Martyr

ALLOY SELECTION:

Al premium

SALT AND BRACKISH WATER

• For use in salt and brackish water
• Not recommended for use in fresh water
• Proven to last longer than zinc due to increased capacity
• Alloy is manufactured to meet or exceed US Military Specification (MIL-DTL-24779C(SH))

Mg fresh

FRESH WATER ONLY

• ONLY for use in fresh water
• Not recommended for use in salt or brackish water
• The only alloy proven to protect your boat in fresh water!
• Manufactured to meet or exceed US Military Specification (AZ91D)

Zn traditional

SALT WATER ONLY

• For use in salt water
• Not recommended for use in fresh water
• Alloy is manufactured to meet or exceed US Military Specification (MIL-DTL-18001L)

ALLOY FAQ

Q. When should I change my anodes?
A. When they are 70% consumed.

Q. Will an aluminum anode be effective in fresh water?
A. No. Fresh water is less conductive than salt water. Therefore, magnesium anodes are your best choice as they are much more active (less noble) than zinc or aluminum anodes.

Q. Can I use zinc or magnesium anodes on my sterndrive?
A. Yes. Depending on the water type both alloys will provide excellent corrosion protection.

Q. Can I mix different types of anodes on my engine/boat?
A. No. It is not recommended to mix different alloys on the same application.

Q. Why is the US Military Specification standard important?
A. These standards were created by the US military to ensure effective corrosion protection in certain water types. Anodes that do not adhere to the US Military Specification may under protect or over protect your investment, possibly causing significant damage.