acid-proof

When another grazing mammal eats them, their acid-proof shell carries them safely through the stomach and into the intestines.

Parasite Rex Carl Zimmer 2009

When another grazing mammal eats them, their acid-proof shell carries them safely through the stomach and into the intestines.

Parasite Rex Carl Zimmer 2009

When another grazing mammal eats them, their acid-proof shell carries them safely through the stomach and into the intestines.

Parasite Rex Carl Zimmer 2009

Pure zinc matt glazes are soft and not acid-proof, so for dinnerware it should be used in combination with other matting agents.

12. Developing glazes 1993

After the fruit has been selected and prepared as usual by washing, stemming, and so forth, it is ready to be heated in an acid-proof kettle.

Every Step in Canning Grace Viall Gray

-- A paste formed by mixing powdered glass with a concentrated solution of silicate of soda makes an excellent acid-proof cement.

The Handy Cyclopedia of Things Worth Knowing A Manual of Ready Reference Joseph Triemens

He takes the black-and-white drawing above referred to and reproduces it, in the size desired, directly on a brass plate covered with a sensitive coating, and then having prepared it with acid-proof preparations, he passes it over to the etcher.

The Building of a Book A Series of Practical Articles Written by Experts in the Various Departments of Book Making and Distributing Various

Boil slowly for fifteen minutes in an enameled or acid-proof kettle.

Every Step in Canning Grace Viall Gray

Heat slowly in acid-proof kettle until fruit is tender.

Every Step in Canning Grace Viall Gray

Two generators sufficed, these being "nothing more than large tanks of wood, acid-proof inside, and of sufficient strength to resist the expansive action of the gas; they were provided with suitable stopcocks for regulating the admission of the gas, and with manhole covers for introducing the necessary materials."

The Dominion of the Air; the story of aerial navigation John Mackenzie Bacon 1875