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| Brand | Rikagaku |
|---|---|
| Origin | Japan |
| Model | CL-203N |
| Measurement Principle | Potentiometric ion-selective electrode (ISE) with Ag/AgCl-based chloride-specific sensing membrane |
| Application Domain | On-site and lab-based chloride quantification in fresh concrete mixtures, fine aggregates, wash water, and aqueous extracts per JIS A 1154, ASTM C114, and ISO 9557 |
| Temperature Compensation | Automatic (0–50 °C), NTC thermistor integrated in CLD-11 electrode |
| Display | Dual-line LCD — 4-digit resolution for chloride/salinity (% or kg/m³), 3-digit for temperature (°C) |
| Range | Salinity: 0.001–1.000 % (10–10,000 mg/L Cl⁻) |
| Chloride content | 0.001–1.999 kg/m³ (calculated from salinity × unit water volume W) |
| Electrode potential | −1000 to +1000 mV |
| Temperature | 0–50 °C |
| Resolution | 0.001 % salinity (10 mg/L), 1 mV, 0.1 °C |
| Repeatability | ±2 % of reading (salinity), ±0.5 °C (temperature) |
| Calibration | Two-point using certified NaCl standard solutions (0.01 % and 0.5 % w/v) |
| Memory | 30 measurement records with timestamp and temperature stamp |
| Housing Dimensions | 70 × 40 × 173 mm (W × H × D) |
| Weight | 290 g (main unit), 130 g (CLD-11 electrode with 1 m cable) |
| Compliance | Designed for GLP-aligned field testing |
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