. . . "SDN:L22::TOOL0989" . . "0.5-m net" . "0.5-m net"@en . "Half-metre ring net"@en . "accepted"@en . "Plankton net described as 0.5-m ring net; designed with single circular (ring) mouth piece with measurements: mouth diameter (metre)=0.5; with opening area (square metre)=0.2; with total filtering net length (metre)=not specified; with filtering net shape conical; with additional features: can be used for qualitative sampling or the capture of live animals or quantitative sampling if used with flowmeter; with mesh size (millimetre)=0.2 to 0.5 but may vary; and equipped with NO closing mechanism."@en . . . . .