Police last night seized items used to manufacture "Nazi" methyl amphetamine from a car in Perth's south.
Traffic police stopped a silver ute about 6pm after it pulled into a Champion Drive chemist car park erratically.
Det. Sgt. Scott Johnson from the organised crime squad said police searched the vehicle after officers allegedly saw suspicious-looking jars of liquid on the back seat.
"What we have found in the car is everything needed to manufacture methyl amphetamine," he said.
Det Sgt Johnson said the "Nazi" method, also known as the Birch reduction, is used to make about 95 per cent of methylamphetamine in WA.
It is a popular but highly dangerous method of producing the illicit substance because it uses mainly improvised equipment such as coke bottles, jerry cans and plastic tubing and other common items.
The cooking method includes highly unstable materials such as ammonia gas and liquid LNG, he said.
A man and a women from Camillo are expected to face charges of attempting to manufacture prohibited drugs, Det. Sgt. Johnson said.
The 32-year-old man was driving the car while the 47-year-old woman, believed his de facto partner, attended the scene later.