PRE740-A Nitrate Ion Selective Electrode
PRE740-A Nitrate Ion Selective Electrode
PRE740-A Nitrate Ion Selective Electrode for accurate NO₃⁻ measurement (0.5–62,000 mg/L). Ideal for water, soil, agriculture, and industrial monitoring.
PRE740 – High-Performance Nitrate Ion Selective Electrode for Accurate NO₃⁻ Measurement
Introduction
The PRE740-A is a high-precision Nitrate Ion Selective Electrode engineered for fast, accurate, and repeatable nitrate ion (NO₃⁻) measurements across a wide range of liquid matrices. With a broad measuring range from 0.5 mg/L to 62,000 mg/L, the PRE740-A offers unmatched sensitivity and flexibility, making it an essential tool for professionals in environmental monitoring, water treatment, agriculture, food safety, and industrial research.
Manufactured using durable materials like PMMA + PVC, and built to deliver consistent performance in both laboratory and field conditions, the PRE740-A stands out as a trusted solution for nitrate analysis.
1. Key Features of the PRE740-A Nitrate Ion Selective Electrode
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Wide Measuring Range: Detects nitrate concentrations from 0.5 mg/L to 62,000 mg/L, allowing for precise analysis in both trace and high-concentration environments.
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Fast Response Time: Provides 95% measurement accuracy in ≤30 seconds, ensuring timely and efficient results.
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High Repeatability: Achieves consistent results with ±2% repeatability, essential for quality control and scientific reliability.
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Broad pH Compatibility: Functions effectively across a pH range of 2.5 to 11, accommodating various sample types.
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Interference Resistance: Minimizes cross-sensitivity to Cl⁻, NO₂⁻, ClO₄⁻, I⁻, CN⁻, BF₄⁻, and organic acid ions, enhancing data accuracy.
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Rugged Build: The robust housing made from PMMA + PVC resists corrosion, making it ideal for long-term use in challenging environments.
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Online Monitoring Capability: Fully supports integration into real-time online systems, ideal for automated nitrate tracking.
2. Applications of the PRE740-A
The PRE740-A is designed for professional and industrial nitrate monitoring applications, including:
Environmental Monitoring
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Analyze surface water, groundwater, rainwater, and seawater for nitrate contamination.
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Support government agencies and research institutions in pollution tracking and ecological studies.
Agriculture & Food Safety
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Optimize fertilization by monitoring nitrate levels in soil and irrigation water.
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Ensure food safety by testing nitrate residues in vegetables, pickled foods, and produce.
Water Treatment & Industry
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Monitor drinking water systems, boiler circulating water, wastewater, and leachate from solid waste.
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Ensure compliance with environmental standards in industrial discharge.
Mining & Geology
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Evaluate nitrate ion presence in coal and ore samples, supporting environmental assessments and resource management.
3. Benefits of Using the PRE740-A
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Simple Integration: Compatible with standard ion meters, pH meters, and online analyzers, reducing setup complexity.
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Low Maintenance: Easily cleaned using deionized water and diluted nitrate solution—no specialized tools required.
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Flexible Storage: Supports both dry storage (long-term) and wet storage in nitrate solution (short-term).
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Accurate Under Varying Temperatures: Offers support for temperature compensation via 10k, 22k, 2.252k, PT1000, or PT100 sensors.
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Stable Signal Output: Uses a double salt bridge with ceramic junction for stable, drift-resistant performance, even in long-term use.
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Industrial-Grade Durability: Built to withstand chemical exposure, pressure variation (up to 2 atm), and frequent use.
4. Technical Specifications
| Parameter | Specification |
| Slope | 55 ± 3 mV |
| Repeatability | ± 2% |
| Accuracy | ± 3% FS |
| Resolution | 0.1 |
| Interference | ClO₄⁻, I⁻, CN⁻, BF₄⁻, Cl⁻, NO₂⁻, organic acid ion |
| Temperature range | 0–50°C |
| Pressure range | 0–2 atm |
| Responding speed | 95% response within 30 seconds |
| Storage | Long term: dry storage; Short-term: stored in diluted nitrate standard solution |
| Measuring range | 0.5 mg/L – 62,000 mg/L |
| pH range | 2.5–11 PH |
| Output impedance | 20–50 MΩ |
| Maintenance and cleaning | Deionized water and treated with diluted nitrate standard solution |
| Temperature compensation | 10k / 22k / 2.252K / PT1000 / PT100 optional |
| Work online | Can |
| Equipotential point | 10 mg/L NO₃⁻ |
| Reference electrode | Double salt bridge, single hole ceramic liquid junction |
| Material | PMMA + PVC |
| Connector | Terminal |
| Application | Drinking water; waste water; surface water; sea water; ore; soil; Food; detection of nitrate ion in boiler circulating water |
The PRE740-A is a premium-grade Nitrate Ion Selective Electrode built for demanding technical environments. With its wide concentration range, strong resistance to interference, and real-time online monitoring support, it delivers exceptional accuracy and reliability.
Whether you’re a water quality expert, agricultural engineer, or industrial analyst, the PRE740-A provides a cost-effective and powerful solution for nitrate measurement.
👉 Optimize your nitrate detection process today—choose the PRE740-A for unmatched precision and durability.
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