Electronics India 681 Digital Photo Fluorometer

Electronics India 681 Digital Photo Fluorometer

The Electronics India Model 681 Digital Photo Fluorometer is a precision analytical instrument specifically designed for the accurate detection and measurement of fluorophors including vitamins, quinine, steroids, fluorescein, and metal complexes. This laboratory-grade fluorometer utilizes advanced optical design with 90-degree detection geometry to minimize excitation interference and maximize sensitivity. Built to exacting standards by an ISO 9001-2000 certified manufacturer, this instrument delivers reliable performance for research laboratories, quality control facilities, and educational institutions.

Key Features & Benefits

• High Sensitivity Detection - Full scale deflection with just 1 ppm quinine sulphate in 0.1 N sulphuric acid
• 90° Detection Angle - Optimized geometry minimizes excitation interference for cleaner signals
• Comprehensive Filter Set - Includes multiple primary and secondary filters for diverse applications
• Clear Digital Readout - 3-digit 7-segment red LED display for easy reading of results
• Adjustable Sensitivity - Four sensitivity ranges for measurement flexibility
• Complete Visible Range Coverage - Suitable for various fluorescent compound analysis
• Powerful Light Source - 12V, 50W tungsten halogen lamp for reliable excitation
• Sensitive Photodetector - High-performance photodiode/photocell for accurate measurements
• Minimal Sample Requirement - Only 4ml sample volume needed for analysis
• Compact Design - Space-efficient footprint for laboratory benchtops
• ISO 9001-2000 Certified Quality - Manufactured to international quality standards
• 1-Year Warranty - Manufacturer guarantee on parts and performance

Scientific Principle

The Electronics India 681 Digital Photo Fluorometer operates on the fundamental principle of fluorescence spectroscopy:

1. Excitation - The sample containing fluorophores absorbs radiant energy at a specific wavelength determined by the primary filter
2. Electronic Transition - Molecules in the sample transition to an excited state
3. Emission - The excited molecules return to ground state, re-emitting some energy as light at a longer wavelength
4. Detection - This emitted light passes through a secondary filter and is measured by the photodetector at a 90-degree angle from the excitation source
5. Quantification - The intensity of emitted light is directly proportional to the concentration of fluorophores in the sample

This fluorometric method offers substantially higher sensitivity than traditional colorimetric approaches, allowing for detection of compounds at much lower concentrations.

Technical Specifications

Optical System

Parameter	Specification
Detection Geometry	90-degree angle measurement
Light Source	12V, 50W Tungsten Halogen lamp
Primary Filters	Corning 5840 and Corning 5113 (mounted on holders)
Secondary Filters	Corning 4308, Corning 3486, and Corning 3385 (mounted on holders)
Detector	Highly sensitive wide range Photodiode/Photocell
Spectral Range	Covers entire visible range

Performance Specifications Electronics India 681 Digital Photo Fluorometer

Parameter	Specification
Fluorometric Sensitivity	Full scale deflection obtained with 1 ppm quinine sulphate in 0.1 N sulphuric acid (primary wavelength 360 nm)
Sensitivity Range	Adjustable in 4 ranges
Minimum Sample Volume	4 ml
Sample Container	Test tubes 15 mm (D) × 80 mm (H)

Physical Specifications Electronics India 681 Digital Photo Fluorometer

Parameter	Specification
Display	3-digit 7-segment Red LED
Dimensions (L×B×H)	260 × 335 × 160 mm
Weight	4.5 Kg (approximately)
Power Requirements	230 V ± 10% AC, 50 Hz

Applications Electronics India 681 Digital Photo Fluorometer

The Electronics India 681 Digital Photo Fluorometer is suitable for a wide range of applications across multiple fields:

Biochemical Analysis

• Vitamin Determination - Quantification of fluorescent vitamins including riboflavin (B2), thiamine (B1)
• Enzyme Studies - Analysis of fluorescent enzyme substrates and products
• Protein Analysis - Detection of proteins using fluorescent tags
• Steroid Measurement - Quantification of fluorescent steroids and hormones

Pharmaceutical Applications Electronics India 681 Digital Photo Fluorometer

• Drug Analysis - Quantification of fluorescent pharmaceutical compounds
• Quality Control - Verification of active ingredient concentrations
• Formulation Testing - Analysis of pharmaceutical preparations
• Research & Development - Support for drug discovery and development

Environmental Analysis Electronics India 681 Digital Photo Fluorometer

• Water Quality Testing - Detection of fluorescent pollutants and contaminants
• Petroleum Detection - Identification of oil and petroleum products in water
• Dye Tracing - Monitoring of water flow and contamination pathways
• Metal Complex Analysis - Measurement of metal ions using fluorescent complexing agents

