Claycourt master Rafa Nadal passed his first real test of this year's French Open with a 7-6(4) 6-4 6-1 victory against Italian rising star Jannik Sinner as his quest for a record-breaking 13th title ...

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 Trump administration reversed guidance Friday on COVID-19 testing for a second time, urging those exposed to people with the virus to get tested even if they are not displaying symptoms.

The compact P45000 high voltage transducer is designed for measurements of high DC voltages up to 3,900 V DC and AC voltages ...