Sentence examples for using a natural rock from inspiring English sources

By using a natural rock standard, this test was a measure of observable matrix effects during the isotope measurement by SIMS.

Ciceri studied potassium-bearing feldspar obtained from syenite, a natural rock.

Use a natural sequence.

They use a natural fermenter.

Use a natural antiseptic.

Use a natural smile.

Use a natural toner.

Use a natural sunscreen.

Use a natural predator.

Use a natural eye wash.

Use a natural lip plumper.