High-precision measurement of pH in the full toothpaste using NMR chemical shift.
Journal of Magnetic Resonance（2020）
Abstract
•Method that precisely and consistently measures pH of undiluted toothpaste was developed.•Method used the chemical shift of ingredient present in toothpaste as a pH read-out.•Method enables quality control for toothpaste products.•Method is applicable to any other gel/paste product.
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Key words
Magnetic Resonance Spectroscopy,Toothpastes,Methods,Hydrogen-ion concentration,Arginine,Sodium bicarbonate,Chemical shift
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