Sample Preparation.

QUANTACHROME NOVA4200e Made in USA.

Properly weigh the sample into the sample cell. Insert the filled sample cell bulb into the heating mantle. Place the clamp around the mantle so that the sample cell is held firm. Insert the sample cell stem into the sample preparation station. Tighten the knurled ring by turning it clockwise to secure the sample cell in the preparation station. After the sample cell(s) secured in the preparation station, initiate out gassing by entering the control panel menu on the instrument, set the outgassing temperature to 2500c and instruct the system to start degassing for 3hr and switch on the heater. When the sample has out gassed for 3hour’s turn off the heating mantle, Allow the heating mantle and the sample cell cool. Once the heating mantle has cooled, unload the out gas station and remove the samples. Reweigh the sample cell to determine the post out gas sample weight. Sample Analysis

Fill dewar to the internal upper mark with liquid nitrogen, place the sample cell containing an out gassed and weighed sample into the analysis station to be used for analysis! Complete all the fields/selections on the start analysis ‘’Sample’’ menu. Also complete point selection and tagging on the start Analysis ‘’Points’’ menu! Complete fields on the start Analysis ‘’Equilibrium’’ menu! Field defaults can be used for BET measurements! When all fields are completed on the start Analysis Menu, Click ‘’Start’’ to begin the analysis.