NMR methods for measuring pH in oral care, home care and personal care products

    公开(公告)号:US11892435B2

    公开(公告)日:2024-02-06

    申请号:US16703985

    申请日:2019-12-05

    CPC classification number: G01N31/221 G01N24/08 G01R33/465

    Abstract: Methods for measuring pH of gel, paste, colloid, and aqueous solutions, such as a consumer product, a food product, a pet food product, a beverage product, a pharmaceutical product, and/or a medical product, are provided. The method may include preparing a calibration curve of a chemical species including or having an acid dissociation constant. Preparing the calibration curve may include plotting a chemical shift of the chemical species relative to pH. The method may also include determining a chemical shift of a gel, paste, and colloid, aqueous solutions, such as a consumer product, a food product, a pet food product, a beverage product, a pharmaceutical product, and/or a medical product, including the chemical species. The method may further include determining the pH of the gel, paste, colloid, and aqueous solutions, such as a consumer product, a food product, a pet food product, a beverage product, a pharmaceutical product, and/or a medical product, with the chemical shift of the product and the calibration curve.

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