News
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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 -
COD Analyzer Troubleshooting and Solutions
I. Breakdown of Core Causes for Device Errors 1. Hardware Contact Issues: Misaligned cuvette placement, sewage or debris in the slot, or obstruction of the optical path, preventing the device from reading sample data. 2. Reagent/Consumable Issues: Expired COD digestion reagents, uneven reagent mi...Read more -
Lianhua Tech: “Ammonia Nitrogen > Total Nitrogen” Observed in Pickling Wastewater Testing
I. Why does pickling wastewater testing often show Ammonia Nitrogen > Total Nitrogen? Ammonia Nitrogen (Nessler’s Method – N2/N3) reads falsely high. Pickling wastewater characteristics: High Cl⁻, heavy metals, acidic, potential presence of residual chlorine/organic matter. Nessler...Read more -
A Comprehensive Troubleshooting Guide for Significant Data Deviations in Water Quality Analyzers
Professionals in the water quality testing field have likely encountered this frustrating issue: shortly after calibration and following standard operating procedures, the test results fluctuate wildly. Discrepancies arise between parallel samples and repeat tests, or the results differ significa...Read more -
Lianhua Technology | A Commitment to Protecting Every Drop of Water: 43 Years of Water Quality Testing Services
Water is the source of life and a test of civilization. Since its founding in 1982, Lianhua Technology has dedicated 43 years to the industry, witnessing its development and setting a benchmark for full-cycle services through continuous innovation. In the long process of water quality protecti...Read more -
![Lianhua Technology | BOD Detection [Pitfall Avoidance Guide]](https://cdn.globalso.com/lhwateranalysis/BOD3121.jpg)
Lianhua Technology | BOD Detection [Pitfall Avoidance Guide]
BOD (Biochemical Oxygen Demand) is a key indicator for measuring the amount of oxygen consumed by microorganisms when decomposing organic pollutants in water. Have you encountered various problems when conducting BOD5 experiments? We have collected some common questions and provided concise answ...Read more -
LH-JE113 Extraction System | Bringing the Intelligent Era of Laboratory Extraction!
Extraction is a crucial step in pretreatment for chemical analysis, environmental monitoring, and scientific research. Traditional manual extraction methods are not only time-consuming and labor-intensive but also suffer from poor repeatability, severely impacting experimental efficiency and dat...Read more -
Lianhua Technology Organized All Employees to Watch the September 3rd Military Parade
On September 3, 2025, China held a grand military parade in Tiananmen Square, the capital, to commemorate the 80th anniversary of the victory of the Chinese People’s War of Resistance Against Japanese Aggression and the World Anti-Fascist War. The parade aimed to highlight the historical s...Read more -
Characteristics of petrochemical wastewater and detection of petroleum wastewater
Petrochemical is a series of organic processing processes based on petroleum as raw material, mainly based on cracking, refining, fractionation, reforming and synthesis. The wastewater generated in the production has complex components, large fluctuations in water quality and quantity, high conce...Read more -
Application, development prospects and testing of urban sewage treatment technology
1 Characteristics and treatment requirements of sewage in small towns 1.1 Characteristics of sewage in small towns The characteristics of sewage in small towns are determined by various factors. Due to the small population size and low tap water penetration rate of small towns, the sewage dischar...Read more -
Analysis of China’s water pollution control industry development policy, industry chain panorama, competition pattern and future prospects in 2025
Content summary: Water pollution control is the treatment of water bodies that can directly or indirectly affect human life and development around the crowd space, mainly including pollutant emission reduction and environmental restoration. In recent years, the state has successively issued a ser...Read more -
Application of Lianhua uv vis multi-parameter water quality analyzer LH-3BA(V12) in Food Processing Enterprises
The links that generate wastewater in the food industry mainly include the following aspects: Raw material cleaning: When cleaning raw materials such as vegetables, fruits, meat, and seafood, a large amount of wastewater containing mud, pesticide residues, and microorganisms will be generated. Fo...Read more
