Analytical instruments

Process analyzers

Environmental/Process analyzers

Process Analyzers

pH Meter ORP Meter
Transmitter for Industrial pH/ORP Analyzer
Panel Mount pH/ORP Analyaer
Exchangeable Tip pH Electrode
Immersion Type pH/ORP Detector
Flow-Through Type pH/ORP Detector
pH Sensor for Pure Water Measurement
Immersion Type pH/ORP Detector with Some Cleaners
pH Meter with Auto-Calibration/Chemical Cleaner
Intrinsically Safe Explosion-Proof Type Transmitter for Industrial pH/ORP Analyzer
pH Sensor for Bio-Process Applications
Conductivity Analyzer
Transmitter for Industrial Conductivity Analyzer
Panel Type Conductivity Analyzer
Conductivity Detectors with Amplifier
Industrial Conductivity Detector
Intrinsically Safe Conductivity Transmitter
Resistivity Analyzer
Panel Type Resistivity Analyzer for Ultra-Pure Water
Electromagnetic Conductivity Analyzer
Transmitter for Electromagnetic Conductivity Analyzer
Panel Type Electromagnetic Conductivity/Concentration Analyzer
Electromagnetic Conductivity Detector
Dissolved Oxygen Analyzer
Panel Type DO Analyzer
Immersion/Drop-in Type DO Holder/Detector with Water Jet Cleaner
Transmitter for Industrial Low-Concentration DO Analyzer
Intrinsically Safe Explosion-Proof Type DO Transmitter
Automatic Process Analyzer
SDI Analyzer

Analyzers for Water & Waste Water Treatment

Automatic Water Quality Analyzer for City Water
Residual Chlorine Analyzer
Reagentless Free Chlorine Analyzer
Chloride Demand Analyzer
Colorimeter/Turbidity Meter
Turbidity Analyzer
Suspended Solids Concentration Analyzer
Alkalinity Analyzer
Sand Filter

Analyzers for Boiler Water Applications

Boiler Sampling System
Hydrazine Transmitter

Analyzers for Oil Refineries

Boiling Point Analyzer
Flash Point Analyzer
Pour Point Analyzer
Cold Filter Plugging Point Analyzer
Cloud Point Analyzer
Vapor Pressure Analyzer
Process Sulfur Content Analyzer
Process Colorimeter
Explosion-Proof Type Cooler

EOL products

Process Analyzers
Analyzers for Water & Waste Water Treatment
Analyzers for Boiler Water Applications
Analyzers for Oil Refineries

Product Information

Process Analyzers - Others

SDI Analyzer

SDI Analyzer
SDI-12(For Pure water), SDI-22(For Sea water)

SDI Analyzer SDI-12(For Pure water), SDI-22(For Sea water)


  • This uses a unique method where a high-accuracy flowmeter is used instead of a measuring cup to measure how clogged the filter is.
  • The filter uses a round filter paper that is as hard to break as that for manual analysis.
  • The filter paper cartridges can hold 80 pieces of paper, facilitating the feed of filter paper.

Meas. range

0 to 6.66 SDI (15 min) 0 to 20.0 SDI (5 min), determined by setting the time during which water passes through filter paper (5 min, 15min)