WARNING: For testing carts correctly, please view this instruction carefully in advance 

• Cartridges and mouthpiece preparation: Ensure the cartridges and mouthpiece are clean and free from contaminants *Remove the mouthpiece and set it aside in a safe location during the filling process.
• Distillate preparation: *If you're not adding Oil, heat the distillate gently,  just enough to ease the filling process,ensuring it bellow 122°F(50°C). *Choose high quality,food grade oil. *Determine the desired ratio, typically between 1-5% of the total solution,a balanced start would be around 2-3%. *After gently heating the distillate,integrate the oil,ensuring a consistent mix using a stirrer.
• Filling the Cartridges: *Utilize a syringe or filling gun,ensuring the needle's diameter is 1.6mm or less. *Carefully fill between the glass wall and the center post,avoiding the introduction of distilate into the center post. COMMON MISTAKE: *Overfilling the cartridge can lead to malfunctions or leakage.Aim for a consistent fill without going beyond the cartridge's capacity.
• Securing the mouthpiece: *Reattach the mouthpiece to the cartridge within  1-2 minutes of filling. *Ensure the mouthpiece is firmly in place but not overtightened. COMMON   MISTAKE: *Incorrectly threading or loosely attaching the mouthpiece can result in leaks or airflow complications.
• Post-filling protocol: *Turn the filled cartridge upside-down for 30 minutes. *Afterward,revert to its upright position for an additional 30 minutes.This ensures an even distribution and proper coil saturation.
• Storage and care: *For optimal longevity,store filled cartridges upright in a controlled environment,ideally between 68°F(20°C)and 77°F(25°C). *Treat cartridges with care to prevent any damage or unnecessary stress. Attention: Viscosity Issues:An inconsistent mixture,especially when adding oil,can alter the viscosity leading  to  potential leaks. Ensure thorough mixing. Environmental concerns:Avoid exposing the cartridges to high temperatures,as this can make the distillate too runny,increasing leak risks.