Educational Applications Electronics India 681 Digital Photo Fluorometer

• Teaching Laboratories - Demonstration of fluorescence principles
• Student Research - Support for undergraduate and graduate projects
• Analytical Chemistry Training - Practical instruction in fluorescence techniques
• Method Development - Exploration of new analytical procedures

Advantages of Fluorometric Analysis Electronics India 681 Digital Photo Fluorometer

The fluorometric method employed by the Model 681 offers several significant advantages over other analytical techniques:

• Superior Sensitivity - Typically 10-1000 times more sensitive than colorimetric methods
• Improved Selectivity - Dual wavelength selection (excitation and emission) provides greater specificity
• Lower Detection Limits - Capable of measuring compounds at parts-per-billion levels
• Wider Linear Range - Broader concentration range for quantitative analysis
• Minimal Sample Volume - Requires only 4ml of sample for analysis
• Non-Destructive Technique - Sample can often be recovered after measurement
• Rapid Analysis - Quick procedure with minimal sample preparation

Included Accessories Electronics India 681 Digital Photo Fluorometer

The Electronics India 681 Digital Photo Fluorometer comes complete with everything needed for immediate operation:

• Test Tubes - Set of 5 sample tubes (15mm D × 80mm H)
• Primary Filters - Corning 5840 and Corning 5113 mounted on holders
• Secondary Filters - Corning 4308, Corning 3486, and Corning 3385 mounted on holders
• Dust Cover - Protective cover to maintain instrument cleanliness
• Instruction Manual - Comprehensive documentation for setup and operation

Design Features Electronics India 681 Digital Photo Fluorometer

Optical System

• 90° Detection Geometry - Minimizes interference from the excitation source
• High-Quality Filters - Corning glass filters for precise wavelength selection
• Powerful Illumination - 50W tungsten halogen source provides stable excitation
• Sensitive Detector - Wide-range photodiode/photocell for accurate measurement

Electronic System Electronics India 681 Digital Photo Fluorometer

• Digital Readout - Clear 3-digit LED display for direct concentration readings
• Adjustable Sensitivity - Four-range adjustment for measurement flexibility
• Stable Circuitry - Reliable electronics for consistent performance
• Simple Controls - User-friendly interface for straightforward operation

Physical Design Electronics India 681 Digital Photo Fluorometer

• Compact Footprint - Space-efficient dimensions (260 × 335 × 160 mm)
• Durable Construction - Robust build quality for laboratory environments
• Lightweight - Approximately 4.5 kg for easy positioning and transport
• Integrated Sample Holder - Properly positions test tubes for optimal measurement

Quality Assurance

As an ISO 9001-2000 certified manufacturer, Electronics India maintains rigorous quality control standards throughout the production process: Electronics India 681 Digital Photo Fluorometer

• Component Testing - Verification of all optical and electronic components
• Performance Validation - Each unit tested against reference standards
• Calibration Verification - Confirmation of measurement accuracy
• Quality Documentation - Comprehensive records of testing and inspection
• 1-Year Warranty - Coverage for parts and workmanship

Related Products from Electronics India Electronics India 681 Digital Photo Fluorometer

Electronics India offers a comprehensive range of analytical and laboratory instruments, including:

• Semi-Auto Analyzers
• Single Beam and Double Beam UV/VIS Spectrophotometers
• Flame Photometers
• Haemoglobin Meters
• Digital pH Meters
• Digital Conductivity Meters
• Digital Photo Colorimeters
• Turbidity Meters
• Auto KF Titrimeters
• Digital DO, TDS, and Salinity Meters
• Temperature Indicators and Telethermometers
• Water & Soil Analysis Kits
• Digital Colony Counters
• Portable Meters (pH, Conductivity, TDS, DO)
• Pharmaceutical Testing Equipment
• Laboratory Microscopes Electronics India 681 Digital Photo Fluorometer

Summary Electronics India 681 Digital Photo Fluorometer

The Electronics India Model 681 Digital Photo Fluorometer combines precision optical design with reliable electronic performance to deliver sensitive and accurate fluorometric analysis. With its comprehensive filter set, adjustable sensitivity ranges, and minimal sample requirements, this instrument provides an efficient solution for the quantitative determination of fluorescent compounds across biochemical, pharmaceutical, environmental, and educational applications. Manufactured to ISO 9001-2000 standards and backed by a 1-year warranty, the Model 681 offers reliable performance and excellent value for laboratories requiring fluorescence measurement capabilities.