Visibility Disc acc. to Secchi, dia. 30cm,10m stee Back Catalog number: 443593 Availability: In the manufacturer's stock Price on request - + Recommended 5070C-25 Copper Wire 25m Price on request 450020 Set of 10 Spare Fluorescent Tubes for ICES Incubat Price on request 5070D-10 10m cable. PTFE coated stainless steel Price on request