Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Extech DO703 Membrane Caps (3 caps). Replacement Membrane Caps. Compatible with DO700 - 9-in-1 Portable Dissolved Oxygen Meter.