AASHTO T 200-79 pdf free download

PH of Aqueous Solutions with the Glass Electrode

1.1 This test approach specifies the equipment and approaches for the electrometric measurement of ph values of aqueous solutions with the glass electrode. it does not address the way wherein the solutions are organized. ph measurements of appropriate precision can be made in aqueous answers containing high concentrations of electrolytes or water-soluble organic compounds, or each. it have to be understood, but, that ph measurements in such answers are handiest a semiquantitative indication of hydrogen ion concentration or activity. the measured ph will yield an accurate result for these quantities most effective while the composition of the medium matches approximately that of the standard reference solutions. in trendy, this check approach will no longer give an correct degree of hydrogen ion pastime unless the ph lies among 2 and 12 and the concentration of neither electrolytes nor nonelectrolytes exceeds 0..1

1.2 This general does 110t purport to deal with all of the safety concerns, if any, related with its use. it is the obligation of the person of this widespread to establish appropriate protection and fitness practices and determine the applicability of regulatory obstacles earlier to apply.

AASHTO T 200-79 pdf free download

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