News
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Lianhua Technology LH-C600: A Portable Multi-Parameter Water Quality Testing Solution for Complex Outdoor Environments
In scenarios such as ecological monitoring, environmental law enforcement, third-party testing, and corporate self-inspection of discharge, on-site water quality testing often faces multiple challenges. Traditional laboratory testing involves long turnaround times and slow feedback, failing to me...Read more -
Lianhua Technology LH-E200 Portable Multi-Parameter Water Quality Analyzer: Revolutionizing Field Monitoring and Ushering in a New Era of Versatile, Portable Testing
Water quality monitoring encompasses a wide range of aquatic environments. Whether it involves routine ecological inspections of rivers and lakes, aquaculture water management, emergency monitoring during rainstorms and floods, or on-site industrial wastewater screening, there are stringent deman...Read more -
Tired of constantly restocking formaldehyde reagents? Lianhua offers two reagent options—choose the one that fits your needs for a hassle-free experience!
Formaldehyde is a key parameter in water quality monitoring and industrial waste gas analysis. Traditional reagents require manual preparation—a tedious process—and have a short shelf life (only one month). To address these common industry challenges, Lianhua Technology has launched two rapid for...Read more -
QQ Food Wastewater Treatment Plant Water Quality Monitoring Training Successfully Completed! Lianhua Tech Provides Hands-on Instruction to Help Beginners Get Up to speed quickly
The client is a food industry manufacturer—you have likely tasted their delicious nut products. They recently wanted to measure the COD (Chemical Oxygen Demand) of their wastewater and compare the results with their online monitoring data to gain a better understanding of their water quality. We ...Read more -
What should be done if water samples turn turbid during ammonia-nitrogen testing? Lianhua Technology outlines seven common causes and corresponding solutions.
During the process of testing water samples for ammonia-nitrogen, turbidity sometimes occurs after reagents are added. Based on common inquiries from users, Lianhua Technology has compiled the following seven categories of potential causes and corresponding solutions for reference during actual o...Read more -
Lianhua Technology Offers Solutions for Rapid BOD Measurement
I. Current Major BOD Measurement Methods BOD stands for Biochemical Oxygen Demand. Common detection methods include the coulometric method, dilution and seeding method, activated sludge method, microbial electrode method, mercury-based differential pressure method, and mercury-free differential p...Read more -
Troubleshooting Plan for Abnormal Reading Fluctuations in COD Rapid Digestion Spectrophotometry
When performing water quality testing using the COD rapid digestion spectrophotometry method, frequent fluctuations or abnormal variations in instrument readings can directly compromise the accuracy of results, making it impossible to correctly determine the COD content of the water sample. To ra...Read more -
Details that lead to BOD5 data deviation/scrap, Lianhua Technology will answer for you
1. Water sample collection and storage (most easily ignored) 1. The sampling bottle is not completely filled, leaving bubbles When air is brought in, the initial DO is high; shaking during transportation will further reoxygenate the product, resulting in a high result. ✅ The bottle must be full, ...Read more -
Why is the measured ammonia nitrogen level higher than the total nitrogen level? Lianhua Technology explains testing interferences and troubleshooting methods
During water quality testing, analysts may encounter a counterintuitive phenomenon: the measured value for ammonia nitrogen exceeds that of total nitrogen. Based on testing principles, total nitrogen encompasses various forms—such as ammonia nitrogen, nitrate nitrogen, and nitrite nitrogen—meanin...Read more -
How can the issue of the ammonia nitrogen value exceeding the total nitrogen value be resolved?
When the measured value of ammonia nitrogen (NH₃-N) exceeds that of total nitrogen (TN) during wastewater testing—a phenomenon known as “inversion”—the core strategy for resolution is “systematic investigation followed by targeted elimination.” Since TN theoretically encom...Read more -
Why is a ‘blank sample’ essential in water quality testing?
In water quality testing, missing even a single step compromises accuracy. Whether at a wastewater treatment plant, a municipal waterworks, or a third-party environmental testing lab, water quality analysis is a meticulous task. Many novice analysts wonder: why must we run an extra ‘blank s...Read more -
How do you select the right model from the wide range of Lianhua instruments?
Recommendations are made based on a comprehensive assessment of the client’s specific needs, including usage scenarios, target parameters, pollutant concentrations, testing frequency, and budget. A prime example is the application of the Lianhua Technology 5B-6C (V10) water quality analyzer...Read more
