Determine turbidity or degree of visibility in natural waters with this weighted 20 cm diameter disk.
| Part Number | Model |
| LA-0171 | Black & White |
| LA-0171-CL | Black & White Quadrants & Calibrated Line |
Determine turbidity or degree of visibility in natural waters with this weighted 20 cm diameter disk.
| Part Number | Model |
| LA-0171 | Black & White |
| LA-0171-CL | Black & White Quadrants & Calibrated Line |