The broth in this contains Phenol Red, a pH indicator. A pH below 6.4 will turn the Phenol Red to Yellow. During fermentation, acids are produced that lower pH. You CAN have one result without the other, or both as the same result (Gas and Fermentation).
A compound modifier is a sequence of modifiers of a noun that function as a single unit. It consists of two or more words (adjectives, gerunds, or nouns) of which the left-hand component modifies the right-hand one, as in the dark-green dress: dark modifies the green that modifies dress.ompound verbs composed of a noun and verb are comparatively rare, and the noun is generally not the direct object of the verb. In English, compounds such as *bread-bake or *car-drive do not exist. Yet, we find literal action words, such as breastfeed, and washing instructions on clothing as for example hand wash.
A single adjective made up of two or more words is called a compound adjective. The words in a compound adjective can be linked together by a hyphen (or hyphens) to show they are part of the same adjective.In the UK, your readers will expect you to use hyphens in compound adjectives.he words in a compound adjective are linked together by a hyphen (or hyphens) to show that they are part of the same adjective. For example (compound adjectives shaded): Read more about compound adjectives.