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US5344392A Method and apparatus for preparation of solutions from concentrates 失效
从浓缩液制备溶液的方法和装置

Method and apparatus for preparation of solutions from concentrates
Abstract:
An apparatus for proportioning solutions from at least first and second constituent solutions connected to separate inlet ports of the apparatus first detects which constituent solution is being supplied to which port and then properly proportions the finished solution from the constituent solutions irrespective of which constituent solution is connected to which inlet port.
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