In moderate amounts it is not generally considered an adulterant.
In this bulletin they do not classify saltpeter as an adulterant.
It was then in demand, it is said, as an adulterant of quinine.
It is often added to, as an adulterant, or substituted for the true Almond oil.
The roots of this, after being ground and roasted, are used either as a substitute or an adulterant of coffee.
This oil, which has what is generally termed a "tea-rose odour," is occasionally used as an adulterant for otto of rose.
The Fireweed is cultivated as an ornamental plant in England, where the leaves are also used as an adulterant of tea.
Almond meal is sometimes used as an adulterant in ipecacuanha powder.
The froth produced by shaking an infusion of senega keeps much longer than that produced by an infusion of the adulterant.
Sugar, previously dyed with magenta, is sometimes used as an adulterant of crystallised magenta.