3m ppm 2500

Hi Karen.

Thanks for the tips…Where do you get the 3M PPM 2500? We did not
like the PNP Blue for the complex Inca designs we wanted to try.
Would you mind emailing us the whole protocol? Thanks

George and Elizabeth
moche@msn.com

Hi Karen, I’m not always happy with the results of PNP for detail.
Would you please tell me what PPM 2500 is and where I can get it.I
looked on the 3M website but could not locate PPM.
Thanks, Dolores