Digital Potentiometer 118 4-Electrode Titration Analyzer
Digital Potentiometer Model 118: Professional-Grade Potentiometric Analysis System
The Digital Potentiometer Model 118 is a precision instrument designed for accurate potentiometric measurements in laboratory environments. Manufactured by Electronics India, an ISO 9001-2000 certified company, this reliable analyzer displays results directly in millivolts on a clear 3½ digit LED display. Engineered for potentiometric, ORP (Oxidation-Reduction Potential), and acid-base titrations, this versatile instrument includes a complete set of four specialized electrodes to support a wide range of analytical applications.
Key Features & Benefits Digital Potentiometer 118 4-Electrode Titration Analyzer
- High-Precision Measurement - Dual-range capability for both fine (0 to ±199.9 mV) and wide-range (0 to ±1999 mV) analysis
- Complete Electrode Package - Includes reference, platinum, silver, and glass electrodes for various titration applications
- Crystal Clear Display - 3½ digit 0.5" seven-segment LED display with automatic polarity indication
- Superior Resolution - 0.1 mV in low range and 1 mV in high range for detailed analysis
- Exceptional Stability - Highly stable circuitry ensures reliable and consistent readings
- Ultra-High Input Impedance - >10¹² ohms provides accurate measurements without loading the sample
- Excellent Accuracy - ±1 mV ±1 digit ensures dependable results
- Compact Design - Space-efficient footprint for laboratory bench use
- Rugged Construction - Durable housing for long-term performance
- Economic Value - Comprehensive capabilities at a cost-effective price point
- Complete Package - Includes electrode stand, clamp, and dust cover
- Premium Protection - Shipped in shock-proof Styrofoam packing inside a durable plywood storage box
Technical Specifications Digital Potentiometer 118 4-Electrode Titration Analyzer
| Feature |
Specification |
| Model |
118 |
| Measurement Range |
0 to ±199.9 mV
0 to ±1999 mV |
| Resolution |
0.1 mV (low range)
1 mV (high range) |
| Repeatability |
±1 mV |
| Accuracy |
±1 mV ±1 digit |
| Input Impedance |
> 10¹² ohms |
| Operating Temperature |
10°C to 45°C |
| Display |
3½ Digit 0.5" seven segment LED display with auto polarity indication |
| Dimensions |
275 x 175 x 75 mm (L x B x H) (Approx) |
| Weight |
2.5 Kgs. (Approx.) |
| Power Requirements |
230 V ± 10% AC, 50Hz |
Standard Accessories Digital Potentiometer 118 4-Electrode Titration Analyzer
- Platinum Electrode - 1 No.
- Glass Electrode - 1 No.
- Reference Electrode - 1 No.
- Silver Electrode - 1 No.
- Electrode Stand & Clamp - 1 No.
- Dust Cover - 1 No.
Applications & Industries
Laboratory Applications Digital Potentiometer 118 4-Electrode Titration Analyzer
- Potentiometric Titrations - Precise endpoint detection for various chemical reactions
- Oxidation-Reduction Potential (ORP) Measurement - Monitoring redox reactions and equilibria
- Acid-Base Titrations - Accurate determination of concentration and pH equivalence points
- Precipitation Titrations - Analysis using silver electrode for halide determinations
- Complexometric Titrations - Metal ion concentration determination
- Research Projects - Versatile tool for various electrochemical studies
Industry Sectors
- Educational Institutions - College and university chemistry laboratories
- Pharmaceutical Industry - Quality control and research applications
- Chemical Manufacturing - Process control and product testing
- Water Treatment - Analysis of water quality parameters
- Food & Beverage - Quality assurance testing
- Research & Development - Specialized electrochemical research
Electrode Functions & Applications Digital Potentiometer 118 4-Electrode Titration Analyzer
Platinum Electrode
The included platinum electrode is designed for specific analytical applications:
- Redox Potential Measurement - Monitors oxidation-reduction reactions
- Karl Fischer Titrations - Endpoint detection in moisture determination
- Chlorine Analysis - Determination of free and total chlorine
- Metal Ion Detection - Measurement of certain metal ion concentrations
- Catalytic Reactions - Monitoring of catalyzed reaction progress
Glass Electrode Digital Potentiometer 118 4-Electrode Titration Analyzer
The specialized glass electrode enables specific measurement capabilities:
- pH-Based Titrations - Endpoint detection in acid-base reactions
- Hydrolysis Reactions - Monitoring of hydrolytic processes
- Acidity Determination - Quantification of acidic components
- Buffer Capacity Analysis - Evaluation of solution buffering properties
