Our Premium Edible Inks are manufactured in the United States meeting FDA guidelines and regulations and our own high-quality standards. Certainly they can also be used without a printer as food colorants. However, if you use them for your printer please make sure to order the correct ones as the formulars differ to guarantee best printing results in your Canon or Epson printer. To protect the ink as good as possible in its packaging and in order to maintain the high quality they come in opaque bottles. ALL EDIBLE INKS IN THIS CATEGORY ARE FOR THE USE WITH EPSON PRINTERS ONLY! DO NOT USE WITH A PRINTER OTHER THAN EPSON!