عدد المساهمات : 106 نقاط : 318 تاريخ التسجيل : 16/01/2012
موضوع: pH test الأربعاء مايو 23, 2012 11:09 pm
The pH scale ranges from 0 to 14 (Figure 15.10). Pure water is pH 7 (neutral). Surface water ranges from about 6.5 to 8.5. Most organisms in an aquatic ecosystem function best when the water pH is about 7. Many life processes do not function well when pH is too high or low. For example, fish have trouble reproducing when the pH of their water environment is too low (acidic).
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