| Item No. | Description | Assay | Volume |
| RTO.WAH01.008 | Ultra High Range (UHR) | 200-15000 mg/L | 150 pieces/box |
| RTO.WAH01.006 | High Range (HR) | 20-1500 mg/L | 150 pieces/box |
| RTO.WAH01.002 | Ultra Low Range (ULR) | 0.7-40 mg/L | 150 pieces/box |
| RTO.WAH01.004 | Low Range (LR) | 3-150 mg/L | 150 pieces/box |















