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  Dissolved Oxygen (DO)(4)

  Dissolved oxygen (DO) refers to the oxygen that is dissolved in water, and the amount of oxygen that can dissolve is influenced by factors such as atmospheric pressure, water temperature, and salinity. It is used as an indicator of pollution in water bodies such as rivers, lakes, and marine areas, and is measured and managed for adjusting the amount of activated sludge (clusters of microorganisms) in treatment plants and sewage treatment facilities. Additionally, it is widely measured in various industrial applications, not limited to environmental monitoring, such as boiler water and ultrapure water in the semiconductor industry.

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  pH (hydrogen ion concentration)(8)

  pH is an indicator that shows the degree of acidity or alkalinity of an aqueous solution, defined as the logarithm of the reciprocal of the hydrogen ion concentration (or hydrogen ion activity), and is also referred to as the hydrogen index. The pH of pure water is neutral and is approximately pH 7; values higher than this indicate alkalinity, while lower values indicate acidity. The reactions of substances in water can change significantly depending on the pH, making it an important indicator of the chemical properties of water. For this reason, pH is widely measured not only in environmental monitoring but also in industrial applications.

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  Conductivity(5)

  The electrical resistance of water changes depending on the amount of dissolved electrolytes, and the greater the amount of dissolved electrolytes, the smaller the electrical resistance becomes. The reciprocal of the electrical resistance value of a solution with a cross-sectional area of 1 cm² and an electrode distance of 1 cm is called conductivity, expressed in S/cm, mS/cm, or μS/cm. It is used for measuring the purity of pure and ultra-pure water used in semiconductor and pharmaceutical factories, as well as for investigating the pollution of environmental water such as rivers and measuring the concentration of acids, alkalis, and salts contained in solutions.

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  Multi-measurement(5)

  It is a measuring device that can measure multiple parameters such as DO, pH/ORP, conductivity, and turbidity with one unit. It can be used for various applications, including benchtop models for laboratory use and portable models for field measurements.

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  BOD (Biochemical Oxygen Demand) / Respirometer(5)

  Biochemical oxygen demand (BOD) refers to the amount of oxygen required for the biochemical stabilization of degradable substances in water by aerobic microorganisms. It is generally expressed as the amount of oxygen consumed (O) over a period of five days at 20°C, measured in mg/L, and is used as an indicator of water pollution by organic substances. In addition to being measured as a comprehensive indicator of pollution in rivers and lakes, it is also measured as a water quality management parameter for effluents such as industrial wastewater.

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  COD (Chemical Oxygen Demand)(8)

  Chemical Oxygen Demand (COD) refers to the amount of oxygen (O) required to oxidize oxidizable substances in water under certain conditions, expressed in mg/L. Generally, COD is used as an indicator of water pollution caused by organic substances. It is measured as a comprehensive indicator of pollution in closed water bodies such as ports (marine areas) and lakes, as well as a water quality management parameter for effluents such as industrial wastewater.

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  TOC (Total Organic Carbon) / Endotoxin / Bioburden(51)

  Organic matter contained in household and factory wastewater serves as food for aquatic organisms. While BOD and COD represent the amount of oxygen consumed for the decomposition of organic matter, TOC is a water pollution indicator that expresses the absolute amount of carbon contained in organic matter. TOC measurements are conducted across a wide range of industrial fields, from wastewater and environmental water to boiler water, ultrapure water for semiconductors, and pharmaceutical manufacturing water.

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  Nitrogen and phosphorus(12)

  Nitrogen and phosphorus are considered indicators of eutrophication in closed water bodies such as bays (marine) and lakes, according to the enforcement order of the Water Pollution Prevention Act. They are particularly measured to maintain environmental standards or discharge standards. Ammoniacal nitrogen primarily originates from the decomposition of organic matter in urine and domestic wastewater, as well as from industrial effluents, making it a significant indicator of water quality pollution.

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  Residual chlorine and chlorine demand(8)

  Residual chlorine refers to the free available chlorine (free residual chlorine) and combined available chlorine (combined residual chlorine) such as chloramines that exist in water. It is measured in the management of chlorine concentration in chlorination processes for disinfection in water supply and various types of water.

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  Turbidity, color, SS (suspended solids)(8)

  Turbidity refers to the state in which fine particles are dispersed in water, and when light passes through the water, the transmitted light is reduced due to scattering or reflection by these fine particles, which hinders the inherent transparency of the water. It is expressed in degrees, with one degree corresponding to the turbidity when 1 mg of the standard substance polystyrene is contained in 1 liter of water.

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  MLSS - Sludge Interface(4)

  MLSS stands for Mixed Liquor Suspended Solids, and it is also referred to as the concentration of activated sludge solids (i.e., sludge concentration). In wastewater treatment processes, there is a method for purifying water quality using microorganisms, and the aggregation of these microorganisms is called activated sludge. The concentration of activated sludge is managed to determine whether it is in a desirable state for wastewater treatment. The sludge interface refers to the boundary between the settled sludge in the treatment tank (i.e., sedimentation tank) and the supernatant. By managing factors such as the depth of the interface and its thickness, it serves as an indicator for withdrawing sludge to prevent the outflow (carryover) of settled sludge, ensuring proper treatment.

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  Multi-parameter water quality tester(20)

  It is a device that can measure multiple types of items, such as COD, nitrogen, phosphorus, and heavy metals, from a built-in program. Measurement methods include spectrophotometry and colorimetry. Additionally, there are devices that measure only a single item from a variety of measurement items.

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  Food environment(1)

  In fresh food and food processing factories, analytical instruments are used for measuring the residue of sterilizing agents (hydrogen peroxide) in products before completion.

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  Soil and VOC (Volatile Organic Compounds)(1)

  We will introduce screening surveys for contamination by harmful substances such as heavy metals (hexavalent chromium, fluoride, lead, etc.) in the soil, investigations to narrow down the extent of contamination, and VOC (volatile organic compounds) analysis equipment.

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  Water Quality Monitoring Network System(7)

  The digital communication-based IQ sensor network system is very economical compared to traditional analog network systems, significantly reducing not only the initial installation costs but also the time and expenses associated with installation work. Additionally, it is a next-generation water quality monitoring network system that can be easily expanded by combining various modules.

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  Others(5)

  We will introduce measurement kits for assessing the suitability of drinking water and microbiological testing kits.

Product/Service List (112)