Lead (Pb) is a highly toxic heavy metal that severely threatens human health. It adversely affects multiple organ systems, including the nervous, hematopoietic, digestive, urinary, reproductive, cardiovascular, endocrine, immune, and skeletal systems, with the nervous and hematopoietic systems being most vulnerable. Critically, lead exposure disrupts growth and cognitive development in infants and children, impairing memory, learning, and neural behavior—severe cases may result in dementia. For children, ‌blood lead levels (BLL) ≥100 μg/L‌ are diagnostic of lead poisoning, regardless of symptoms. Extensive global studies confirm a significant correlation between childhood BLL and reduced IQ.

>>Principle

This product employs the ‌spectrophotometric method‌ for lead detection. After mixing the water sample with a conditioning agent, all forms of lead are converted to lead ions (Pb²⁺). Under alkaline conditions and in the presence of a sensitizer, Pb²⁺ reacts with an indicator to form a ‌colored complex‌. The analyzer detects this color intensity change, converts it into lead concentration values, and outputs the results. The amount of colored complex generated corresponds to the total lead concentration.

>>Technical Parameter

‌Test Method‌	Spectrophotometric Detection
‌Measuring Range‌	0~10mg/L (segmented measurement, expandable)
Detection Limit	≤0.05mg/L
Resolution	0.001mg/L
Accuracy	±10% ‌or‌ ±0.1 mg/L (whichever is greater)
‌Repeatability‌	10% ‌or‌ 0.1 mg/L (whichever is greater)
‌Drift (24h)‌	Zero drift: ±0.05 mg/L Span drift: ±10%
‌Measurement Time‌	<20min (digestion time adjustable)
‌Measurement Modes‌	Adjustable time interval, fixed time point, or triggered measurement
‌Calibration Modes‌	Automatic calibration (1~99 days adjustable) Manual calibration based on actual water samples
‌Maintenance Cycle‌	1 month per session; ~30min per maintenance
‌Human-Machine Interface‌	Touchscreen display and command input
‌Self-Diagnosis & Protection‌	Self-diagnoses operational status; retains data during anomalies/power outages Automatically clears residual reactants and resumes operation after reset/power recovery
‌Data Storage‌	5-year data capacity
‌Input Interface‌	Digital input
‌Output Interfaces‌	1× RS232, 1× RS485 2× 4~20mA analog outputs
‌Operating Environment‌	Indoor use; recommended temperature: 5~28℃, humidity ≤90% (non-condensing)
‌Power Supply‌	Voltage: AC 220±10% V Frequency: 50±0.5 Hz Power: ≤150W (excluding sampling pump)
‌Dimensions‌	520H × 370W × 265D (mm)

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products details

Lead Pb Online Water Quality Analyzer Spectrophotometric Detection Method‌

Online Water Quality Monitor

Multi Parameter Water Quality Monitor

PH ORP Meter

Conductivity Meter

Dissolved Oxygen Meter

Ion-selective Meter

Residual Chlorine Meter

Turbidity Analyzer

TSS Analyzer

COD Analyzer

Optical Water Quality Sensor

Ultrasonic Meter

Water Quality Monitoring Accessories

Online Water Quality Monitor

Drinking Water Monitoring

Industrial Wastewater Monitoring

Aquaculture water Quality Monitoring

Boiler Water Monitoring

Multi Parameter Water Quality Monitor

PH ORP Meter

PH ORP Transmitter And Sensor

Portable PH ORP Meter

Desktop PH ORP Meter

Conductivity Meter

Conductivity Transmitter And Sensor

Portable Conductivity Meter

Desktop Conductivity Meter

Dissolved Oxygen Meter

Dissolved Oxygen Transmitter And Sensor

Portable Dissolved Oxygen Meter

Desktop Dissolved Oxygen Meter