Specifications
| Measurement range | 0 to 300 ppb |
| resolution | 1 ppb |
| Accuracy | +/- 2 ppb +/- 4% of the reading |
| Light source | LED @525nm |
| Automatic shutdown | No operation after ten minutes |
| Measuring method | Refer to ATSM, D 1687-92, diphenylcarbazide method |
| optional reagents | HI749-25 |
| calibration group | HI749-11 |
Packing list
machine X1, manual X1, certificate X1, warranty card X1
After-sales instructions
Warranty days: 365 days
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;
[Note] For after-sales services outside the Chinese mainland, if the instrument requires repair, the shipping and possible associated taxes shall be borne by the sender. Generation address of the manual: http://en.nbchao.com/p/45612/Specification.html , which is only used by users who purchase commodities from the NBCHAO.