So they are a litmus paper for wider fertility—not a significant driver of Israeli birthrates.
Neutralise carefully to litmus paper by the successive additions of small quantities of decinormal soda solution.
Dip your litmus paper first into one, then into the other, and then back into the first.
Then add enough of the bicarbonate of soda solution till it turns the litmus paper back to blue.
"Like litmus paper under the influence of an acid," explains Guncotton.
It is therefore important to control the addition of milk of lime by the use of litmus paper.
Then drop in additions of the portion left aside, until the mixture is just acid to litmus paper.
The liquid is known to be acid by its action on litmus paper.
Mix some of the suspected soil with a little water and bury the litmus paper in the mixture.
The oxide is a green powder, readily and completely soluble in hydrochloric acid, and without action on litmus paper.
litmus paper n.
An unsized white paper impregnated with litmus and used as a pH or acid-base indicator.