Writing on black plastic frames?

[Adrian Quiney WI]

I am on my second year using Mann Lake black plastic frames and would like to keep track of the age of the comb. What are people finding that works? Thanks, Adrian.

[peacekeeperapiaries]

A white or yellow paint pen, found at hobby stores will work fine, or a queen marking pen from the bee supply companies in a white or light color.

[tnmx]

I use a black marker and put it on top of the frame. The frames that were drawn last year just put an 09 on top very simple and easy to ID.

[Joseph Clemens]

Sharpie makes their indelible markers in many colors, but for marking on black, I prefer silver.

[Dale Hodges]

White grease pencil

[Ravenseye]

Lumber marking crayon.