Posted Under: Glossary
Formaldehyde solution, Fixing agent ,usually the 10 percent solution is used in Biology
Commercially available formalin solution is usually a 37 % or 40 % (weight / volume) solution. Its better to take this full strength solution to the field to reduce volume and to dilute it before use; For diluting the full strength solution is treated as 100 %, which means that for production of a 10 % solution one part of 40 % formalin solution must be mixed with 9 parts water. Formalin solution is usually acidic (pH 3 to 4.6).
In Parasitology , its hot form-around 70 centigrade – is usually used for Fixation of Cestodes
Its also used for Fixing the Tissues samples for pathology
Sometimes its better to use Buffered Formalin