Lux meter is a device extensively used for measuring luminous flux for various radiation processes. Its commercial use is large and therefore, companies directly contact the manufacturers for such equipment. However, these devices are also available on various websites. One can make a great online deal after judging the quality of the product and the seller well. Hioki is one of the online retailers that is actively selling these devices and many other measurement equipment.
One can also ask for some advice from experts and make a visit to some nearby stores that sell these devices. Being sure about the guarantee and warranty of the product is necessary while buying.