{"product_id":"qtx-4w-135mm-uv-mini-tube-f4-t5-blb-black-light","title":"QTX 4W 135mm UV Mini Tube F4 T5 BLB - Black Light","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe QTX 4W UV mini tube is a 135mm compact black light source in the F4 T5 BLB format, designed for handheld currency checkers, portable inspection units and small-scale UV applications where space is limited. The tube measures 135mm long by 16mm diameter and emits ultraviolet radiation at 365nm with an output of 80µW\/cm².\u003c\/p\u003e\n\u003cp\u003eDesigned for installation in mini fluorescent fittings with T5 sockets, the tube suits battery-powered handheld devices used for counterfeit note detection, forensic inspection of documents and ID cards, and mineral or fluid trace detection in maintenance work. The compact form factor allows manufacturers and installers to build UV inspection tools into spaces where full-size tubes cannot fit, including portable pest control lamps and small benchtop curing stations.\u003c\/p\u003e\n\u003cp\u003eThe F4 T5 BLB designation indicates this is a 4-watt tube using a T5 (16mm diameter) envelope with a black light blue phosphor coating that filters visible light while allowing 365nm UV emission. The 135mm tube length includes the metal end caps with bi-pin contacts, so the actual glass envelope is approximately 120mm. The tube operates on low-voltage ballasts typically found in mini fluorescent systems running on mains or battery power.\u003c\/p\u003e\n\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e16mmØ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltraviolet wavelength\u003c\/td\u003e\n\u003ctd\u003e365µm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUltraviolet output\u003c\/td\u003e\n\u003ctd\u003e80µW\/cm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e135mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRating\u003c\/td\u003e\n\u003ctd\u003e4W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eF4T5 BLB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is this tube used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 4W UV mini tube is primarily used in handheld currency checkers and portable inspection devices where compact UV illumination is needed to reveal security features on banknotes, passports, ID cards and documents. It also suits small pest control lamps and benchtop curing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does F4 T5 BLB mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eF4 indicates a 4-watt fluorescent tube, T5 refers to the 16mm diameter (5\/8 inch in traditional tube sizing), and BLB stands for black light blue, a phosphor coating that filters visible light while allowing 365nm ultraviolet emission.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat fittings does it work with?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe tube requires a mini fluorescent fitting with bi-pin T5 sockets spaced 135mm apart and a compatible low-voltage ballast. It cannot be used in standard household light fittings or directly on mains voltage without the correct ballast circuit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long does the tube last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTypical lifespan for F4 T5 BLB tubes is 2,000-5,000 hours depending on operating conditions and duty cycle. UV output degrades gradually over the tube's life, so replacement is recommended when inspection performance drops noticeably even if the tube still glows.\u003c\/p\u003e","brand":"AVSL","offers":[{"title":"Default Title","offer_id":45313042612491,"sku":"106.038UK","price":1.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/106038UK_CO1_c0cd503b-83ec-4f33-b021-ebb912670dfa.jpg?v=1715187217","url":"https:\/\/niori.co.uk\/products\/qtx-4w-135mm-uv-mini-tube-f4-t5-blb-black-light","provider":"Niori","version":"1.0","type":"link"}