The shipments, in fact, contained heroin, chemical tests determined.
Most olive-oil frauds are easy to detect using chemical tests.
"And it only does chemical tests, not taste tests," she adds.
They succeeded so well that their spurious product responded to the appropriate chemical tests and deceived the government chemists.
These are physical and chemical tests, including blood, urine, and spinal-fluid analyses.
Subsequent chemical tests confirmed that Tutankhamun's body was burnt while sealed inside his coffin.
Some chemical tests, however, require the removal of more ancient material than is desirable.
As the cells continued to change their type, they matured into cells that appeared, by all the chemical tests that Dr. Black applied, to be nerve cells.
Certifying an echinacea supplement, for instance, requires a battery of chemical tests that measure the presence or absence of particular phenols, alkylamides, and acids.
But the response of Thames Valley police, which has carried out a series of radioactive and chemical tests, suggests that nothing can be ruled out.
But other scholars expressed impatience that even more diagnostic chemical tests by new technologies have not been applied to the map's ink.
