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The use of acidosis for a low pH creates an ambiguity in its meaning. The difference is important where a patient has factors causing both acidosis and alkalosis, wherein the relative severity of both determines whether the result is a high, low, or normal pH. [citation needed] Alkalemia occurs at a pH over 7.45.
Water drawn directly from a stream, lake, or aquifer and that has no treatment will be of uncertain quality in terms of potability. [3] The burden of polluted drinking water disproportionally effects under-represented and vulnerable populations. [11]
The result can be detected with high levels of lactate and low levels of bicarbonate. This is usually considered the result of illness but also results from strenuous exercise. The effect on pH is moderated by the presence of respiratory compensation. Lactic acidosis is usually the result of tissue hypoxia which is not the same as arterial hypoxia.
Metabolic acidosis results in a reduced serum pH that is due to metabolic and not respiratory dysfunction. Typically the serum bicarbonate concentration will be <22 mEq/L, below the normal range of 22 to 29 mEq/L, the standard base will be more negative than -2 (base deficit) and the pCO 2 will be reduced as a result of hyperventilation in an ...
The low-end test equipment is dominated by few large suppliers, notably Germany's Loviband and Merck, DelAgua & ITS Europe Water Testing of the UK who work globally, and US-based LaMotte. Major manufacturers of in-line equipment include Siemens and Danaher's Hach. Thermo Scientific and Waters are key producers of high-end test equipment. [38]
To ensure consistency and repeatability, the methods use in the chemical analysis of water samples are often agreed and published at a national or state level. By convention these are often referred to as "Blue book". [4] [5] Certain analyses are performed in-field (e.g. pH, specific conductance) while others involve sampling and laboratory ...