420 Magazine - View Single Post - when people refer to ppm are they referring to 500 or 700 conversion?

nocreativity · 07-05-2008, 12:12 PM

when people refer to ppm are they referring to the 500 or 700 conversion? I guess what is the general standard ---

07-05-2008, 12:12 PM	#1
nocreativity New Member Join Date: May 2008 Posts: 14	when people refer to ppm are they referring to 500 or 700 conversion? when people refer to ppm are they referring to the 500 or 700 conversion? I guess what is the general standard ---