EXPRESSION OF RESULTS.

Express the quality of the odor by a descriptive epithet like the

following, which may be abbreviated in the record:

a—aromatic

C—free chlorine

d—disagreeable

e—earthy

f—fishy

g—grassy

m—moldy

M—musty

P—peaty

s—sweetish

S—hydrogen sulfide

v—vegetable.

Express the intensity of the odor by a numeral prefixed to the term

expressing quality, which may be defined as follows:

Numerical Term. Definition.

value.

Standard methods for the examination of water and sewage · 第 26 / 249 题