Eureka
Solinst Eureka EasyProbe
Cost-effective multiparameter water quality sonde in two versions: EasyProbe20 measures temperature, dissolved oxygen, conductivity and pH/ORP, and EasyProbe30 adds turbidity.

Part no.: EBP-Li-30
External battery pack, 76 mm in diameter, with a rechargeable lithium-ion battery so the probe can log on its own. A stainless steel eyebolt on top serves as a hanger.
Prices are given in the quote we send you.
Source: the manufacturer's specification.
Eureka
Cost-effective multiparameter water quality sonde in two versions: EasyProbe20 measures temperature, dissolved oxygen, conductivity and pH/ORP, and EasyProbe30 adds turbidity.
Eureka
Part no.: Manta+20
Portable yet rugged multiprobe with temperature, pH, conductivity and optical DO, with ORP and depth as options. Fits in a backpack and suits spot checks and profiling.
Eureka
Part no.: Manta+30A
Multiprobe with wipered turbidity, temperature, pH, conductivity and optical DO. Light enough for spot checks and profiling, tough enough for extended deployments.