http://durgan.org/2018/February%202018/20%20February%202018%20Marijuana%20Trichome%20viewers/HTML/ 20 February 2018 Marijuana Trichome viewers
https://www.amazon.ca/Carson-60X-120X-Lighted-Pocket-Microscope/dp/B00LAX52IQ/ref=sr_1_1?ie=UTF8&qid=1519158556&sr=8-1&k Carson Micro Brite Plus 60X-120X LED Lighted Pocket Microscope
https://www.amazon.ca/Happy-Hydro-Loupe-Magnifying-Lens/dp/B01M8MDTAN/ref=as_li_ss_tl?tag=comparaboo038-20&ascsubtag=260708250-312-171411323.1517352335&SubscriptionId=AKIAJO7E5OLQ67NVPFZA Happy Hydro LED Loupe 30x & 60x Magnifying Lens
Apparently deciding the time to harvest marijuana is decided by the color of the trichomes, which are too small for detail with the naked eye. A magnifier of 30x to 60X is required. Economic viewers of this sort have a small depth of focus, which make using tedious and difficult. My improved method is to use a white background, place a sample to be viewed on top, covered with a flat plastic piece. This produces flat plane making focus easy. A glass slide would be ideal if one has access. Two types of readily available hand microscopes are shown which are 30 and 60 times magnification.
