Grow Lights: What is a PAR Meter?
September 6, 2018
There is a lot of variation in how manufacturers measure light quality and the outputs of their lamps, as well as differences in how they determine the electricity measurements they provide. Some incorrectly use the terms PPF and PPFD interchangeably as the same measurement. You can take the science into your own hands and determine accurate measurements with a PAR quantum flux meter.
PAR meters are available with attached and remote sensors so you can measure light in different locations and over different lengths of time.