Visibility Disc acc. to Secchi, 3m steel rope, ma Back Catalog number: 443590 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 439011 Temperature Sensor -2 to + 32°C, max. depth 6.000 Price on request 438116-IN Electronic Flow Meter for MultiNet Price on request 439015 Analog Channel incl. calibration for AMT oxygen an Price on request