| parts per million |
a ratio figure that represents the amount of one substance that is in one million parts of another substance; commonly used to describe the relative concentrations of nutrient solutions.
출처: www.growingedge.com/basics/glossary.html
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| parts per million |
a unit of measurement (for dissolved oxygen) equal to a mg/l.
출처: www.catskillcenter.org/programs/csp/H20/glossary1....
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| parts per million |
A measurement used to calculate the "parts per million" or "pounds per million pounds" of the chlorine, hardness, and alkalinity in your pool water. PH - The total of acid or alkaline particles in the water. The recommended ideal range is pH 7.2 to 7.6. PHENOL RED - An indicator reagent used with your test kit to determine the pH of pool water.
출처: www.httg.com/spa_glossary.htm
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| parts per million |
One part per million corresponds to one minute in two years or a single penny in $10,000.
출처: www.astoria.or.us/water/definitions.html
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| parts per million |
Constituents in water are often measured in very small units. Many of the dissolved minerals such as sodium and calcium are monitored by Tucson Water are measured in terms of parts per million (or milligrams per liter). To help you visualize how very small this unit is, we offer the following illustrations.
출처: www.ci.tucson.az.us/water/terms_and_definitions.ht...
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