Few things in life are as precious yet underappreciated as clean air. We take it for granted. Breathe in, breathe out—we rarely even notice the action.  Ensuring that the air we breathe is clean, fresh and safe is one of the myriad responsibilities that boards and building managers must undertake on behalf of their residents and shareholders. Fortunately, with the right expert advice and testing, the task need not be too daunting.    Read the article………………………….