The PFA lined stainless steel sampling valve is installed above the Teflon glove box by a sealed
connection. The Teflon glove box is equipped with a window door that can be quickly opened and closed in the operation direction, and a nitrogen inlet and outlet is set in the rear. After connecting the nitrogen gas source, the inside of the box and the space in the sampling bottle are cleaned. After the bottle body is intalled stably, carefully press the top operation handle to make the medium flow into the sampling botte gently and controlled. When suficient medium is obtained, release the top press operating handle to make sure that the sampling process is stopped safely. The sampling bottle can be safely removed from the valve body by wearing acid and alkali resistant rubber gloves, and the sampling bottle cap can be insalled. The space can be cleaned again by nitrogen to further protect the operators. Finally, the sampling bottle can be taken out from the Teflon glove box to complete the process sampling.