Reply to 'pH paper trumps expensive kits in measuring acidity'
نویسندگان
چکیده
منابع مشابه
pH, SOIL ACIDITY, AND PLANT GROWTH pH, Soil Acidity, and Plant Growth
The reason for these questions lies in the fact that the pH, or degree of acidity of the soil, often is a symptom of some disorder in the chemical condition of the soil as it relates to plant nutrition. A measurement of soil acidity or alkalinity is like a doctor's measurement of a patient's temperature. It reveals that something naay be wrong but it does not tell the exact nature of the troubl...
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Several commercial radioimmunoassay kits are now marketed specifically for determination of thyrotropin (TSH) from whole-blood specimens collected on filter paper in neonatal screening programs. We have compared five kits in use in such screening programs in the United States. The reagent kits from Becton Dickinson, Neometrics, and Nuclear Medical Systems gave similar satisfactory results. That...
متن کاملWhich Ph Paper?! No
In anaesthetic practice it is occasionally necessary to make a rapid and accurate measurement of the pH of the gastric contents. A simple and convenient method is to use paper impregnated with a suitable indicator, the change in colour being read against a comparison chart provided with the paper. The purpose of this study was to compare the accuracy of interpretation of five different indicato...
متن کاملSoil Acidity and Survival of Hookworm Larvæ. A Reply to Dr. Hirst's Critical Commentary
on survival due to an unfavourably influenced development. I am in full agreement with Dr. Hirst's ideas as amplified in his critical commentary of my paper. I am sorry that Dr. Hirst misinterpreted my paper to the extent of inferring that I assumed that soil acidity exerts its main influence on the infective stage of the life history of hookworm larvae and that my whole investigation was based...
متن کاملTitratable acidity of beverages influences salivary pH recovery.
A low pH and a high titratable acidity of juices and cola-based beverages are relevant factors that contribute to dental erosion, but the relative importance of these properties to maintain salivary pH at demineralizing levels for long periods of time after drinking is unknown. In this crossover study conducted in vivo, orange juice, a cola-based soft drink, and a 10% sucrose solution (negative...
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ژورنال
عنوان ژورنال: Nature Medicine
سال: 2007
ISSN: 1078-8956,1546-170X
DOI: 10.1038/nm1107-1275b