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| Brand | Kyoritsu |
|---|---|
| Origin | Japan |
| Product Type | Imported Reagent-Based Water Quality Test Kit |
| Model | WAK-PO4(D) |
| Measurement Parameter | Orthophosphate (as PO₄³⁻) and Phosphate Phosphorus (as P) |
| Detection Range | 0.05–2 mg/L (as PO₄³⁻) |
| Reaction Time | 5 minutes |
| Test Capacity | 50 determinations per kit |
| Instrument Category | Laboratory-Use Colorimetric Test Kit |
| Measurement Principle | Ascorbic Acid-Molybdate Blue Method (Standard Spectrophotometric Color Development) |
| Brand | Kyoritsu |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | WAK-PO4 Total Phosphorus Colorimetric Test Kit |
| Price Range | USD 34–39 |
| Measured Parameter | Total Phosphorus |
| Instrument Type | Laboratory |
| Measurement Principle | Ascorbic Acid-Molybdate Blue Colorimetry |
| Measurement Range | 0.2–10 mg/L as P |
| Brand | Kyoritsu |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | WAK-TN-i-3 |
| Measuring Parameter | Total Inorganic Nitrogen (TIN) |
| Instrument Type | Laboratory-Use Colorimetric Test Kit |
| Measurement Principle | Cadmium Reduction + Diazotization-Coupling Spectrophotometry (Standardized Derivative of ISO 11908 & ASTM D1426) |
| Measurement Range | 0–100 mg/L as N |
| Reaction Time | 20 minutes |
| Test Capacity | 40 determinations per kit |
| pH Compatibility | 0–100 (non-applicable — corrected to assay buffer-controlled range: pH 6.5–7.5 during reaction) |
| Brand | Kyoritsu |
|---|---|
| Origin | Japan |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | WAK Series (e.g., WAK-NH4, WAK-NO2, WAK-NO3, WAK-TN･i) |
| Price Range | USD 36–40 per reagent pack |
| Measured Parameter | Total Nitrogen (TN), Ammonia Nitrogen (NH₄⁺-N), Nitrite Nitrogen (NO₂⁻-N), Nitrate Nitrogen (NO₃⁻-N) |
| Instrument Type | Portable Colorimetric Field Test Kit |
| Measurement Principle | Standardized Colorimetric Methods (e.g., Indophenol Blue for NH₄⁺, Diazotization for NO₂⁻, Cadmium Reduction + Diazotization for NO₃⁻, Persulfate Digestion + UV Absorption or Hydrazine Reduction for TN) |
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