- Ion Exchange Studies - Monitoring pH changes during ion exchange
Reference Electrode Digital Potentiometer 118 4-Electrode Titration Analyzer
The reference electrode provides the stable potential baseline essential for accurate measurements:
- Baseline Potential - Stable reference point for all potentiometric measurements
- Compatibility - Works with all indicator electrodes in the set
- Long-Term Stability - Designed for consistent potential over extended periods
- Low Junction Potential - Minimizes measurement errors
- Multiple Analysis Types - Essential component for all potentiometric titrations
Silver Electrode Digital Potentiometer 118 4-Electrode Titration Analyzer
The silver electrode enables specialized analytical applications:
- Precipitation Titrations - Particularly for halide determinations
- Chloride Analysis - Accurate measurement of chloride content
- Argentometric Titrations - Silver-based analytical methods
- Silver Ion Detection - Direct measurement of silver ion concentration
- Halide Content Determination - Analysis of bromide, iodide, and chloride levels
Potentiometric Titration Principles Digital Potentiometer 118 4-Electrode Titration Analyzer
Fundamental Concepts
Potentiometric titration utilizes electrode potential measurements to determine chemical concentrations:
- Potential Difference - Measures voltage between indicator and reference electrodes
- Endpoint Detection - Identifies reaction completion through potential change
- Direct Reading - Results displayed in millivolts for quantitative analysis
- High Sensitivity - Capable of detecting subtle concentration changes
- Nernst Equation - Theoretical basis for relating potential to concentration
Advantages Over Traditional Titration Methods Digital Potentiometer 118 4-Electrode Titration Analyzer
- Objective Endpoint Detection - Digital reading eliminates subjective color judgment
- Higher Precision - Detects endpoints more accurately than visual indicators
- Applicable to Colored Solutions - Works with samples where visual indicators are unsuitable
- Turbid Sample Analysis - Effective with cloudy or opaque solutions
- Greater Sensitivity - Detects smaller concentration changes
- Multiple Endpoint Detection - Can identify multiple endpoints in complex mixtures
Operation & Best Practices
General Operation Digital Potentiometer 118 4-Electrode Titration Analyzer
- Connect the appropriate electrodes for your specific titration
- Power on the instrument and allow brief warm-up period
- Select the appropriate measurement range based on expected potential values
- Immerse electrodes in the solution being tested
- Monitor the displayed potential values during titration
- Record potential changes to determine titration endpoint
- Rinse electrodes thoroughly between measurements
Electrode Care & Maintenance Digital Potentiometer 118 4-Electrode Titration Analyzer
- Regular Cleaning - Rinse electrodes with distilled water after each use
- Proper Storage - Store electrodes according to their specific requirements
- Glass Electrode Hydration - Keep glass electrode bulb hydrated when not in use
- Reference Electrode Solution - Maintain proper electrolyte level in reference electrode
- Platinum Electrode Cleaning - Periodically clean with appropriate solutions to remove deposits
- Silver Electrode Maintenance - Polish when necessary to maintain surface quality
- Connector Inspection - Regularly check electrical connections for corrosion or damage
Measurement Accuracy Tips Digital Potentiometer 118 4-Electrode Titration Analyzer
- Temperature Stability - Maintain consistent sample temperature during measurement
- Proper Stirring - Use consistent, gentle stirring during titrations
- Calibration Verification - Periodically check using standard solutions
- Electrode Positioning - Ensure consistent electrode depth and separation
- Sample Volume Consistency - Use similar sample volumes for comparable results
- Titrant Addition Rate - Add titrant at an appropriate, consistent rate
- Environmental Factors - Shield from electromagnetic interference and vibration
Technical Advantages Digital Potentiometer 118 4-Electrode Titration Analyzer
Electronic Design Features
- High-Stability Circuitry - Provides consistent, drift-free measurements
- Dual Range Capability - Offers both high resolution and wide measurement range
- Auto-Polarity Indication - Automatically displays positive or negative potentials
- Ultra-High Input Impedance - Ensures accurate measurement without sample loading
