ACITEK's Best Ph Meter for Water

Industrial waste water is discharged during the production process.it is an important cause of environmental pollution, especially water pollution. Therefore, industrial waste water must meet certain standards before discharged or enter the sewage treatment plant for treatment. Industrial waste water discharge standards are also classified by industries,such as paper industry,oily wastewater from Offshore Oil Development Industry, textile and dyeing waste water,food process,synthetic ammonia industrial waste water,steel industrial,electroplating waste water,calcium and polyvinyl Chloride industrial water,coal Industry,phosphorus industry water pollutant discharge,calcium and polyvinyl chloride process water,hospital medical wastewater,pesticide wastewater, metallurgical wastewater Industrial wastewater monitoring and testing parameters:PH, COD, BOD, petroleum, LAS, ammonia nitrogen, color, total arsenic, total chromium, hexavalent chromium, copper, nickel, cadmium, zinc, lead, mercury, total phosphorus , chloride, fluoride, etc. Domestic wastewater testing test: PH, color, turbidity, odor and taste, visible to the naked eye, total hardness, total iron, total manganese, sulfuric acid, chloride, fluoride, cyanide, nitrate, total number of bacteria, total large intestine Bacillus, free chlorine, total cadmium, hexavalent chromium, mercury, total lead, etc. Urban drainage waste water monitoring parameters: Water temperature (degrees), color, suspended solids, dissolved solids, animal and vegetable oils, petroleum, PH value, BOD5, CODCr, ammonia nitrogen N,) total nitrogen (in N), total phosphorus (in P), anionic surfactant (LAS), total cyanide, total residual chlorine (as Cl2), sulfide, fluoride, chloride , sulphate, total mercury, total cadmium, total chromium, hexavalent chromium, total arsenic, total lead, total nickel, total strontium, total silver, total selenium, total copper, total zinc, total manganese, total iron, volatile phenol, Trichloromethane, carbon tetrachloride, trichloroethylene, tetrachloroethylene, adsorbable organic halides (AOX, in terms of Cl), organophosphorus pesticides (in terms of P), pentachlorophenol.

Drinking water safety is clearly a critical priority.Yet the number of threats to water safety continues to grow daily, and include animal and human waste, improper disposal of chemicals, pesticides, and deep earth injection of hazardous materials. Contamination is also a threat due to improper water treatment and disinfection procedures, as well as from poorly maintained water distribution systems.

The Safe Drinking Water Act, has established national health-based standards that address both man-made and naturally occurring contamination. Compliance requires consistent, accurate measurement of water parameters performed in the lab, field, and online. While many measurements can be made in the lab, key variables such as pH, conductivity, fluoride, and chlorine can also be measured online in real-time to warn immediately if limits are exceeded.

Usually there is four steps for drinking water process
First step is Pre-treatment for source water
Second step is Filtration
Third step is disinfection process
Fourth step is distribution ,we have to measure pH,turbidity,hardness,residual chlorine,conductivity(TDS),then we can know the potential risks or threaten to public heath on time.the residual chlorine value should be over 0.3mg/L when be piped out from drinking water plant, and over 0.05mg/L at end of pipe network.turbidity must less 1NTU,pH value is between 6.5~8,5,pipe will be corrosive if pH value is less 6.5pH and easy scale if pH is over 8.5pH.

At present online water quality monitoring system can monitor water quality 24 hours and real time.it also provide quickly and correct information to decision-makers based on water quality changes in real time,Thereby providing people with healthy and safe water quality.

Updated Environmental Regulations Bring New Compliance Requirements for Wastewater Online Monitoring Equipment


With the official implementation of China’s HJ 212-2025 Technical Requirements for Data Transmission of Pollutant Automatic Monitoring System and the upcoming enforcement of the Ecological Environment Code, stricter supervision is being carried out on wastewater discharge monitoring. Regulators have raised higher standards for online water quality instruments used at wastewater outlets, including pH, dissolved oxygen and conductivity sensors. Factories in chemical, pharmaceutical, food & beverage industries, together with industrial wastewater treatment plants, are now entering a critical period to evaluate and upgrade their monitoring systems.

Core Updates in New Environmental Standards

Full data traceability to prevent distorted monitoring results Unique device identification codes are required for all field monitoring instruments during network access. Raw measurement data, calibration logs and equipment operation records must be stored for long-term review. Any modification to instrument parameters will be recorded automatically. Unauthorized devices cannot connect to official environmental monitoring platforms.
Higher standards for long-term measurement stability Wastewater usually contains sludge, weak acid, alkali and dissolved salts. Regulators demand sensors with reliable temperature compensation and low measurement drift. Sensors prone to corrosion, scaling and frequent deviation will be regarded as invalid monitoring equipment during official inspections.
Unified communication protocol for seamless data networking New standards standardize data interaction between sensors, transmitters and data collectors. Instruments shall support standard Modbus-RTU and stable 4–20mA analog signals. Outdated equipment with unstable signal output or incompatible communication cannot meet current compliance demands.

ACITEK Solutions for Regulatory Compliance
ACITEK offers a complete portfolio of water quality sensors and transmitters fully adapted to the latest environmental monitoring requirements: • AC580 series conductivity sensors, industrial pH electrodes and DO sensors feature built-in PT1000 temperature compensation. Wetted SS316L material provides anti-corrosion performance in complicated wastewater media. • G100 compact DIN rail transmitters support 4–20mA active output + RS485 Modbus dual signals. All parameter changes are logged automatically to meet traceability requirements. • Complete accessories including flow cells, immersion holders and mounting fittings comply with HJ installation & operation specifications.

Recommendations for End Users & System Integrators

For existing monitoring stations: Test sensor accuracy and signal stability in advance. Replace aging instruments in phases to avoid compliance risks.
For new wastewater treatment projects: Adopt integrated monitoring systems with both analog and digital communication to satisfy long-term regulatory demands.
Form standardized maintenance schedules, regularly clean and calibrate sensors and archive all calibration documents.

ACITEK provides professional technical support and customized online monitoring packages for wastewater discharge applications. If you need a complete solution for pH, DO and conductivity monitoring in wastewater projects, please contact our engineering team.