$Accurately delivering very small liq. vol. from cannula - by controlled vibration fracturing liq. skin protruding below cannula outlet$

Accurately delivering very small liq. vol. from cannula - by controlled vibration fracturing liq. skin protruding below cannula outlet

Liq. to be delivered in accurate vol. within the micro-litre or ultra-monolitre range is fed by a standard piston and cylinder (1,2) along connecting box to a metering canule (4) with an open end from which protrudes the 'skin' formed by surface tension and which holds a quantity of the su...

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Bibliographische Detailangaben
1. Verfasser:	KLINGNER, EDITH, O-8019 DRESDEN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TRANSPORTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	Liq. to be delivered in accurate vol. within the micro-litre or ultra-monolitre range is fed by a standard piston and cylinder (1,2) along connecting box to a metering canule (4) with an open end from which protrudes the 'skin' formed by surface tension and which holds a quantity of the supplied liq. The skin is broken by transverse vibrations applied through a canule wall from an external vibrator (11) actuated by an electro-mechanical or piezoelectric source (10). Intensity of vibration of frequency 100 Hz to 10 kHz is adjustable by the position of a slidable clamp support for the vibrator. USE/ADVANTAGE - For clinical and other laboratories, where delivery rate must have no effect on accuracy of metered vol.