System and method for quantitative analysis of a solution
AssigneeHach Company
InventorsClifford C. Hach, John G. Wasson
Life of this patent
Estimating the term…
Abstract
A system and method for quantitative analysis of a solution to determine the concentration of a chemical species in the solution. The system includes a reaction vessel; a source of at least one liquid reagent for reacting with the chemical species being tested for; a conduit leading from the reagent source to the reaction vessel; pneumatic pressure for forcing the reagent through the conduit; controls for controlling the amount of reagent added to the reaction vessel; and a detection device for detecting reaction between the reagent and the chemical species.
Claims22
A system for quantitative analysis of a solution to determine the concentration of a chemical species present in said solution, said system comprising:
- (a) a single reaction vessel;
- (b) addition means for adding said solution to said reaction vessel;
- (c) a source of liquid reagent, said reagent being capable of reacting with said chemical species in said solution;
- (d) conduit means communicating between said source of liquid reagent and said reaction vessel;
- wherein said conduit means includes a feed line which extends into said source of liquid reagent;
- (e) pneumatic pressure means comprising a source of gas at a pressure in the range of about 4 to 30 p.s.i. for applying a constant positive pneumatic pressure to said liquid reagent to force said reagent into said feed line and through said conduit means to said reaction vessel;
- (f) control means adapted to control the amount of said reagent added to said reaction vessel;
- and
- (g) detection means adapted to detect reaction between said reagent and said chemical species in said reaction vessel.
A system for quantitative analysis of a solution to determine the concentration of a chemical species present in said solution, said system comprising:
- (a) a single reaction vessel of predetermined volume;
- (b) addition means for adding said solution to said reaction vessel;
- (c) a source of liquid reagent, said reagent being capable of reacting with said chemical species in said solution;
- (d) conduit means communicating between said source of liquid reagent and said reaction vessel;
- wherein said conduit means includes a feed line which extends into said source of liquid reagent;
- (e) pneumatic pressure means comprising a source of gas at a pressure in the range of about 4 to 30 p.s.i. for applying a constant positive pneumatic pressure to said liquid reagent to force said reagent into said feed line and through said conduit means to said reaction vessel;
- (f) control means adapted to control the amount of said reagent means added to said reaction vessel;
- said control means including valve means;
- and
- (g) detection means adapted to detect reaction between said reagent and said chemical species in said reaction vessel.
A method for quantitatively determining the concentration of a chemical species in a solution, said method comprising the steps of:
- (a) adding a predetermined volume of said solution to a reaction vessel;
- (b) providing a source of reagent which is capable of reacting with said chemical species in said solution;
- (c) providing conduit means which communicates between said source of liquid reagent and said reaction vessel;
- wherein said conduit means includes a feed line which extends into said source of liquid reagent;
- (d) forcing said reagent through said conduit means to said reaction vessel by means of pneumatic pressure comprising a source of gas at a pressure in the range of about 4 to 30 p.s.i. which applies a constant positive pneumatic pressure to said liquid reagent to force said reagent into said feed line and through said conduit means;
- (e) controlling the amount of said liquid reagent added to said reaction vessel;
- and
- (f) detecting the reaction between said reagent and said chemical species.
Dependencies are inferred from the claim text.