Advantages and Disadvantages of the Volumetric Technique

One big advantage of the volumetric technique is that it is usually less costly. As one wishes to do more sophisticated work the cost naturally goes up. 

The primary disadvantage of the technique is that it is not as suited for careful research work as the gravimetric technique. To use it in this mode, the cost advantage begins to disappear and the amount of effort required to do careful work becomes quite large, with many potential pitfalls. This is especially true for the low-pressure range of the isotherm, but it can also be true for die upper range where porosity measurements are extracted. 

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