- Digital Processing - Converts analog signals to precise digital readings
- Noise Filtering - Electronic design minimizes interference for stable readings
- LED Display Technology - Bright, clear display visible in various lighting conditions
Practical Laboratory Benefits Digital Potentiometer 118 4-Electrode Titration Analyzer
- Multi-Purpose Functionality - Single instrument for various titration methods
- Space Efficiency - Compact design for laboratory bench space optimization
- Quick Setup - Ready for use with minimal preparation time
- Easy Electrode Exchange - Simple connection system for different electrodes
- Dual Range Selection - Flexibility for different analysis requirements
- Shock-Resistant Packaging - Special protection ensures safe transport and storage
- Comprehensive Accessory Set - Complete package with all necessary components
Common Titration Applications
Acid-Base Titrations Digital Potentiometer 118 4-Electrode Titration Analyzer
| Application |
Titrant |
Electrodes Used |
| Strong Acid Determination |
Standardized NaOH |
Glass + Reference |
| Weak Acid Analysis |
Standardized NaOH |
Glass + Reference |
| Strong Base Determination |
Standardized HCl |
Glass + Reference |
| Weak Base Analysis |
Standardized HCl |
Glass + Reference |
| Multiple Acidity Determination |
Standardized NaOH |
Glass + Reference |
Redox Titrations Digital Potentiometer 118 4-Electrode Titration Analyzer
| Application |
Titrant |
Electrodes Used |
| Iron Content Analysis |
Potassium Dichromate |
Platinum + Reference |
| Vitamin C Determination |
Iodine |
Platinum + Reference |
| Oxidizing Agent Analysis |
Standardized Reductant |
Platinum + Reference |
| Reducing Agent Analysis |
Standardized Oxidant |
Platinum + Reference |
| Permanganate Titrations |
Potassium Permanganate |
Platinum + Reference |
Precipitation Titrations Digital Potentiometer 118 4-Electrode Titration Analyzer
| Application |
Titrant |
Electrodes Used |
| Chloride Determination |
Silver Nitrate |
Silver + Reference |
| Bromide Analysis |
Silver Nitrate |
Silver + Reference |
| Iodide Determination |
Silver Nitrate |
Silver + Reference |
| Mixed Halide Analysis |
Silver Nitrate |
Silver + Reference |
| Silver Ion Determination |
Sodium Chloride |
Silver + Reference |
About Electronics India Digital Potentiometer 118 4-Electrode Titration Analyzer
Electronics India is an ISO 9001-2000 certified company specializing in the design and manufacture of precision analytical and laboratory instruments. With a comprehensive product range that includes spectrophotometers, flame photometers, pH meters, conductivity meters, and specialized testing equipment, Electronics India serves educational institutions, research laboratories, pharmaceutical companies, and various industries requiring accurate analytical capabilities.
The Digital Potentiometer Model 118 is backed by Electronics India's commitment to quality, supported by a one-year warranty. All products undergo rigorous testing to ensure reliable performance and accuracy, with premium packaging designed to protect instruments during transportation and storage.
Additional Products from Electronics India
Electronics India offers a comprehensive range of laboratory and analytical instruments, including:
- Semi Auto Analyzers
- Single and Double Beam UV/VIS Spectrophotometers
- Flame Photometers
- Haemoglobin Meters
- Digital pH Meters
- Digital Photo Fluorometers
- Digital Conductivity and TDS Meters
- Digital Photo Colorimeters
- Turbidity Meters
- Auto KF Titrimeters
- Digital DO Meters
- Temperature Measurement Instruments
- Water & Soil Analysis Kits
- Digital Salinity Meters
- Digital Colony Counters
- Portable Test Meters
- Pharmaceutical Testing Equipment
- Laboratory Microscopes
Summary Digital Potentiometer 118 4-Electrode Titration Analyzer
The Digital Potentiometer Model 118 represents a professional-grade solution for potentiometric analysis in laboratory environments. With its dual-range measurement capability, comprehensive electrode package, high-stability circuitry, and clear LED display, this instrument delivers the precision and versatility required for accurate titration endpoint detection and potential measurement.
Ideal for educational institutions, pharmaceutical laboratories, and industrial quality control applications, the Model 118 combines reliability, accuracy, and ease of use in a compact, economical package. The complete accessory set—including four specialized electrodes, stand, and protective components—ensures immediate operational capability for various analytical methods.
