Sechang Instruments Blog

Industrial Measurement Guides & Technical Insights

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Field Water Quality Testing: Portable Instruments, Rapid Test Kits, and Field QC Protocols EN

WAK pack tests and DR6000 spectrophotometry for field water quality: rapid test kits for residual chlorine, COD, and heavy metals.

수질측정 검사키트 WAK DR6000
Jul 21, 2026 · 1,483 words

Industrial Gas Detection: Sensor Technologies, Confined Space Safety, and Emissions Monitoring EN

Industrial gas detection guide: VOC, H2S, LEL, O2 sensors, PID-based VOC meter selection, and confined-space safety monitoring.

대기측정 가스 VOC 분진 안전
Jul 21, 2026 · 1,368 words

Colorimeter and Spectrophotometer Guide: Principles, Selection, and Industrial Applications EN

Colorimetry and spectrophotometry for industrial water analysis: instrument selection, measurement principles, calibration, and key applications.

색도계 색도측정기 분광광도계 수질측정 색도기준
Jul 21, 2026 · 1,089 words

ORP Meter Guide: Oxidation-Reduction Potential Measurement, Electrode Selection, and Industrial Applications EN

ORP (Oxidation-Reduction Potential) measurement guide: electrode technology, calibration standards, disinfection and wastewater BNR process control.

water-quality electrochemical process-control
Jul 21, 2026 · 2,824 words

TOC Analyzer Guide: Total Organic Carbon Measurement Methods, Instrument Selection, and Industrial Applications EN

TOC (Total Organic Carbon) analyzer guide: combustion vs UV-persulfate methods, online monitoring, TOC vs COD correlation, and instrument selection.

water-quality laboratory pharmaceutical process-control
Jul 21, 2026 · 2,280 words

Ion Selective Electrode (ISE) Guide: Fluoride, Nitrate, Ammonium, and Heavy Metal Measurement in Water EN

Ion Selective Electrode (ISE) guide: fluoride, nitrate, ammonium, and heavy metal measurement in water — membrane types, TISAB preparation, and calibration.

water-quality electrochemical laboratory
Jul 21, 2026 · 2,421 words

Turbidity Measurement Guide: NTU, Optical Sensors, and Applications in Drinking Water and Wastewater EN

Turbidity measurement guide: NTU vs FNU, nephelometric vs transmitted-light methods, formazin calibration, and instrument selection for water applications.

Jul 21, 2026 · 1,827 words

Electromagnetic Flow Meter Guide: Faraday Principle, Electrode and Liner Selection, and Industrial Applications EN

Electromagnetic flow meter guide: Faraday induction principle, electrode and liner selection for corrosive fluids, and installation requirements.

Jul 21, 2026 · 1,626 words

Ultrasonic Flow Meter Guide: Transit-Time vs. Doppler, Clamp-On Installation, and Industrial Applications EN

Ultrasonic flow meter guide: transit-time and Doppler principles, clamp-on vs insertion installation, and comparison with electromagnetic flow meters.

Jul 21, 2026 · 1,526 words

Arsenic in Water: Field Test Kits vs. ICP-MS — When to Use Which EN

Arsenic in drinking water above 0.01 mg/L: portable field test kits vs laboratory ICP-MS, with a cost comparison and two-step screening workflow.

water-quality heavy-metals arsenic field-testing environmental-compliance
Jul 21, 2026 · 1,158 words

SS and MLSS Measurement Guide: Sensors, Calibration, and Process Control for Wastewater Treatment EN

SS and MLSS measurement principles, sensor comparison, and field installation guide for wastewater treatment operators.

수질측정 SS MLSS 하폐수처리 센서
Jul 21, 2026 · 1,322 words

Ecotoxicity Testing: Microtox, Daphnia, and Algae Bioassays for Industrial Effluent Monitoring EN

Ecotoxicity testing principles, Korean regulations, and Microtox instrument comparison — a guide to managing industrial effluent ecotoxicity.

수질측정 생태독성 Microtox 환경규제
Jul 21, 2026 · 1,214 words