pH Meters Direct focuses suppliers of laboratory meters and field portable meters for electrochemistry. pH meters, conductivity meters, ion meters, ORP meters, dissolved oxygen metersresistivity meters and salt meters for many water chemistry applications

Jenco Collaborative Store carries all Jenco water quality instruments, including pH meter, portable pH meter, conductivity meter, benchtop pH meter and pH tester. Accepts Paypal and all major credit cards.

Flometers.com is a leading supplier of flow meters, monitors and controllers for Fuji, Blue-White, Signet, Hedland, Sondar and Newport. We specialize in all types of meters. Flow meters, Turbine, Compu-flow, Ultrasonic, Paddle wheel sensors, controller, totalizers, transmitters, monitors, digital meters and fiber optic meters

Hanna Instruments, is a global manufacturer of water quality instrumentation and offers portable, laboratory and in-line instrumentation for testing water quality parameters.

AquaCave.com is the best place for large selection of aquarium supplies like discount fish tanks, aquarium supply, planted aquarium, aquarium supplies, saltwater fish tank, discount fish tank supplies, discount saltwater reef aquariums, Coral Reef Aquarium, Fishtank Lighting Systems, Aquarium Setup, Saltwater Aquarium Guide, Seting up Saltwater Aquarium, protein skimmers & aquarium lighting at best discount prices. Aquarium

Pulse Instruments specializing in Meters and Controls for pH, ORP, Oxidation Reduction Potential, EC, Conductivity, TDS, Level, Flow, ISE Electrodes, ISFET pH Meters, Water Treatment Instruments, Sanitizer and many others.