| Measurement parameters | Nitrate |
| range | 0.4~62200ppm |
| Shell material | Epoxy resin |
| Cable length | 1 meter |
| Connector | BNC |
1. For product quality problems caused by non-human products of instruments and equipment, the manufacturer will provide free warranty services during the warranty period;
2. There is no warranty period for fragile and consumable parts, and if you find product quality problems after receiving the goods, please apply for return and exchange within 7 days, and you will not wait for the overdue ones;