well uhh one is made out of aluminam tin foil and the other is made out of a Thanksgiving plate
Friedrich Raschig was born on 1863-06-08.
Friedrich Ratzel died in 1904.
Pall Rings - Plastic PERFORMANCE CHARACTERISTICS OF THERMOPLASTIC PALL RINGSAn advance on the Raschig Ring, the Pall Ring has similar cylindrical dimensions but has two rows of punched out holes, with fingers or webs turned into the centre of the cylinder, which significantly increases the performance of the packing, in terms of throughput, efficiency and pressure drop.ApplicationGas scrubbing of Cl2, So2, No2,HCl De-aerationLiquid extractionNingbo T.C.I Co., ltdwww.rubbersealing.comis maninly manufacturer for Pall ring, Tellerette, Saddle ring, heilex ring, nutter ring, mini ring, VsP ring,liquid distributor, bubble cap tray, tower packing and tower internals.