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.
1 Cilantro/Coriander grows well in a pH level range of 6.0 to 8.0, although it performs best in the middle of this range. 2  For best results with organic cilantro, rototill or spade in 2 or 3 inches of composted organic matter or manure into the top 6 inches of your garden soil. It takes about 30 to 40 days from planting to harvesting cilantro for itâs leaves; you can harvest a 2nd picking in 10 to 14 days after that. 2  For coriander seeds, itâs about 40 to 50 days until harvest.