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TR6900 Multi-parameter colorimeter
The TR 6900 integrates proven technologies in the field of Tongao water quality analysis, and upgrades the 360° rotating colorimetric technology to further··· -
VN3100 Portable Turbidimeter
The VN3100 Portable Turbidity Meter is a high-precision, portable turbidity measuring instrument launched by VVNA Micro-Nano Technology. It complies with th··· -
VN Portable Multi-parameter Colorimeter
The VN1000 is a powerful, reliable portable multi-parameter water quality analyzer launched by VVNA. The detection method for each parameter is designed in ··· -
VI1000 Portable Multi-parameter Colorimeter
The VI 1000 is a powerful and reliable portable multi-parameter water quality analyzer launched by VVNA. It can rapidly determine dozens of routine water qu··· -
VI-CL100 Portable Residual Chlorine Colorimeter
The VI-CL100 is a portable water quality residual chlorine analyzer launched by VVNA. With the industry-recognized DPD detection method at its core, it prov··· -
VI-CL101 Portable Total Chlorine Colorimeter
The VI-CL101 is a portable water quality residual chlorine analyzer launched by VVNA. With the industry-recognized DPD detection method at its core, it prov··· -
VI-CL103 Portable Chloramines Analyzer
Compact and portable, the VI-CL103 is a powerful, reliable portable water quality combined chlorine analyzer launched by VVNA. Designed in accordance with i··· -
VN-M50 Portable Microbial Analyzer Kit
The VN-M50 Portable Microbial Detection Kit enables the quantitative analysis of various microbial content, including total bacterial count, total coliforms··· -
VI-HS08 Mariculture Water Quality Analyzer
The VI-HS08 is a portable water quality analyzer specially designed by VVNA for marine aquaculture. It covers all routine testing items for marine aquacultu··· -
VI-DS08 Aquaculture Colorimeter(Freshwater)
The VI-DS08 is a portable water quality analyzer specially designed by VVNA for freshwater aquaculture. It covers all routine testing items required for fre···
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Drinking Water
01Drinking Water
Drinking Water Quality Analysis Solution
The parameters requiring analysis and testing for drinking water include free Chlorine, residual Chlorine, total Chlorine, dioxide Chlorine, chroma(degree), turbidity(NTU), permangnate index(counted in O₂), pH value, total coliforms, Escherichia coli, total bacterial count, odor and taste, visible substances to the naked eye. This solution is a tailor-made professional package deceloped specifically for the practical challenges faced by water plants, such as scattered distribution, low water supply capacity, and insufficient professional background of water treatment person. -
Municipal Wastewater
02Municipal Wastewater
Municipal Wastewater Quality Analysis Solutions
VVNA multi-parameter water quality analyzer can quickly determine dozens of pollution parameters in the water, including ODcr, LAS, ammonia nitrogen, colority, turbidity, total hardness, total iron, total manganese, sulfates, chlorides, fluorides, cyanides, nitrates, free chlorine, total cadmium, hexavalent chromium, mercury and total lead. Detection Scope: Wastewater, industrial wastewater, domestic wastewater, breeding farm wastewater, river wastewater, water source wastewater, wastewater treatment plants, environmental impact assessment (EIA) wastewater, and wastewater before and after treatment. -
Emergency Water Quality Monitoring
03Emergency Water Quality Monitoring
Emergency Water Quality Testing Solutions
The sudden environmental pollution accident is different from a general one in that it is characterized by abrupt occurrence, unpredictability and severe harmfulness. Reducing environmental pollution and ecological damage caused by such accidents, and safeguarding the lives and property of the people, is an extremely important and urgent task in the current field of environmental monitoring and protection. VVNA can provide users with suitable and comprehensive emergency testing solutions to facilitate ecological environment governance.
