26 Jul 3 in 1 Spectrum Transmission Meter Tester VL BL UV400 Blue Violet Light test
It can test the blue light transmittance of 430nm, visible light transmittance of 380nm-760nm and purple light transmission values of 395nm. Three display interfaces can be selected: visible light/blue light/purple light transmittance +UV400, visible light/blue light transmittance+UV400, visible light/blue light/purple light transmittance....