FIELD: mechanics.
SUBSTANCE: container (1) consists of tube (2) closed at one end and pierced with point of sample lap of needle, of membrane disk (7), of integral choking cup (3) designed to close another open end of tube (2); also membrane disk (7) adjoins internal surface of external flat even head wall (5) of choking cup (3); notably, choking cup (3) has internal collar (4) retaining and propping membrane disk (7) inserted from beneath.
EFFECT: increased reliability of sampling and keeping sample inside.
2 dwg
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