I ordered two blacklight (UVA) insect killer tubes from this company's web site. These were clearly listed as the Sylvania brand. I chose this brand as they provide a detailed specification for the tubes' spectral performance (https://www.sylvania-lighting.com/product/en-mea/products/0000091/). Without asking if I agreed to a change: this company then supplied Philips tubes. There is probably nothing wrong with Philips tubes (a well-known name), but they were not what I was led to believe I was buying. As I needed tubes immediately, it would have been more of a nuisance to return them for refund; however, I now find myself having bought something I would not have chosen.