Calibration is one of the most critical steps in the pH measurement process. Some of the common calibration-related problems include out-of-range slope values and cell constants, inaccurate readings ...

The federal government shutdown has entered its second week, and already shortages of air traffic controllers have strained operations and disrupted flights at some U.S. airports.

" [Dead spots] usually occur due to distance from a Wi-Fi router, obstructions from walls and furniture, interference from other electronic devices, poor router placement or a combination of all these ...