Laboratory test. Female scientist testing the pH of a clear liquid in a beaker.

---

Size: 3937px × 4950px
Photo credit: © TON KINSBERGEN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -life, 125v, 15a, 21st, 3, 3-pin, 5-15, 60hz, ac, alternating, america, american, canadian, central, century, connector, , current, design, domestic, earth, electrical, electrics, engineering, equipment, ground, hot, life, live, mains, mexico, nema, neutral, north, pin, pins, plug, standard, standards, studio, technological, technology, type, usa, wire, wiring