Centered Mounting Rack for use of the PWS and Free Back Catalog number: 436380 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 436132 Standard Water Sampler acc. to Ruttner, capacity 2 Price on request 436136 set of 3 Spare Thermometers for Standard Water Sam Price on request 437200 Bottom Sampler acc. to Ekman-Birge Price on request