seen from China
seen from China

seen from Malaysia
seen from Maldives
seen from United States
seen from China
seen from Türkiye

seen from United States
seen from China
seen from United Kingdom
seen from United States

seen from United States

seen from Malaysia

seen from Syria
seen from United States
seen from China
seen from Malaysia
seen from Germany
seen from China

seen from Malaysia
Acidifier (buffer)
The purpose of acidifier (sometimes called buffer) is to stop the development process and create an acid pH environment for the fixing agent. An acid, such as acetic acid, is the chemical used as this agent.
-Radiographic Imaging and Exposure (Terri L. Fauber)