The BLB T5 4W fluorescent tube is a professional-grade ultraviolet (UV-A) light source designed for precision detection and fluorescence excitation applications.
As a low-power yet highly efficient UV-A lamp, the BLB T5 4W is widely used in laboratories, financial institutions, industrial inspection systems, and entertainment lighting environments. Its compact size and stable output make it especially suitable for portable detection devices and desktop-level inspection tools.
The BLB T5 4W fluorescent tube is produced according to international T5 standards, ensuring compatibility and reliable performance across various lighting systems.
Key specifications are as follows:
Dimension | Φ16*135mm |
Item | BLB T5 4W |
Wattage | 4W |
Powder | 365nm |
Wavelength | G5 |
Voltage | 110V/220V 50/60Hz |
Lumen Flux | 120lm |
CCT | Backlight Bule |
Warranty | 1year |
Life Time | 8000hrs |
Ballast | without |
MOQ | 1000pcs |
Packing | 500 pcs / brown master carton |
Packing Size | 47.5*17.5*39.5cm |
The BLB T5 4W fluorescent tube operates based on mercury vapor discharge and phosphor conversion technology. When the lamp is energized, it first generates short-wave ultraviolet radiation at approximately 254nm inside the tube. The internal phosphor coating then converts this energy into long-wave UV-A radiation centered at 365nm.
The outer blue-black glass plays a critical role by filtering out most visible light, allowing only targeted UV-A wavelengths to pass through. As a result, the lamp emits a faint dark-purple glow while effectively exciting fluorescent materials in the environment.
This precise spectral control is one of the key reasons why BLB UV tubes are widely used in professional detection systems.
The BLB T5 4W UV-A lamp offers several performance advantages compared to conventional lighting sources:
The blue-black filter glass significantly reduces unwanted visible light, ensuring clean UV output. This improves contrast during fluorescence inspection and minimizes background interference.
Operating in the long-wave UV-A range (365nm), the lamp provides relatively safer UV exposure compared to UV-B or UV-C sources, making it suitable for controlled indoor environments.
High-quality phosphor coating ensures stable wavelength output and consistent brightness throughout the lamp’s service life.
With only 4W power consumption, the BLB T5 4W is highly energy-efficient and ideal for portable or small-scale equipment.
Designed with durable electrodes and high-grade materials, the lamp supports an average lifespan of up to 8,000 hours under standard operating conditions.
The BLB T5 4W fluorescent tube is widely used across multiple industries due to its reliable UV-A output and compact design.
One of the most common applications is currency and document verification. The lamp can reveal fluorescent security marks in banknotes, passports, credit cards, and official certificates, helping detect counterfeit items quickly and efficiently.
Consumers and quality control laboratories use BLB UV lamps to detect fluorescent whitening agents in cosmetics, skincare products, baby care items, and textiles. This helps ensure product safety and compliance with regulations.
In manufacturing and maintenance industries, the BLB T5 4W is used with fluorescent dyes to detect cracks, leaks, and surface defects that are invisible under normal lighting conditions. It is also applied in mineral analysis and material verification processes.
UV-A fluorescence is used to identify contamination, decay spots on fruits, and unwanted residues in food processing environments. It also supports forensic and environmental monitoring tasks.
The BLB T5 4W UV lamp creates dramatic fluorescent effects in nightclubs, theaters, concerts, and themed entertainment venues. White and fluorescent-colored materials glow vividly under UV-A light, enhancing visual impact and atmosphere.
The BLB T5 4W fluorescent tube is the entry-level model in the BLB series, designed for close-range and small-area detection applications.
When installing the lamp, users should ensure compatibility with:
● G5 bi-pin lamp holders
● Suitable electronic ballast or UV-compatible ballast systems
● Proper ventilation to maintain stable operation
For larger applications, higher wattage options (such as 6W, 8W, 15W, or T8 variants) are available to cover broader detection areas.
The BLB series is engineered for flexibility, allowing users to select different power levels depending on their inspection distance, workspace size, and application requirements.
As a professional BLB T5 4W fluorescent tube factory, we adhere to strict production and quality control standards to ensure that every lamp meets industrial-grade requirements.
Our manufacturing advantages include:
1. Strict wavelength calibration to ensure stable 365nm peak output
2. High-purity phosphor materials for efficient UV conversion
3. Durable cobalt-doped blue-black glass for superior filtering performance
4. Rigorous electrical and safety testing before shipment
5. Stable electrode structure to extend operational lifespan
Each BLB T5 4W lamp is tested to ensure consistent performance and reliability for professional applications.
We provide comprehensive after-sales support for all BLB T5 4W fluorescent tube products. If customers encounter any technical issues or product concerns, our support team responds within 24 hours with professional solutions.
Our commitment is to deliver stable quality, reliable supply, and long-term partnership support for global customers in industrial, commercial, and scientific sectors.
Materials: Quartz Glass 
