2. Acids
H+ ions dissolved
Corrosive to
metals
Sour taste
pH less than 7
Bases
OH- ions dissolved
Soapy or slippery
Bitter taste
pH greater than 7
3. PH SCALE-
• measure if acid, base or neutral
• 0 up to 7: acid
• 7: neutral
• Above 7 to 14: base
4.
5. A change in one pH unit is 10X as acidic or
basic
pH of 2 is 10X more acidic than a pH of 3
pH of 2 is 100X more acidic than a pH of 4
6. When pH is too low fish egg development
is impaired and increases the amount of
dissolved metals which can become
toxic.
When pH is too high the water can dissolve
organic materials including skin and
scales.
7. Drinking water pH between 6.5 and 8.5
Most fish tolerate range between 5 to 9
