{"product_id":"15-ml-microcentrifuge-tubes-black","title":"Heathrow Scientific Black 1.5 mL Microcentrifuge Tubes – 500 Pack","description":"\u003cdiv class=\"bts-heathrow-details\" style=\"font-family:Open Sans,Arial,sans-serif;max-width:1400px;margin:0 auto;padding:24px 16px;color:#252525;line-height:1.75;box-sizing:border-box;\"\u003e\n\u003cp style=\"font-size:12px;letter-spacing:2px;font-weight:700;color:#48751f;margin:0 0 12px;\"\u003eHEATHROW SCIENTIFIC · BLUE TIGER SCIENTIFIC\u003c\/p\u003e\n\u003ch2 style=\"font-size:30px;line-height:1.25;color:#111;margin:0 0 20px;\"\u003eBlack 1.5 mL microcentrifuge tubes: 500 per pack\u003c\/h2\u003e\n\u003cp\u003eHeathrow Scientific HS4323K black 1.5 mL polypropylene microcentrifuge tubes have attached snap caps, frosted writing areas and a stated maximum RCF of 15,000 × g. Each pack contains 500 tubes certified DNase, RNase and pyrogen free; a supplied-sterile claim is not established.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:12px;margin:24px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 180px;min-width:0;padding:16px;border-left:4px solid #78a842;background:#f3f6ef;box-sizing:border-box;font-weight:700;\"\u003eAttached, flat snap caps\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 180px;min-width:0;padding:16px;border-left:4px solid #78a842;background:#f3f6ef;box-sizing:border-box;font-weight:700;\"\u003eFrosted writing area\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 180px;min-width:0;padding:16px;border-left:4px solid #78a842;background:#f3f6ef;box-sizing:border-box;font-weight:700;\"\u003e15,000 × g maximum RCF\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 180px;min-width:0;padding:16px;border-left:4px solid #78a842;background:#f3f6ef;box-sizing:border-box;font-weight:700;\"\u003eCertified DNase, RNase and pyrogen free\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure style=\"margin:28px 0;padding:12px;background:#fafafa;box-sizing:border-box;text-align:center;\"\u003e\u003cimg alt=\"Heathrow Scientific Black 1.5 mL Microcentrifuge Tubes – 500 Pack — manufacturer product view\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Heathrow-Scientific-15-mL-MICRO-CENTRIFUGE-TUBES-BLACK-HS4323K_1725__31735.1720024265_38f093bc-c850-48bb-9f00-7bc0a1504b9c.jpg?v=1791585767\" style=\"display:block;width:100%;max-width:580px;height:auto;max-height:460px;object-fit:contain;margin:0 auto;\"\u003e\u003cfigcaption style=\"font-size:13px;color:#555;margin-top:12px;\"\u003eManufacturer close-up of the black 1.5 mL snap-cap tube; supplied as a 500-pack.\u003c\/figcaption\u003e\u003c\/figure\u003e\u003ch2 style=\"font-size:25px;margin:32px 0 18px;\"\u003eWhy choose this design?\u003c\/h2\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:18px;\"\u003e\n\u003csection style=\"flex:1 1 240px;min-width:0;border:1px solid #ddd;border-top:4px solid #7bad45;padding:20px;box-sizing:border-box;\"\u003e\u003ch3 style=\"font-size:19px;line-height:1.4;margin:0 0 10px;\"\u003eLabel without losing your place\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eA frosted writing area supports sample identification, while 0.1, 0.5, 1.0 and 1.5 mL graduations provide convenient volume references.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"flex:1 1 240px;min-width:0;border:1px solid #ddd;border-top:4px solid #7bad45;padding:20px;box-sizing:border-box;\"\u003e\u003ch3 style=\"font-size:19px;line-height:1.4;margin:0 0 10px;\"\u003eAccess with one hand\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eThe attached flat cap stays with the tube and is designed for easy one-handed use. The cap is syringe-pierceable when your procedure calls for it.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"flex:1 1 240px;min-width:0;border:1px solid #ddd;border-top:4px solid #7bad45;padding:20px;box-sizing:border-box;\"\u003e\u003ch3 style=\"font-size:19px;line-height:1.4;margin:0 0 10px;\"\u003eA defined centrifugation limit\u003c\/h3\u003e\n\u003cp style=\"margin:0;\"\u003eUse the tube within the stated maximum RCF and the requirements of the centrifuge, rotor and protocol. RCF is not the same as rpm.\u003c\/p\u003e\u003c\/section\u003e\n\u003c\/div\u003e\n\u003csection style=\"background:#f3f6ef;padding:24px 20px;margin:30px 0;box-sizing:border-box;\"\u003e\u003ch2 style=\"font-size:24px;margin:0 0 12px;\"\u003eHow to choose and check fit\u003c\/h2\u003e\n\u003cp style=\"margin:0;\"\u003eHS4323K is the black 1.5 mL tube, supplied 500 per pack. The existing URL uses “15” as a slug convention; the actual tube capacity is 1.5 mL. Autoclavable does not by itself mean supplied sterile.\u003c\/p\u003e\u003c\/section\u003e\u003ch2 style=\"font-size:24px;\"\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmall-volume sample preparation\u003c\/li\u003e\n\u003cli\u003eReagent aliquoting\u003c\/li\u003e\n\u003cli\u003eMicrocentrifugation within the rated limit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"font-size:24px;margin-top:32px;\"\u003eRelated laboratory supplies\u003c\/h2\u003e\n\u003cp\u003eThese related products are sold separately. Review their specifications and confirm compatibility with your procedure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/heathrow-scientific-80-well-microtube-rack-durable-compact-autoclavable\" style=\"color:#426f21;text-decoration:underline;\"\u003e80-Well Microtube Rack – Durable, Compact \u0026amp; Autoclavable\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/heathrow-scientific-32-place-mini-benchtop-coolers-for-microtube-storage\" style=\"color:#426f21;text-decoration:underline;\"\u003e32-Place Mini Benchtop Coolers for Microtube Storage\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\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; line-height: 1.15;\"\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;\"\u003eIs the capacity 1.5 mL or 15 mL?\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 1.5 mL microcentrifuge tube, catalog HS4323K.\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 centrifugation rating?\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 stated maximum is 15,000 × g. Confirm compatibility with your rotor and operating conditions; do not substitute that number as rpm.\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 supplied 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;\"\u003eThe source certifies them DNase, RNase and pyrogen free and identifies them as autoclavable. It does not establish a supplied-sterile claim for this listing.\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 label the tubes?\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. Each has a frosted writing area and volume graduation markings.\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 the caps separate?\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. The flat snap caps are attached to the tubes and support one-handed use.\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 validated light-blocking specification?\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;\"\u003eBlack is the specified color. No quantified light-transmission or UV-blocking performance is claimed here.\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 supplied when I order HS4323K?\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;\"\u003eOne order quantity supplies 500 tubes. The order quantity counts the listed pack or set, not each individual component.\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":50280221049130,"sku":"BTS-HS4323K","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Heathrow-Scientific-15-mL-MICRO-CENTRIFUGE-TUBES-BLACK-HS4323K_1725__31735.1720024265_38f093bc-c850-48bb-9f00-7bc0a1504b9c.jpg?v=1791585767","url":"https:\/\/bluetigerscientific.com\/products\/15-ml-microcentrifuge-tubes-black","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}