Combined with a new type of diesel fuel that contains very little sulfur, the most effective filters can reduce harmful pollutants by 95 percent.

Using the goals document can be an effective filter, helping to narrow your selection of vendors.

Even folding regular cotton cloth over a few times is an effective filter.

She began her research by determining what materials would have to be added to natural carbon to make it an effective filter.

As is evident from the preceding formula, the most effective filter is obtained when the value of approaches 0.

Blagdon do claim that the foam can operate as an effective filter, and certainly theirs is far more substantial than most of the equivalent models.

The only really effective filters are the values, knowledge and judgment that your kid brings to the Web in his or her own head and heart.

A baking soda-soaked rag is believed to be an effective filter against gas.

By passing the water through an effective filter, most cholera bacteria and other pathogens are removed.

CSF is effective as a stand alone filter or can be combined with other techniques.