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Multiple solute standard preparation

  • US 5,544,684 A
  • Filed: 12/08/1994
  • Issued: 08/13/1996
  • Est. Priority Date: 12/08/1994
  • Status: Expired due to Fees
First Claim
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1. A method for the preparation of a standard solution containing at least a first solute and a second solute dissolved in a solvent, the solution containing an essentially desired concentration of the first solute and a substantially desired concentration of the second solute, comprising the steps of:

  • (a) weigh a container to determine the tare weight of the container;

    (b) assign a target weight for the solvent;

    (c) assign a target weight for the first solute;

    (d) assign a target weight for the second solute;

    (e) add the first solute to the container;

    (f) weigh the container to determine the weight of the first solute added to the container;

    (g) determine the ratio of the weight of the first solute added to the container to the target weight for the first solute;

    (h) multiply the target weight for the second solute by the ratio of step (g) to obtain an updated target weight for the second solute;

    (i) add the second solute to the container;

    (j) weigh the container to determine the weight of the second solute added to the container; and

    (k) add a weight of the solvent to the container, the weight of the solvent being essentially equal to the quantity of the weight of step (f) divided by the weight of step (c) which quantity is then multiplied by the weight of step (b).

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