The HI731325 are the replacement caps that screw on the glass cuvettes used with the HI93 series portable photometers and turbidity meters. Each cap has a locking indexing tab that ensures the cuvette is inserted into the meter in the same position. The caps are also used to block any light that would interfere with the optically based measurement. The HI731325 includes 4 caps.
- Locking index tab for proper alignment in the photometer
- Light blocking to prevent stray light from entering
