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| Brand | Kyoritsu |
|---|---|
| Origin | Japan |
| Model | WAK-NH4(C)-4 |
| Measurement Range | 0, 0.5, 1, 2, 5, 10, 20 mg/L NH₄⁺-N |
| Reaction Time | 10 minutes |
| Test Capacity | 50 determinations per kit |
| Instrument Type | Portable |
| Intended Use | Wastewater effluent monitoring |
| Principle | Colorimetric (Indophenol Blue Method) |
| Compliance | Designed for field-deployable screening aligned with ISO 7150-1 and EPA Method 350.1 guidelines |
| Brand | Kyoritsu |
|---|---|
| Origin | Japan |
| Model | WAK-COD-2 |
| Type | Portable Colorimetric Reagent Kit |
| Measurement Principle | Nesslerization (Ammonia) & Persulfate Digestion + UV-Vis Spectrophotometry (Total Nitrogen) |
| Measurement Range (Ammonia-N) | 0–50 mg/L |
| Measurement Range (Total Nitrogen) | 0–20 mg/L |
| pH Compatibility | 4–10 |
| Compliance | ASTM D1426, ISO 7150-1, ISO 11905-1, JIS K 0102 |
| Kit Format | Pre-filled, single-use reaction tubes with integrated calibration reference |
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