Instructions for use of high pressure filter

1、 The product is a necessary product for the leaching toxicity experiment of heavy metals and semi volatile organic compounds in soil with a flip oscillator, and is also a leaching equipment suitable for the leaching of substances in soil with a horizontal oscillator 2、 The working principle is to filter the samples with obvious initial liquid phase by means of pressure 3、 The high-pressure filter consists of base, filter body and top 4、 First, place a stainless steel support plate on the base, then a glass fiber filter membrane with a diameter of 142mm, then place the filter body on the base, align the grooves and lock it 2 Pour in the sample, align and lock the groove at the top If the high-pressure nitrogen cylinder connector is a quick connector, use transparent hard pipe to connect the cylinder with the quick connector of the high-pressure filter intake nozzle, which is very convenient and can be butted once inserted If the high-pressure nitrogen cylinder connector is Air nozzle Stainless steel air nozzle can also be installed on the air inlet of the high-pressure filter, and the white hose is used to connect the cylinder and the high-pressure filter Close the top safety relief valve, place the receiving container at the bottom, and then start to pressurize 3 Add 10 psi at first, maintain for 2 minutes when there is no liquid discharged, then add 10 psi, maintain for 2 minutes when there is no liquid discharged, and so on to add up to 50 psi accumulatively (be careful not to exceed 60 psi (1psi = 6895pa), otherwise it will cause danger) Maintain for 2 minutes until no liquid is discharged, i.e the filtration is completed 5、 Note 1 In general, it is better to choose a microporous membrane with diameter of 142mm and aperture of 0.6-0.8um for the high-pressure filter when it is used with the flip oscillator 2 When it is used with the horizontal oscillator, it is generally better to select the microporous filter membrane with the aperture of 142mm of 0.45um 3 After the use of high-pressure filter, pay attention to clean and store in a reasonable environment.