pH measurement. Chemist using a pH meter during quality control tests on chemicals. The pH of a solution is a measure of the amount of free hydrogen ions present. This indicates acidity and alkalinity. The more free ions present, the more acidic the solution is said to be.
| px | px | dpi | = | cm | x | cm | = | MB |
Details
Creative#:
TOP10235228
Source:
達志影像
Authorization Type:
RM
Release Information:
須由TPG 完整授權
Model Release:
N/A
Property Release:
N/A
Right to Privacy:
No
Same folder images:
Loading