Dear all,

I want to visualize DI water or aqueous methanol solution flow in
micro channels formed by silicon-glass bonding. The channel cross
section is around 100umX100um.

Can anyone recommend me a dye that can visualize the micro fluids but
can be easily cleaned away without contaminating the channels after
usage.

I prefer white light source, but fluorescent dye is also a choice if I
have to. Thank you very much!

Best Regards,
Orlando