Dec 03,2025 HEQI

General Laboratory Tips

Certain pH meter electrodes, particularly Ag/AgCl reference electrodes, may not accurately measure the pH of Tris buffers. After adjusting the pH of a Tris solution, re‑measure it after 10 minutes. If the reading differs from the initial value, contact the pH meter manufacturer for guidance.
Probe‑type ultrasonic homogenizers can cause hearing damage; always wear ear protection (earmuffs or earplugs) during operation.
Before turning off a microscope light source, reduce the brightness to its lowest setting. If the light is switched off while at high brightness, the bulb may fail the next time power is supplied.
Water added to water baths or sterilizers must be at least distilled‑grade; tap water is strictly prohibited.