Is it formalin or saline

From:David Grehan <>

Have you ever been asked if a specimen has been placed in formalin or
saline but you are reluctant to have a sniff and blast your mucous
Here is a simple test ;
Add  few drops of the fluid to 1 ml of your reticulin silver solution.
If it turns white the fluid is saline.
If it turns black you have got formalin .


David Grehan

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