Aijiren syringe filter membrane use method introduction: before inhaling the sample, suck about 1ml of air into the syringe, so as to minimize the liquid residue, suck the sample into the syringe, invert the syringe and clear all the residues on the top Clean, connect the needle filter to the syringe, tighten it gently to ensure a good seal, filter the sample in the syringe and inject it into the sample bottle, and then follow the steps to Maximice la tasa de recuperación, retire el filtro y chupe el aire en la jeringa, vuelva a conectar el cabezal del filtro y expulse todas las muestras residuales.