Proto Devices
SUN GLASS TESTER ( for UVA and UVB)
This portable device is battery operated (common 9 volt)
and is simple to operate.
It is small enough to be taken to a sunglass store.
The sunglass to be tested is placed in the slot
and a momenary type,push button activates the test.
If a sound is emitted, the test fails. i.e. the sunglasses are “not UV protected.”
If no sound is emitted, the sunglasses are “UV protected.”