The HI731335N are the replacement caps that screw on the glass cuvettes used with the portable and benchtop turbidity meters. The HI731335N includes 4 caps for the for the HI731331 glass cuvettes that are supplied with the following turbidity meters:

• HI83414

• HI83749

• HI847492

• HI88703

• HI88713

• HI93414

• HI98703