{"product_id":"mtc-bio-spectratube-rainbow-cap-centrifuge-tubes","title":"MTC Bio SpectraTube™ Rainbow-Cap Centrifuge Tubes – 15 \u0026 50 mL","description":"\u003cdiv style=\"max-width:1400px;margin:0 auto;font-family:'Open Sans',sans-serif;font-weight:300;color:#333;background:#fff;padding:16px;\"\u003e\n\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;display:flex;flex-wrap:wrap;gap:28px 40px;align-items:center;\"\u003e\u003cdiv style=\"flex:1 1 450px;min-width:min(300px,100%);text-align:center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/color-centrifuge-tubes.png?v=1790779028\" alt=\"MTC Bio SpectraTube™ Rainbow-Cap Centrifuge Tubes – 15 \u0026amp; 50 mL\" style=\"width:100%;max-width:440px;height:auto;object-fit:contain;border-radius:8px;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 450px;min-width:min(300px,100%);\"\u003e\n\u003ch3\u003eOrganize samples by cap color, then choose the pack that fits your bench.\u003c\/h3\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eSpectraTube combines polypropylene conical tubes with rainbow screw caps for visual sample organization. Select 15 or 50 mL capacity and foam-racked or bulk-bag packaging; each configuration supplies 500 sterile tubes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;display:flex;flex-wrap:wrap;gap:28px 40px;\"\u003e\u003cdiv style=\"flex:1 1 180px;text-align:center;border:1px solid #e0e0e0;border-radius:8px;padding:20px 12px;background:#f9f9f9;\"\u003e\n\u003cp style=\"font-size:1.6rem;font-weight:600;color:#1f6fb2;\"\u003e5 colors\u003c\/p\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eBlue, green, red, yellow, orange\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 180px;text-align:center;border:1px solid #e0e0e0;border-radius:8px;padding:20px 12px;background:#f9f9f9;\"\u003e\n\u003cp style=\"font-size:1.6rem;font-weight:600;color:#1f6fb2;\"\u003e15 \u0026amp; 50 mL\u003c\/p\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eConical PP tubes\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 180px;text-align:center;border:1px solid #e0e0e0;border-radius:8px;padding:20px 12px;background:#f9f9f9;\"\u003e\n\u003cp style=\"font-size:1.6rem;font-weight:600;color:#1f6fb2;\"\u003e500\u003c\/p\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eTubes per case\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 180px;text-align:center;border:1px solid #e0e0e0;border-radius:8px;padding:20px 12px;background:#f9f9f9;\"\u003e\n\u003cp style=\"font-size:1.6rem;font-weight:600;color:#1f6fb2;\"\u003e−86 °C\u003c\/p\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eLow-temperature storage rating\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;\"\u003e\u003ch3\u003eWhy Labs Choose This MTC Bio Format\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:28px 40px;\"\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eColor-coded workflow\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eUse cap colors to distinguish sample groups alongside written labels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eRacked or bagged\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eChoose mixed-color foam racks or individual-color bags.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eDefined centrifugal limits\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003e15 mL: 12,000 × g; 50 mL: 15,000 × g.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eCertified cleanliness\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eManufacturer lists sterile, RNase-, DNase-, pyrogen- and cytotoxin-free tubes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;\"\u003e\u003ch3\u003eWhich Configuration Do I Need?\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:28px 40px;\"\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eC2715 \/ C2716 | 15 mL\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eC2715: 10 foam racks of 50. C2716: bags of 25, 500 total.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eC2750 \/ C2751 | 50 mL\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eC2750: 20 foam racks of 25. C2751: bags of 25, 500 total.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px;min-width:min(260px,100%);border-left:3px solid #1f6fb2;padding:4px 0 4px 16px;\"\u003e\n\u003cstrong\u003eColor as a secondary identifier\u003c\/strong\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eRetain written sample IDs; a cap color alone is not a unique sample identifier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;display:flex;flex-wrap:wrap;gap:28px 40px;align-items:center;\"\u003e\u003cdiv style=\"flex:1 1 450px;min-width:min(300px,100%);\"\u003e\n\u003ch3\u003eChoose the Organization That Suits Your Method\u003c\/h3\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eFoam racks present multiple colors together, while bulk bags separate the cap colors. The manufacturer specifies uniform polypropylene walls and screw caps described as leak-proof. Tubes and caps can be used for storage down to −86 °C.