The orchid seed sowing media you are using is named after a man who developed the media living in South Australia whose name is Kevin Western. He runs a company called, Western Orchid Laboratories. As you may have already presumed, Western Orchid Laboratories is an orchid seed sowing lab based in South Australia.
I'm assuming the specific type of media you're using is the W3 formulation - (the 'W' stands for Western, if you haven't guessed that already
).
I'm mentioning this 'cause I noticed you have a question mark next to the name of the media, indicating that maybe you weren't sure what it was or what it was referring too...