Get Isokinetic Calculations quickly and conveniently right on your smart phone. No more need for a Nomograph, laptop, or special calculator to quickly assess new conditions. Method 5 Calculator App* Find Ideal Nozzle Size* Calculate K Factor * Determine Ideal Delta H * English or Metric Units* Always available on your phone* Android OS 2.1 and later Developed with the same quality and reliability you expect from Environmental Supply Co. Inc EPA Method 5, ASTM D3685, ISO 9096