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 438020 Plankton Net for quantitative collection with cowl Price on request 435016 Plankton Chamber acc. to Kolkwitz, capacity 1.0ml Price on request 435098 Set of 10 Spare Dilution Bottles 250ml Price on request