I just got that 532nm.. wow, that is bright. Apparently, the peak wavelength of human optical detection is 555nm, and the far end is 780, so that explains why this green laser appears very bright, while the 780nm which has 4x the power, is not particularly bright.

I noticed the absorbance shift, of lysergol in 50:50 methanol:water, using a 405nm (appears as 445 on the detector) laser pointer, and this 532nm laser module (I still need to measure this one). The former fluoresces the solution as mint green, maybe 480-ish nm. The 532nm laser fluoresces the solution as a reddish-orange, maybe 650+