Solution
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![Municipal Wastewater]()
Municipal Wastewater Solutions
Municipal Wastewater
![Municipal Wastewater]()
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![Secondary Water Supply]()
Secondary Water Supply Solution
Secondary Water Supply
![Secondary Water Supply]()
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![Tap Water Industry]()
Tap Water Industry Solutions
Tap Water Industry
![Tap Water Industry]()
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![Health Industry]()
Heath Industry Solutions
Health Industry
![Health Industry]()
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![Goverment, Education, Scientific research]()
Enviromental Protection Industry Solutions环保行业解决方案
Goverment, Education, Scientific research
![Goverment, Education, Scientific research]()
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![Hydrology and Water Conservancy Industry]()
Hydrology and Water Conservancy Industry Solutions
Hydrology and Water Conservancy Industry
![Hydrology and Water Conservancy Industry]()
Drinking Water Quality Analysis Solutions
VVNA delivers tailored water quality testing solutions for a range of water supply and testing scenarios—from urban waterworks and water utilities, to water quality te···
Emergency Water Quality Testing Solutions
Sudden environmental pollution accidents differ from conventional environmental pollution in that they feature abrupt onset, unpredictability and serious harm. Minimizi···
Aquaculture Water Quality Testing Solutions
Key water quality parameters for aquaculture monitoring include pH value, dissolved oxygen, ammonia nitrogen, nitrite and more. These indicators directly dictate the he···
Pool Water Quality Testing Solutions
Pool Water Quality Testing Solutions: According to Hygienic Indicators and Limit Requirements for Public Places (GB 37488-2019), the water quality standard limits for a···
Municipal Sewage Water Quality Testing Solutions
Urban wastewater consists of domestic wastewater, industrial wastewater and runoff wastewater in urban areas. Collected through urban pipe networks, it should be treate···
Industrial Water Quality Testing Solutions
The VVNA Industrial Water Inspection and Testing Solution covers boiler feedwater and industrial circulating cooling water, and is capable of detecting parameters inclu···
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Water Quality Testing Application Cases for Swimming Pools and Spas
Swimming pools and SPAs have become accessible venues for exercise and recreation for a growing number of people. To ensure a safe and healt···
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Application of the VN3100 Portable Turbidimeter in the Tap Water Industry
To ensure water supply safety, a municipal tap water group has added over 100 water quality monitoring points. As one of the most important ··· -
Application of the VN3100 Portable Turbidimeter in the Chemical Industry
The client, a high-tech enterprise in the chemical new materials field, uses VVNA VN3100 Series Portable Turbidity Meters to test water tu···
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What industries is the VN3100 Portable Turbidimeter suitable for?
What industries is the VN3100 Portable Turbidimeter suitable for?Suitable Industries: The VN3100···Click for Details>> -
How can the VN3100 Portable Turbidimeter deliver more accurate data?
For accurate test results, follow these guidelines:Remove air bubbles from the sample.Calibrate ···Click for Details>> -
What is the measurement range of the VN3100 Portable Turbidimeter?
The measurement range of the VN3100 Portable Turbidimeter is 0–1000 NTU.Click for Details>> -
How to eliminate the impact caused by stray light on the VN3100 Portable Turbidimeter?
Stray light allows excess scattered light to enter the sample detector, resulting in higher meas···Click for Details>> -
How can the error caused by air bubbles be eliminated for the VN3100 Portable Turbidimeter?
Let the sample stand undisturbed for a period of time to eliminate air bubbles; Perform ultrason···Click for Details>> -
How can the error caused by the sample cuvette be reduced for the VN3100 Portable Turbidimeter?
How to Reduce Errors Caused by the Sample Cell in the VN3100 Portable Turbidimeter?When the Samp···Click for Details>>
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2025-12-19>
Stop Guessing in Wastewater Sampling! Grab Samples vs. Composite Samples – No More Dilemmas After Reading This
In wastewater pollution source monitoring, there is a critical question that always stumps many frontline technicians: should we collect grab samples or composite samples for sampling?Actually, the an··· -
2025-12-17>
Water Quality Encyclopedia | Unstable COD Test Results? How Many of These 8 Hidden Pitfalls Have You Fallen Into?
When performing rapid COD testing, have you often run into such a dilemma?You clearly follow the standard procedure step by step, yet the test results for the same water sample fluctuate drastically—··· -
2025-12-03>
Water Quality Testing: Core Parameters & Authoritative Methods (2025)
Water quality testing is a core technical means for evaluating water safety, identifying pollution hazards, and safeguarding water consumption health. Different testing parameters correspond to distin··· -
2025-11-18>
Ammonia Nitrogen > Total Nitrogen? Complete Solutions for Causes and Troubleshooting — VVNA Guides You Through Core Contradictions in Water Quality Testing
“Total nitrogen clearly includes ammonia nitrogen, so how can the test result for ammonia nitrogen be higher instead?”“The sum of ammonia nitrogen and nitrate nitrogen exceeds total nitrogen—clien··· -
2025-11-03>
Knowledge Popularization | Top 10 Q&A on Drinking Water Safety and Health
Water is an essential substance for all life on Earth to survive, and it is indispensable for human daily life and production activities. From a physiological perspective, the water content of an adul··· -
2025-11-01>
GB 5749-2022 Key Insights: E. coli Detection & Prevention in Drinking Water
The microbial safety of drinking water for daily use is the "first line of defense" for safeguarding public health. As the core criterion for drinking water safety in China, the National Standard for ··· -
2025-10-28>
pH & Alkalinity (ALK) Complete Guide: From Basics to Practical Use
In numerous fields such as water quality monitoring, industrial production, and environmental governance, pH (acidity-alkalinity) and ALK (alkalinity) are two frequently used core indicators. While in··· -
2025-10-17>
Drinking Water 101: What Secrets Does Water Color Hold? Master the Color Index Now!
When you turn on the faucet, have you ever noticed the color of the water? Is only clear and transparent water considered normal? In fact, the "colority" of drinking water for daily use is an import···
Founded in 2019, VVNA is a subsidiary of Shenzhen Tongao Technology Co., Ltd., with its headquarters located in Shenzhen. We are a technology-driven enterprise integrated with the R&D, manufacturing, sales, and after-sales service of laboratory water quality analysis instruments, portable water quality testers, onl...Click for Details>>
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