Sakura Identi-Pen

Xylene-based marker for plastics

2 episodes mention this

Episodes

#2894: Dishwasher vs Marker: The Chemistry of "Permanent

Why your Sharpie fails in the dishwasher, and what actually works for plastic, fabric, and food safety.

May 17
#2791: How to Pick a Marker That Actually Stays On

Why do “permanent” markers fail on plastic? The answer is polymer chemistry, not bad luck.

May 13