c\/figcaption\u003e\u003c\/figure\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;\"\u003eKeep packaging and handling expectations clear\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eThe catalog specifies 500 tubes per case in bulk packs of 25, and the product page identifies sterile, disposable polypropylene construction. Lot-to-lot traceability and easy-tear packaging help organize received stock and working supplies. A bulk pack is not a set of individually wrapped tubes. Autoclavability is listed, but no process-specific time\/temperature cycle or repeated-use claim is added here.\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;\"\u003eOrder the intended pack\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eHS4429: 50 mL Black Conical Tubes | HS4429 — 500 tubes (20 × 25).\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\/50-ml-conical-centrifuge-tubes-sterile\"\u003eHeathrow Scientific 50 mL Sterile Centrifuge Tubes\u003c\/a\u003e\u003cp style=\"margin:0 0 16px;line-height:1.7;\"\u003eChoose the live clear 50 mL family when visual inspection or a different supplied presentation is the priority.\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;\"\u003eIs HS4429 self-standing?\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;\"\u003eThis is the black conical version, not the separate clear skirted self-standing model.\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 RCF?\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;\"\u003e9,400 × g, subject to the lower limits of the complete centrifuge setup and procedure.\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;\"\u003eWhy are exact dimensions qualified?\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 webpage gives 30 × 115 mm while the catalog gives 29 × 114 mm. Confirm fit for a close-clearance adapter.\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;\"\u003eHow many tubes are supplied?\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;\"\u003e500 per case, with the catalog listing bulk packs of 25.\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;\"\u003eAre these sterile?\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;\"\u003eYes.\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 there a writing area?\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;\"\u003eYes. A writing area and flat lids support external labeling.\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;\"\u003eDoes black mean a specified optical barrier?\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 catalog positions black tubes for light-sensitive samples, but no quantitative light-blocking specification is asserted here.\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":50280234320170,"sku":"BTS-HS4429","price":337.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/gallery-40354977022250-square.jpg?v=1791669120","url":"https:\/\/bluetigerscientific.com\/products\/50-ml-sterile-conical-centrifuge-tubes-black","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}