Set of 12 Experimental Bottles (Serial No. xx) Back Catalog number: 450010 Availability: In the manufacturer's stock Price on request - + Recommended 438310 Hand Net acc. to Böttger, mesh size 500microns Price on request 438652 Spare Net Part for Stream Bottom Sampler Price on request 438133-021 Net bag Midi - protective net 300µ Price on request