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ph
has definitions from the field of chemistry
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[ noun ] (chemistry) p(otential of) H(ydrogen); the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure of the acidity or alkalinity of a solution (where 7 is neutral and <7 is acidic and >7 is basic)
Synonyms Used in print (M. Yokoyama et al., "Chemical and serological...)Fahey and Morrison used a single , continuous gradient at constant pH for the fractionation of anti - A and anti - B agglutinins from preisolated � g-globulin samples . This buffer , pH 8.6 , was 0.005 M in * * f and 0.039 M in tris ( hydroxymethyl ) - aminomethane ( Tris ) . Each initially contained 1700 ml of buffer ; in the sphere was starting buffer and in the cone was final buffer , 0.50 M in both * * f and Tris , pH 4.1 . Paper_electrophoresis was carried_out on the concentrated samples in a Spinco model R cell using barbital buffer , pH 8.6 , ionic strength 0.075 , at room_temperature on Whatman 3 MM filter_paper . Fractions from the column which were to be subjected to analytical ultracentrifugation were concentrated by negative pressure dialysis and dialyzed for 16 hr in the cold against at_least 500 volumes of phosphate buffered saline , pH 7.2 , ionic strength 0.154 . Related terms hydrogen_ion_concentration acidity alkalinity neutrality chemistry |
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