AJ-3700 Gas Molecular Absorption Spectrometer

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AJ-3700 Gas Molecular Absorption Spectrometer

Product ID：FGqxfz008

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberAJ-3700

Brand NameANJIEHUANBAO

Payment TermsTT，PAYPAL，Alibaba.com Pay

AJ-3700 Gas Molecular Absorption Spectrometer
Product Overview
The AJ-3700 Gas Molecular Absorption Spectrometer is a high-performance analytical instrument designed for the determination of sulfides and nitrides in water samples. Utilizing advanced Gas Molecular Absorption Spectroscopy (GMAS) technology, it delivers highly sensitive, accurate, and reliable analysis for environmental monitoring and laboratory applications.
The instrument is suitable for testing surface water, groundwater, seawater, drinking water, domestic wastewater, and industrial wastewater, making it an ideal solution for environmental laboratories, water treatment facilities, research institutes, and quality control departments.

Key Features & Advantages
• Dedicated spectral light source for high-precision characteristic absorption measurement
• Modular instrument design for simplified maintenance and reliable operation
• Single-point calibration automatically generates the calibration curve through intelligent dilution, reducing preparation time
• Automatic dilution with dilution ratios up to 40× for high-concentration samples
• Dual pressure monitoring system (mechanical + electronic) for enhanced operational safety
• Precision purge homogenization system with stabilized gas supply and constant-flow valve
• User-definable purge time and homogenization process
• Online semiconductor moisture removal system with PWM temperature feedback for efficient moisture elimination
• Continuous sample introduction for improved testing efficiency
• Built-in sintered gas-liquid separation technology improves gas-liquid separation efficiency and increases measurement sensitivity by 300%
• Excellent baseline stability and outstanding linearity for trace analysis

Working Principle
The AJ-3700 operates using Gas Molecular Absorption Spectroscopy (GMAS). During analysis:
• The water sample undergoes chemical pretreatment to convert the target analyte into a gaseous form.
• The generated gas is separated efficiently using the built-in gas-liquid separation module.
• Moisture is automatically removed through the semiconductor dehydration system to eliminate interference.
• The purified gas passes through the optical chamber, where it absorbs light at characteristic wavelengths.
• The detector measures the absorbance, and the system automatically calculates the analyte concentration based on the calibration curve.
This advanced process ensures high sensitivity, excellent repeatability, and reliable quantitative analysis.

Technical Specifications

Parameter	Specification
Model	AJ-3700
Measurement Principle	Gas Molecular Absorption Spectroscopy (GMAS)
Target Analytes	Sulfides, Nitrides
Applicable Samples	Surface water, groundwater, seawater, drinking water, domestic wastewater, industrial wastewater
Wavelength Range	190–900 nm
Wavelength Accuracy	±0.2 nm
Wavelength Repeatability	0.1 nm
Baseline Noise	±0.0002 Abs
Baseline Drift	0.0005 Abs / 30 min
Calibration Linearity	r > 0.9998
Sample Introduction	Continuous sampling
Automatic Dilution	Up to 40×
Pressure Monitoring	Mechanical + Electronic dual monitoring
Moisture Removal	Semiconductor automatic dehydration
Gas-Liquid Separation	Built-in sintered gas-liquid separation technology

Typical Applications
The AJ-3700 Gas Molecular Absorption Spectrometer is widely used in:
• Environmental monitoring laboratories
• Drinking water quality analysis
• Surface water and groundwater testing
• Seawater environmental monitoring
• Municipal wastewater treatment plants
• Industrial wastewater monitoring
• Environmental protection agencies
• Universities and research institutes
• Chemical and industrial laboratories

Comparison: AJ-3700 vs Conventional Water Analysis Instruments

Feature	AJ-3700 Gas Molecular Absorption Spectrometer	Conventional Spectrophotometer
Detection Technology	Gas Molecular Absorption Spectroscopy	Colorimetric Analysis
Calibration	Automatic single-point calibration	Multi-point manual calibration
Sample Dilution	Automatic (up to 40×)	Manual dilution required
Gas-Liquid Separation	Integrated high-efficiency separation	External or standard separation
Moisture Removal	Automatic semiconductor system	Manual or basic drying
Pressure Protection	Dual monitoring system	Limited protection
Sensitivity	Up to 300% higher with optimized gas separation	Standard sensitivity
Testing Efficiency	Continuous automatic sampling	Batch manual operation

FAQ
Q1: What substances can the AJ-3700 measure?
It is specifically designed for the determination of sulfides and nitrides in various water samples.
Q2: Does the instrument support automatic dilution?
Yes. It automatically dilutes over-range samples by up to 40 times, reducing manual preparation.
Q3: What types of water can be analyzed?
The instrument is suitable for surface water, groundwater, seawater, drinking water, domestic wastewater, and industrial wastewater.
Q4: How does the moisture removal system improve accuracy?
The integrated semiconductor dehydration system efficiently removes water vapor before detection, minimizing interference and improving measurement stability.
Q5: What are the advantages of the built-in gas-liquid separation system?
The advanced sintered gas-liquid separation technology significantly improves separation efficiency and enhances analytical sensitivity by up to 300% compared with conventional designs.

Why Choose the AJ-3700 Gas Molecular Absorption Spectrometer?
The AJ-3700 Gas Molecular Absorption Spectrometer combines high-sensitivity optical detection, intelligent automation, automatic dilution, efficient gas-liquid separation, and advanced safety monitoring into a single analytical platform. Designed for modern environmental and water quality laboratories, it delivers fast, accurate, and reliable analysis of sulfides and nitrides while reducing manual operation and improving laboratory productivity.

Introduction:
AJ-3700 gas phase molecular absorption spectrometer is used for the determination of nitrides and sulfides in surface water, groundwater, seawater, drinking water, domestic sewage and industrial sewage.