High-Chloride COD Online Water Quality Monitor is a dedicated product developed by PhotoTek for wastewater from high-chloride industries and seawater. It features a high upper limit for chloride ion detection and is capable of testing water samples with high chloride content and low COD values.

The EMS6000 multi-parameter on-line monitoring instrument for water supply adopts advanced technologies to integrate multiple key water quality indicators, realizing real-time and precise monitoring of finished water, secondary water supply and pipe network terminal water in water plants. Optional monitoring parameters include turbidity, residual chlorine / chlorine dioxide / total chlorine / ozone, pH, temperature, conductivity, ORP and dissolved oxygen. Data can be transmitted to monitoring early warning and operation & maintenance platforms in real time via RS485 and multiple 4-20mA interfaces, realizing rapid analysis and response, unattended operation and scientific early warning to improve maintenance efficiency and ensure water supply safety.

The CODcr water quality online analyzer is developed by Langshi by combining advanced instrument manufacturing technologies from both domestic and international sources. It uses the national standard testing method "Potassium Dichromate Digestion Spectrophotometry" as the detection principle, dual optical path detection measurement technology, and is independently developed as a new generation of fully automatic online water quality monitoring instrument. The CODcr water quality online analyzer can quickly, accurately, simply, and economically measure the COD concentration in various water qualities, meeting the technical requirements of national automatic analyzers for surface water.

Developed for pollution sources and surface water, this instrument complies with the national standard Technical Requirements and Test Methods for Automatic On-line Ammonia Nitrogen Monitors for Water Quality (HJ 101-2019) as well as HJ353, HJ354, HJ355 and HJ212. It can accurately, rapidly, economically and eco-friendly determine ammonia nitrogen content in water, and is widely used for wastewater monitoring in environmental protection, water conservancy, chemical industry, municipal engineering and other fields.

Specially designed for pollution sources, this instrument adopts the Water Quality — Determination of Total Phosphorus — Ammonium Molybdate Spectrophotometry (GB11893-89) to ensure accurate and valid test results. It fully complies with HJ/T102-2003, HJ353-2019, HJ354-2019, HJ355-2019 and other standards and has obtained the China Environmental Protection Product Certification.

The PhotoTek 6000 Total Nitrogen Automatic Water Quality Analyzer is a new-generation fully automatic online monitor independently developed by our company with the integration of advanced domestic and international instrument manufacturing technologies. It can rapidly, accurately, conveniently and cost-effectively measure total nitrogen concentration in water, and meets the technical requirements for national automatic analyzers for surface water.

The PhotoTek 6000 automatic on-line nitrate nitrogen monitor is a new intelligent water quality monitoring product launched by LARSUN. Adopting the national standard Water Quality — Determination of Nitrate Nitrogen — UV Spectrophotometry (HJ/T346-2007), it can rapidly, accurately and economically detect nitrate nitrogen in industrial sewage, municipal sewage and partial surface water based on the photochemical properties of nitrate.

The PhotoTek 6000 Total Arsenic Online Water Quality Analyzer is a new-generation independently developed product by our company. It integrates advanced domestic and international instrument manufacturing technologies, adopts the national standard method Water quality — Determination of trace arsenic — Potassium borohydride-silver nitrate spectrophotometry as the testing principle, and is equipped with dual optical path detection technology.

The PhotoTek 6000 Total Copper Automatic Online Water Quality Monitor uses bathocuproine spectrophotometry. Its test results are consistent with Water quality — Determination of copper — 2,9-Dimethyl-1,10-phenanthroline spectrophotometry (GB 7478-87). It also conforms to the Guangdong Provincial Local Standard Technical requirements for automatic online copper monitors (DB44/T 1719-2015), ensuring the accuracy and validity of monitoring data.

The PhotoTek 6000 Total Cadmium Automatic Online Water Quality Monitor adopts cadion spectrophotometry. Its test results are consistent with the national standard Water quality — Determination of cadmium — Dithizone spectrophotometry (GB 7471-87). The instrument also complies with Technical requirements and test methods for automatic online monitor of cadmium in water (HJ 763-2015), which guarantees the accuracy and validity of monitoring data. It has obtained the China Environmental Protection Product Certification issued by CEPREI Certification Center (Beijing).

The PhotoTek 6000 Total Lead Automatic Online Monitor adopts porphyrin spectrophotometry, with a new high-sensitivity porphyrin used as the chromogenic reagent. Its test results are consistent with the national standard Water quality — Determination of lead — Dithizone spectrophotometry (GB 7470-1987). It also meets the requirements for Type I lead detection specified in Technical requirements and test methods for automatic online monitor of lead in water (HJ 762-2015). The instrument guarantees accurate and valid monitoring data and has been awarded the China Environmental Protection Product Certification by CEPREI Certification Center (Beijing).

This automatic online total mercury water quality monitor is innovatively developed based on laboratory methodologies. It adopts cold vapor atomic absorption method, free from interference by colority and turbidity, and delivers reliable monitoring results.

The PhotoTek 6000 Hexavalent Chromium Automatic Online Water Quality Monitor is a new-generation fully automatic online monitor independently developed by our company. It incorporates advanced domestic and international instrument manufacturing technologies, complies with the industrial standard HJ 609-2011 Technical Requirements for Automatic Online Monitors of Hexavalent Chromium in Water, and adopts the national standard Diphenylcarbazide Spectrophotometry as its detection principle, equipped with dual optical path detection technology. This instrument can rapidly, accurately, conveniently and cost-effectively measure the concentration of hexavalent chromium in water.

This on-line automatic analyzer can continuously detect, analyze, read, store and upload residual chlorine data in industrial sewage, municipal sewage and partial surface water. It features low reagent consumption, suitability for long-term on-line monitoring, simple structure, easy maintenance, long maintenance intervals, accurate test results and excellent stability.

This fully automatic on-line toxicity testing system is developed based on luminescent bacteria comprehensive toxicity detection technology. It uses marine luminescent bacteria as biosensors and realizes automatic sampling and dilution to achieve 24-hour on-line monitoring of environmental water samples. It occupies 40% of the domestic market and has been applied in more than 100 water source early warning monitoring sites, complying with GB/T 15441-1995, ISO 11348-3 and other standards.

The MINI6000 small multi-parameter automatic on-line water quality monitoring station integrates water intake, water pre-treatment, multi-parameter monitoring, data acquisition and data reporting into one unit. It requires no dedicated housing, features low cost, attractive appearance and convenient relocation. Equipped with rainproof, lightning-proof, dust-proof, anti-theft, low/high temperature resistance, automatic operation and wireless communication functions, it has high integration, complete functions, small footprint, short construction period, simple operation and long maintenance intervals.

Complying with GB/T 15441-1995 and ISO11348-3, this portable biological toxicity tester is a high-tech product with fully independent intellectual property rights developed domestically. It can detect thousands of potential toxic substances with high precision and has been applied in many major water quality safety emergency incidents.