Surcharge for mesh size < 55µ for nets 438 030, 43 Back Catalog number: 438061 Manufacturer: HYDRO-BIOS Availability: In the manufacturer's stock Price on request - + Recommended 438025 Spare Net Bucket for Plankton Nets No. 438 001 / 4 Price on request 438020 Plankton Net for quantitative collection with cowl Price on request 435012 Counting Chamber for zooplankton,volume approx. 70 Price on request