All the parts that contact with liquid are made of 304 stainless steel, including inner tank, inner cap, condensing coil, water outlet, and water inlet.
It takes only about 4 hours to make 4L (1.06 US gal) distilled water. 50Hz 750W heating element makes distillation speed over a quarter gallon per hour, distills up to 6 gallons per day.
By vevor