For that reason you need to put your National Drug Code (NDC) into a Universal Product Code (UPC) barcode in the United States. A UPC-A barcode symbol contains a GS1 GTIN-12 data structure. Here is what you need to do to convert your NDC into a GS1 GTIN-12:
How to Harvest Cilantro. 1  Cilantro leaves can be cut at any time during their growth period, but waiting until the plant is about 6 inches tall will give you optimum leaves.  Cut the outer leaves first, allowing the smaller leaves that are closer to the stalk to continue to grow and mature.
Cilantro makes up the stems and leaves of the plant, while the plant's seeds are ground into the spice known as coriander. Cilantro is sold in bunches like parsley. Leaves should have a bright even color and show no signs of wilting. Be sure to wash and pat dry the leaves before using.