The MN8 uses conductive earbud inserts and reference sensors designed for comfort, durability, and high-quality EEG signal capture. These components are made from an ABS copolymer doped with carbon powder, and each sensor is coated with a special baked-on, non-polarisable layer. This coating ensures stable conductivity but can gradually wear down over time, especially with heavy use or abrasive cleaning.

To keep your MN8 performing optimally, it’s important to maintain clean sensors—especially because ears naturally produce wax and collect moisture and grime. Below is the best-practice cleaning guide based on EMOTIV’s internal testing and real-world experience during data collection.

Routine Cleaning Between Participants

For general hygiene and regular multi-user usage:

• Use medical-grade isopropyl alcohol wipes (IPA).

• Gently wipe the conductive earbuds and reference sensors.

• Avoid scrubbing too hard—light pressure is enough to disinfect without wearing down the coating.

• This method has been tested extensively and does not damage the headset when done correctly.
  
  
  

Recommended: 70% isopropyl alcohol wipes

Avoid: abrasive cloths, vigorous rubbing, or harsh chemicals

Deeper Cleaning: Soap & Water Method

If the sensors have visible buildup such as wax or skin oils:

• Prepare a bowl of mild soapy water (a gentle dish soap works well).

• Add a small amount of standard disinfectant if additional hygiene is required.

• Detach the earbud inserts (if applicable) and soak them briefly.|

• Rinse thoroughly with clean water to remove any soapy residue.

• Allow to air dry gently—avoid forced heat or direct sunlight.

This method is safe and effective for periodic deeper cleaning.

Heavy-Duty Cleaning: Ultrasonic Bath (Optional)

For sensors that are heavily gunked up or used in long sessions:

• You may use a standard ultrasonic cleaner (the type used for jewelry or dental appliances).

• After ultrasonic cleaning, wash with mild soapy water, rinse with clean water, and air dry completely before use.

Ultrasonic cleaning helps remove wax or debris trapped in small crevices without damaging the coating when performed properly.

What to Avoid

To maintain the longevity of the conductive coating, avoid:

• Strong solvents (acetone, industrial cleaners)

• Scraping or using sharp objects

• Prolonged soaking in alcohol

• Excessive mechanical rubbing

• Hot air dryers or heat guns

Keeping the MN8 sensors clean ensures optimal conductivity, reliable EEG data, and long-term comfort for all user.