Calcium Colorimeter Checker
Marine PH checker
Have only used 3 times - $40
Marine PH checker
I bought this a while ago and don't need anymore. Probably used it twice.
Marine PH Checker - $49.95 on Marine Depot
HI780-11 Saltwater pH Checker Calibration Check Set (still sealed) - Hanna Instruments - $13.00 on Marine Depot
Take it all for $40
Pickup or meet at a LFS within metro area or Long Island NY