Company News
-
Lianhua Technology’s water quality analyzer shines with splendor at the IE Expo China 2024
Preface On April 18, the 25th China Environmental Expo opened grandly at the Shanghai New International Expo Center. As a domestic brand that has been deeply involved in the field of water quality testing for 42 years, Lianhua Technology made a wonderful appearance...Read more -
Fluorescence dissolved oxygen meter method and principle introduction
Fluorescence dissolved oxygen meter is an instrument used to measure the concentration of dissolved oxygen in water. Dissolved oxygen is one of the important parameters in water bodies. It has an important impact on the survival and reproduction of aquatic organisms. It is also one of the import...Read more -
UV oil meter method and principle introduction
The UV oil detector uses n-hexane as the extraction agent and complies with the requirements of the new national standard “HJ970-2018 Determination of Water Quality Petroleum by Ultraviolet Spectrophotometry”. working principle Under the condition of pH ≤ 2, the oil substances in the...Read more -
Infrared oil content analyzer method and principle introduction
The infrared oil meter is an instrument specially used to measure the oil content in water. It uses the principle of infrared spectroscopy to quantitatively analyze the oil in the water. It has the advantages of fast, accurate and convenient, and is widely used in water quality monitoring, envir...Read more -
![[Customer Case] Application of LH-3BA (V12) in food processing enterprises](https://cdn.globalso.com/lhwateranalysis/119.jpg)
[Customer Case] Application of LH-3BA (V12) in food processing enterprises
Lianhua Technology is an innovative environmental protection enterprise specializing in the research and development, production, sales and service solutions of water quality testing instruments. Products are widely used in environmental monitoring systems, scientific research institutes, daily c...Read more -
What to do if COD is high in wastewater?
Chemical oxygen demand, also known as chemical oxygen consumption, or COD for short, uses chemical oxidants (such as potassium dichromate) to oxidize and decompose oxidizable substances (such as organic matter, nitrite, ferrous salts, sulfides, etc.) in water, and then Oxygen consumption is calcu...Read more -
What are the advantages and disadvantages of the reflux titration method and the rapid method for COD determination?
Water quality testing COD testing standards: GB11914-89 “Determination of chemical oxygen demand in water quality by dichromate method” HJ/T399-2007 “Water Quality – Determination of Chemical Oxygen Demand – Rapid Digestion Spectrophotometry” ISO6060 “Det...Read more -
What should you pay attention to when using the BOD5 meter?
What should you pay attention to when using the BOD analyzer: 1. Preparation before experiment 1. Turn on the power supply of the biochemical incubator 8 hours before the experiment, and control the temperature to operate normally at 20°C. 2. Put the experimental dilution water, inoculation water...Read more -
New arrival:Optical dissolved oxygen demand meter LH-DO2M(V11)
LH-DO2M (V11) portable dissolved oxygen meter adopts fluorescence dissolved oxygen measurement technology, does not consume oxygen, and is not affected by factors such as sample flow speed, stirring environment, chemical substances, etc. It has strong anti-interference ability and is a multi-func...Read more -
Good news: Winning bid! Lianhua got an order of 40 sets of water quality analyzer from government departments
Good news: Winning bid! Lianhua won the bid for 40 sets of water quality measuring instruments for the ecological law enforcement equipment project in Zhengzhou City, Henan Province, China! New year, new atmosphere, good luck comes in the Year of the Dragon. Recently, good news came from Lianhua...Read more -
Effects of COD, ammonia nitrogen, total phosphorus and total nitrogen on water quality
COD, ammonia nitrogen, total phosphorus and total nitrogen are common major pollution indicators in water bodies. Their impact on water quality can be analyzed from many aspects. First of all, COD is an indicator of the content of organic matter in water, which can reflect the pollution of organi...Read more -
Measurement method of suspended solids: gravimetric method
1. Measurement method of suspended solids: gravimetric method 2. Measuring method principle Filter the water sample with a 0.45μm filter membrane, leave it on the filter material and dry it at 103-105°C to a constant weight solid, and obtain the suspended solids content after drying at 103-105°C....Read more
