Historical text (1922). Lye (sodium or potassium hydroxide) causes severe chemical burns and blindness. Wear eye protection and gloves, add lye to water (never water to lye), and keep it away from children.

Soap-Making Manual · 1922

Plant and Machinery

Illustrations of machinery and layouts of the plant of a modern soap-making establishment.

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book

Illustration from the original book