˙All the corrosive chemicals that are not suitable for filter paper and filter membrane are suitable for this funnel
˙When using this funnel, avoid rapid temperature changes and do not expose the funnel to flames
˙The suction pressure must be greater than 15psi
˙Filter hole gauge C, pore size is 20~35um
˙Filter hole gauge M, pore size is 10~20um
˙Filter hole gauge F, pore size is 5~10um