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| Product Name | TongAo TR 6900N Desktop STIP-scan | TongAo TR 6900CN Desktop STIP-scan |
| Product Price | $2913.00 | $3591.00 |
| Details | Details | |
| Model comparison | ||
| Type | Single parameter | Multiparameter |
| Style | desktop | desktop |
| Detection Principle | Photometric | Photometric |
| Measurement parameters | TN | COD TN |
| Range | Wide Range | Wide Range |
| Accuracy | ±5%FS | ±5%FS |
| Resolution | ||
| Data Output | USB | USB |
| IP Rating | ||
| Parameter comparison | ||
| Measurement parameter | Total nitrogen | COD, Total nitrogen |
| Measurement Range | 0~250mg/L | |
| Measuring method | Persulfate oxidation | |
| detection lower limit | 0.5mg/L | |
| Digestion environment | 125℃，30min | |
| measurement error | ≤±5％ | ≤±5% |
| Repeatability | ≤±5% | ≤±5% |
| Optical inspection Stability | ≤ +/- 0.001A/20min (100,000 hours life) | ≤ +/- 0.001A/20min (100,000 hours life) |
| data storage | 30,000 records (including item, date, time, sample ID, etc.) | 30,000 records (including item, date, time, sample ID, etc.) |
| Linear dispersion quantity | 96 Linear dispersion (expandable) | 96 Linear dispersion (expandable) |
| printer | Built-in thermal printer | Built-in thermal printer |
| display screen | 5-Inch high-definition color LCD screen | 5-Inch high-definition color LCD screen |
| batch Volume | 16/25 water samples/batch | 16/25 water samples/batch |
| Colorimetric method | Digestion Colorimetric tube | Digestion Colorimetric tube |
| sample compatibility | 16Mm (round), 25mm (round) | 16Mm (round), 25mm (round) |
| communication interface | USB cable, LAN, etc | USB cable, LAN, etc |
| exception notification | Blank comparison prompt, over-Range prompt, etc | Blank comparison prompt, over-Range prompt, etc |
| operation interface | Membrane push-button operation, Chinese/English (optional) | Membrane push-button operation, Chinese/English (optional) |
| Power supply | AC(220V±10%)，50Hz | AC(220V±10%)，50Hz |
| power | 5W | 5W |
| Protection Rating | IP30 | IP30 |
| Environment humidity | ≤ 85% non-condensing | ≤ 85% non-condensing |
| Environment temperature | 5~40℃ | 5~40℃ |
| Dimension | 348*250*145mm | 348*250*145mm |
| instrument weight | Main unit less than 2.6kg | Main unit less than 2.6kg |
