The pH is important for all processes of life and also in industry.
The casein from milk is precipitated when the pH is under 7 (in this case the critical pH is 4,60; lemon juice is acidic.
Many plants are tolerant of wide ranges of pH but many are very specific in their pH requirements. A good example is the blueberry which will only grow in a pH below 5.
The pH scale is usually stated as between zero and 14 (although negative pH is sometimes included and thus the scale is extended to -1 to 14) Typical pH's ; battery acid is around zero, household bleach 13, water 7, blood 7.3, urine 6, seawater 8, vinegar 3
pH=6,4
pH indicator works as the range by alkalinity wether it's basic or acidic. Indicator properties are often found naturally in plants (eg. litmus). pH indicators are often just refined versions of various natural plant chemicals or synthesized versions of them.
batman
Three things are: *Temperature *pH *substrate concentration
critical parameters are silica,tds, ph, po4,na+,alkanity
The pH of blood is 5.
Buffers "slow" changes in pH (they make it difficult to change pH), and for animals a constant pH (internally) is critical to survival. (A change in pH of 1 - in either direction - will kill you.)
its 12 and sometimes over.
The casein from milk is precipitated when the pH is under 7 (in this case the critical pH is 4,60; lemon juice is acidic.
The pH of the mouth is very variable; sometimes 5,5-6,0. however, on an average basis, it is 7, or neutral.
Sometimes it can damage plant growth
Many plants are tolerant of wide ranges of pH but many are very specific in their pH requirements. A good example is the blueberry which will only grow in a pH below 5.
Fram Ph-13, or anything that crosses, fom another brand. Sometimes with headers, the Ph-13 is too lng, so, the shorter version is the Ph-30.
I am not sure why you connect blood and urine pH. The pH of blood is critical to bodily finction/life, urine is a waste product. The pH of urine varies widely from mildly acid to mildly alkaline.