{"product_id":"ei-dvi-model-681-digital-photo-fluorometer-high-sensitivity-fluorophors-analysis","title":"Electronics India 681 Digital Photo Fluorometer | High Sensitivity Fluorophors Analysis","description":"\u003cstyle\u003e\n:root {\n    --primary-blue:#004a99;\n    --hover-blue:#0056b3;\n    --bg-gray:#f8f9fa;\n    --text-color:#333;\n    --border-color:#ddd;\n    --white:#fff;\n}\n\n.scispectrum-tabs-container{\n    font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;\n    max-width:1200px;\n    margin:auto;\n    background:#fff;\n    border-radius:8px;\n    box-shadow:0 4px 12px rgba(0,0,0,0.05);\n    overflow:hidden;\n}\n\n.tab-input{display:none;}\n\n.tab-nav{\n    display:flex;\n    flex-wrap:wrap;\n    border-bottom:2px solid var(--border-color);\n}\n\n.tab-label{\n    flex:1;\n    padding:14px;\n    text-align:center;\n    font-weight:600;\n    cursor:pointer;\n    color:var(--primary-blue);\n}\n\n.tab-label:hover{background:rgba(0,74,153,0.05);}\n\n#tab1:checked ~ .tab-nav label[for=\"tab1\"],\n#tab2:checked ~ .tab-nav label[for=\"tab2\"],\n#tab3:checked ~ .tab-nav label[for=\"tab3\"],\n#tab4:checked ~ .tab-nav label[for=\"tab4\"]{\n    border-bottom:3px solid var(--primary-blue);\n}\n\n.tab-panels{padding:20px;}\n.tab-content{display:none;}\n\n#tab1:checked ~ .tab-panels #content1,\n#tab2:checked ~ .tab-panels #content2,\n#tab3:checked ~ .tab-panels #content3,\n#tab4:checked ~ .tab-panels #content4{\n    display:block;\n}\n\nh3{color:var(--primary-blue);}\n\n.spec-table{\n    width:100%;\n    border-collapse:collapse;\n}\n.spec-table th,.spec-table td{\n    padding:10px;\n    border-bottom:1px solid var(--border-color);\n}\n.spec-table th{\n    background:var(--primary-blue);\n    color:#fff;\n}\n\n.features-list{\n    list-style:none;\n    padding:0;\n    display:grid;\n    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));\n    gap:15px;\n}\n.features-list li{\n    border:1px solid var(--border-color);\n    padding:15px;\n    border-radius:6px;\n    position:relative;\n    padding-left:40px;\n}\n.features-list li::before{\n    content:\"✔\";\n    position:absolute;\n    left:12px;\n    color:var(--primary-blue);\n    font-weight:bold;\n}\n\n.faq-item{margin-bottom:15px;     padding-bottom: 15px;\n    border-bottom: 1px solid #ddd; \/* Matches theme *\/}\n.faq-question{font-weight:600;color:var(--primary-blue);}\n\n@media(max-width:768px){\n.tab-label{font-size:0.85rem;}\n}\n\u003c\/style\u003e\n\u003cdiv class=\"scispectrum-tabs-container\"\u003e\n\u003cinput id=\"tab1\" class=\"tab-input\" checked name=\"tabs\" type=\"radio\"\u003e \u003cinput id=\"tab2\" class=\"tab-input\" name=\"tabs\" type=\"radio\"\u003e \u003cinput id=\"tab3\" class=\"tab-input\" name=\"tabs\" type=\"radio\"\u003e \u003cinput id=\"tab4\" class=\"tab-input\" name=\"tabs\" type=\"radio\"\u003e\u003cnav class=\"tab-nav\"\u003e\u003clabel class=\"tab-label\" for=\"tab1\"\u003eOverview\u003c\/label\u003e \u003clabel class=\"tab-label\" for=\"tab2\"\u003eSpecifications\u003c\/label\u003e \u003clabel class=\"tab-label\" for=\"tab3\"\u003eFeatures \u0026amp; Benefits\u003c\/label\u003e \u003clabel class=\"tab-label\" for=\"tab4\"\u003eFAQs\u003c\/label\u003e\u003c\/nav\u003e\n\u003cdiv class=\"tab-panels\"\u003e\n\u003c!-- Overview --\u003e\n\u003cdiv id=\"content1\" class=\"tab-content\"\u003e\n\u003ch3\u003eModel 681 Digital Photo Fluorometer\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eModel 681 Digital Photo Fluorometer\u003c\/strong\u003e is a high-sensitivity analytical instrument designed for precise detection and quantification of fluorescent compounds including vitamins, quinine, steroids, fluorescein, and metal complexes. Built for laboratory, pharmaceutical, and research applications, it delivers superior performance based on advanced fluorescence spectroscopy principles.\u003c\/p\u003e\n\u003cp\u003eUtilizing a \u003cstrong\u003e90-degree detection geometry\u003c\/strong\u003e, the instrument minimizes excitation light interference and maximizes signal clarity. This results in highly accurate and reproducible fluorescence measurements, making it ideal for trace-level analysis.\u003c\/p\u003e\n\u003cp\u003eWith adjustable sensitivity ranges, dual filter system, and wide spectral coverage, the Model 681 offers exceptional flexibility and analytical precision across diverse applications including clinical diagnostics, environmental monitoring, and quality control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e✔ Ideal for:\u003c\/strong\u003e Laboratories, Pharma QC, Environmental Testing, Academic Research\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Specifications --\u003e\n\u003cdiv id=\"content2\" class=\"tab-content\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e681 Digital Photo Fluorometer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e3-digit bright red LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExcitation Source\u003c\/td\u003e\n\u003ctd\u003e12V, 50W Tungsten Halogen Lamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Geometry\u003c\/td\u003e\n\u003ctd\u003e90° Measurement Angle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetector\u003c\/td\u003e\n\u003ctd\u003ePhotodiode \/ Photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpectral Range\u003c\/td\u003e\n\u003ctd\u003eEntire Visible Spectrum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Filters\u003c\/td\u003e\n\u003ctd\u003eCorning 5840, 5113\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Filters\u003c\/td\u003e\n\u003ctd\u003eCorning 4308, 3486, 3385\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity\u003c\/td\u003e\n\u003ctd\u003e1 ppm Quinine Sulphate Detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity Range\u003c\/td\u003e\n\u003ctd\u003e4 Adjustable Ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Volume\u003c\/td\u003e\n\u003ctd\u003eMinimum 4 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Holder\u003c\/td\u003e\n\u003ctd\u003e15 mm Test Tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e260 × 335 × 160 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e4.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e230V AC, 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c!-- Features --\u003e\n\u003cdiv id=\"content3\" class=\"tab-content\"\u003e\n\u003ch3\u003eCore Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul class=\"features-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity Detection:\u003c\/strong\u003e Detects fluorophores at ppm levels, ensuring precise trace analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90° Optical Geometry:\u003c\/strong\u003e Reduces background interference and improves signal accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Spectral Coverage:\u003c\/strong\u003e Suitable for diverse fluorescent compounds across visible range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Filter System:\u003c\/strong\u003e Enhances selectivity and measurement specificity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Four ranges for flexible analytical applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimal Sample Requirement:\u003c\/strong\u003e Requires only 4 ml sample, reducing reagent consumption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Durable Design:\u003c\/strong\u003e Ideal for laboratories with limited bench space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- FAQs --\u003e\n\u003cdiv id=\"content4\" class=\"tab-content\"\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-question\"\u003eWhat is a digital photo fluorometer used for?\u003c\/p\u003e\n\u003cp\u003eA digital photo fluorometer is used for detecting and measuring fluorescent compounds such as vitamins, quinine, and metal complexes. It provides highly sensitive quantitative analysis by measuring emitted light intensity, making it ideal for laboratory research, pharmaceutical testing, and environmental monitoring applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-question\"\u003eHow does the 90-degree detection geometry improve accuracy?\u003c\/p\u003e\n\u003cp\u003eThe 90-degree detection geometry minimizes interference from excitation light by measuring fluorescence at a right angle. This significantly improves signal clarity and sensitivity, resulting in more accurate and reproducible measurements compared to traditional optical configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-question\"\u003eWhat compounds can be analyzed using the Model 681 fluorometer?\u003c\/p\u003e\n\u003cp\u003eThe Model 681 can analyze a wide range of fluorophores including vitamins (B1, B2), quinine, steroids, fluorescein, and metal complexes. Its wide spectral coverage makes it suitable for clinical, pharmaceutical, and environmental testing applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-question\"\u003eWhat is the sensitivity of the Model 681 fluorometer?\u003c\/p\u003e\n\u003cp\u003eThe instrument achieves high sensitivity, capable of detecting as low as 1 ppm quinine sulphate. This allows accurate trace-level analysis, making it significantly more sensitive than conventional colorimetric methods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-question\"\u003eWhat are the advantages of fluorescence spectroscopy over colorimetry?\u003c\/p\u003e\n\u003cp\u003eFluorescence spectroscopy offers 10 to 1000 times higher sensitivity compared to colorimetry. It allows detection of very low concentrations, improved specificity using filters, and reduced interference, making it ideal for advanced analytical applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Electronics India","offers":[{"title":"Default Title","offer_id":51461014585590,"sku":"EI-DVI-FLU-681","price":92630.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/6535\/1158\/files\/Untitled_design_5__30129.1759754131.386.513.jpg?v=1786599166","url":"https:\/\/scispectrum.in\/products\/ei-dvi-model-681-digital-photo-fluorometer-high-sensitivity-fluorophors-analysis","provider":"SciSpectrum Lab Essentials","version":"1.0","type":"link"}