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 450px;min-width:min(300px,100%);text-align:center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/Spectratube-Bulk-Bags-scaled.jpg?v=1790779028\" alt=\"MTC Bio SpectraTube™ Rainbow-Cap Centrifuge Tubes – 15 \u0026amp; 50 mL — manufacturer product image\" style=\"width:100%;max-width:440px;height:auto;object-fit:contain;border-radius:8px;\"\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;\"\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eColor-coded sample preparation\u003c\/li\u003e\n\u003cli\u003eCell and molecular biology workflows\u003c\/li\u003e\n\u003cli\u003eCentrifugation and low-temperature storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eConfirm material compatibility and your method’s requirements before use. No additional performance or regulatory certification is implied.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"background:#f3f8fc;border-left:4px solid #1f6fb2;padding:24px;margin-bottom:40px;\"\u003e\u003ch3\u003ePractical Bench Tip\u003c\/h3\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eApply the RCF limit for your selected volume. Manufacturer ratings refer to liquids with specific gravity 1.0 using appropriate rotors, cushions and adaptors.\u003c\/p\u003e\u003c\/section\u003e\u003csection style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;\"\u003e\u003ch3\u003eRelated Laboratory Products\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRelated workflow:\u003c\/strong\u003e \u003ca href=\"\/products\/mtc-bio-centrifuge-tubes-10-15-25-30-50ml\"\u003eMTC Bio centrifuge tubes\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlternative format:\u003c\/strong\u003e \u003ca href=\"\/products\/mtc-bio-proseries-performance-centrifuge-tubes\"\u003eProSeries performance centrifuge tubes\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eRelated workflow and alternative-format links do not establish fit or interchangeability. Pipettors and other products are sold separately; use only the explicitly documented model matches above.\u003c\/p\u003e\u003c\/section\u003e\u003cdiv class=\"faq_block\" itemscope itemtype=\"https:\/\/schema.org\/FAQPage\" style=\"border-bottom:1px solid #e0e0e0;padding:0 0 40px;margin:0 0 40px;\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eAre SpectraTubes an alternative to Falcon conical centrifuge tubes?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eBoth offer sterile polypropylene conical tubes in 15 and 50 mL formats. Falcon 352097 and SpectraTube 15 mL share a 12,000 × g rating and 500-tube case format. Falcon 352098 is rated to 16,000 × g, while SpectraTube 50 mL is rated to 15,000 × g. Dimensions and caps differ; validate rotor fit and use the selected product’s own rating. Trademarks belong to their respective owners; comparison does not imply endorsement, affiliation or common manufacturing origin.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eAre individual cap colors selectable?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eNo. These configurations supply the five-color assortment. Select capacity and packaging, not an individual color.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eHow do rack and bag packs differ?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eRacked 15 mL tubes are 50\/rack; racked 50 mL are 25\/rack. Bulk bags contain 25 tubes of one color; the case total is 500.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eWhat are the centrifugation limits?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003e15 mL: 12,000 × g. 50 mL: 15,000 × g, for specific gravity 1.0 with suitable rotor support.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eCan tubes and caps be frozen?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eThe manufacturer rates both for sample storage down to −86 °C. Validate fill volume and your freezing method.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eAre they sterile and nuclease-free?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eMTC Bio lists sterile, RNase-, DNase-, pyrogen- and cytotoxin-free tubes.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eWhat are the tube dimensions?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003e15 mL tubes are 17 × 121 mm; 50 mL tubes are 29 × 117 mm.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"padding:16px 0;border-bottom:1px solid #e0e0e0;\"\u003e\u003csummary itemprop=\"name\" style=\"font-weight:600;cursor:pointer;\"\u003eDoes rainbow color identify the sample permanently?\u003c\/summary\u003e\u003cdiv itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\"\u003e\u003cdiv itemprop=\"text\"\u003e\u003cp style=\"font-size:1rem;line-height:1.6;\"\u003eNo. Use cap color as an additional visual cue and maintain durable written or barcode sample identification.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"MTC Bio","offers":[{"title":"C2715 | SpectraTubes™ Rainbow Capped Centrifuge Tubes, 15mL","offer_id":52797670162730,"sku":"BTS-C2715","price":239.01,"currency_code":"USD","in_stock":true},{"title":"C2716 | SpectraTubes™ Rainbow Capped Centrifuge Tubes, 15mL","offer_id":52797670195498,"sku":"BTS-C2716","price":217.8,"currency_code":"USD","in_stock":true},{"title":"C2750 | SpectraTubes™ Rainbow Capped Centrifuge Tubes, 50mL","offer_id":52797670228266,"sku":"BTS-C2750","price":253.14,"currency_code":"USD","in_stock":true},{"title":"C2751 | SpectraTubes™ Rainbow Capped Centrifuge Tubes, 50mL","offer_id":52797670261034,"sku":"BTS-C2751","price":230.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0896\/1579\/4474\/files\/color-centrifuge-tubes.png?v=1790779028","url":"https:\/\/bluetigerscientific.com\/products\/mtc-bio-spectratube-rainbow-cap-centrifuge-tubes","provider":"Blue Tiger Scientific","version":"1.0","type":"link"}