Can you tell if anodes are zinc or aluminum?

viper1216

Chief Petty Officer
Joined
Jul 31, 2013
Messages
420
I replaced my anodes last year when I did my impeller. I honestly don't know if I bought aluminum or Zinc. It was a package designed for the alpha 1 gen 2 and came as a kit. I feel like the package said it was for brackish water. I will be storing the boat in salt water this year, so obviously need to make sure they are zinc, but they are still in like new condition, so would rather not replace if I do not have to.Is there any way I can tell by looking at them what material they are?
 

dingbat

Supreme Mariner
Joined
Nov 20, 2001
Messages
16,322
White discoloration on anode used in brackish = zinc. Aluminum stays pretty clean
 

shrew

Lieutenant
Joined
Dec 29, 2006
Messages
1,309
Weight. Zinc feels heavy for its size. Aluminum feels light for its size.
 

crazy charlie

Vice Admiral
Joined
May 22, 2003
Messages
5,581
Ditto.....the weight will tell you which is which.Probably cant tell by just looking at them.Charlie
 
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