Prepares analytical standards in canisters or Tedlar™ bags by blending 1-5 cylinders together with a diluent gas under mass flow control. The flow stream first passes through a blending region to insure complete homogeneity before sampling into the canister or bag. The diluter can be given several minutes to reach equilibrium under the current temperatures, pressures and flows before the stream is partially diverted into the storage receptacle. The remainder is vented out of a 35psig back pressure regulator which maintains a constant pressure in the manifold whether or not canister filling is occurring. Obtaining the required concentration at the outlet is done by setting up the method in the Windows™ user interface and then down-loading to the 4600A through the SmartLabII™ control network.

The 4600A comes equipped with 2 mass flow controllers, one for diluent flow control (5000 sccm) and a second for a single standard cylinder (50 sccm). Additional flow controllers can be ordered for channels 3-6 which will increase the number of cylinders being blended to 5. All MFC's have Kel-F seals to reduce impurities introduced into the flow path. The extra channels can be ordered with MFCs ranging from 10 to 1000 sccm