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Metered Reagent Dispensing System

IP.com Disclosure Number: IPCOM000084653D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Bonilla, JO: AUTHOR [+4]

Abstract

The purpose of the system shown in Fig. 1 is to precisely dispense a predetermined quantity of chemical reagent or other liquid from one of a series of reagent bottles 10 into a test tube 11. The system comprises a metering pump 12 connected to a water supply 13 and to a selector valve 14. Control circuitry 15 causes pump 12 to deliver the predetermined quantity of liquid to valve 14, and a circuitry further causes valve 14 to deliver such liquid to the desired one of bottles 10. Each bottle is connected by a hose to a nozzle 16 that directs the liquid into a test tube 11 positioned beneath it.

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Metered Reagent Dispensing System

The purpose of the system shown in Fig. 1 is to precisely dispense a predetermined quantity of chemical reagent or other liquid from one of a series of reagent bottles 10 into a test tube 11. The system comprises a metering pump 12 connected to a water supply 13 and to a selector valve 14. Control circuitry 15 causes pump 12 to deliver the predetermined quantity of liquid to valve 14, and a circuitry further causes valve 14 to deliver such liquid to the desired one of bottles 10. Each bottle is connected by a hose to a nozzle 16 that directs the liquid into a test tube 11 positioned beneath it.

As shown in Fig. 2, each bottle 10 comprises a cup-shaped outer shell 18 on which is screwed a cap 19. A plastic liner 20 is disposed in the bottle 10 and is held in place by a seal ring 21 that also seals the space between cap 19 and container 18, so that the liner 20 divides the interior of the bottle 10 into an inner and outer chamber. The inner chamber is filled with a reagent 22. The outer chamber is filled with water 23. Cap 19 has an inlet 24 connected by a hose to the selector valve 14 so that as water 23 is admitted to the outer chamber it flows into bottle 10 and forces reagent 22 out of an outlet 25.

The system is relatively safe. The bulk of the system contains water and only a small part contains chemicals. The system is entirely hydraulic and completely closed, thus reducing the danger of any vapors developing in half-full co...