Before Collecting Samples
Identify and cut a cotyledon from your plant. Place the cotyledon between the plastic cover and filter paper.
Close the plastic cover and place on a solid surface.
Use a coin or blunt object to crush your sample through the plastic film. Continue until the leaf soaks fluid completely through both sides of the filter paper, leaving a dark green spot the size of your fingernail.
Remove leaf remnants leaving behind only what was absorbed by the paper.
Place sample inside the envelope then clean your tools, including the object used to crush your sample
Please do not seal the envelopes. Simply close the flap and use rubber bands to group batches of envelopes when you're done.
WANT ACCESS TO SPECIAL CONTENT?
Sign-up for announcements and discounts., like free shipping.