What are the application scenarios of xenon light transfer Windows?

Xenon light transfer Windows, with their ultraviolet disinfection function and basic air tightness, are mainly applied in scenarios where there is a clear demand for disinfection but relatively low requirements for airflow control. The following are its core application scenarios and specific explanations:
I. Laboratory Scene
General Microbiology Laboratory (BSL-1/2 level)
Scene requirements: It is used for the transfer of experimental equipment (such as petri dishes, and pipettes), reagent bottles, etc. During the transfer process, surface microorganisms (such as bacteria, and fungi) need to be killed to prevent the spread of contamination.
Features:
The ultraviolet disinfection time is usually set at 15-30 minutes, meeting the disinfection requirements for the transfer of low-risk samples in GB 19489 "General Requirements for Laboratory Biosafety".
It can be equipped with mechanical interlocking double doors to prevent direct flow of air from the inside and outside, but there is no need for strict pressure difference control (maintaining only a slight pressure difference of ±5Pa).
Typical cases: Sample transfer in university research laboratories and hospital clinical laboratories.
2. Chemistry Laboratory (Non-flammable and non-explosive scenarios)
Application: Transferring glassware that requires surface disinfection (such as beakers and measuring cylinders), or transferring experimental raw materials from non-clean areas to fume hoods.
Notes:
Prohibited for the transfer of flammable and explosive items (ultraviolet irradiation may cause reactions).
Light-blocking chemicals (such as silver nitrate solution) should be wrapped in light-blocking containers before being transferred.
Ii. Pharmaceutical and Medical Device Industry
1. Non-sterile production process
Scene:
Outer packaging material pretreatment area → Clean workshop: Transfer outer packaging materials such as cartons and labels, and kill microorganisms adhering to surface dust (such as mold spores).
General storage area → Weighing room: Transfer raw and auxiliary material packaging bags to reduce the introduction of dust into the clean area.
The standard complies with: It meets the disinfection requirements for non-sterile drug production environments stipulated in the "Good Manufacturing Practice for Pharmaceutical Products" (GMP) and is commonly used in oral solid dosage form workshops.
2. Medical device clean area transfer
Application: For the transfer of cleaned but not sterilized medical devices (such as surgical knives and suture needles) to the initial packaging stage, ultraviolet disinfection is used as a pretreatment step before sterilization.
Advantages: Compared with chemical disinfection, it is more environmentally friendly, has no residue risk, and is suitable for instruments sensitive to moisture and heat (such as electronic endoscope accessories).
Iii. Food and Cosmetics Industry
Baking and confectionery production lines
Scene:
Raw material temporary storage area → Clean production line: Transfer dry raw materials such as flour and icing, and kill possible eggs of insects and microorganisms (such as Salmonella).
Packaging workshop → Finished product warehouse: Transfer packaged pastries (such as biscuits, and chocolates) to prevent mold growth during storage.
Features:
The ultraviolet wavelength selected is 254nm (UV-C), which can destroy the DNA of microorganisms and complies with GB 14881 "General Hygiene Practice for Food Production".
The inner walls need to be cleaned regularly to prevent food residues from adhering to the ultraviolet lamp tubes and affecting the disinfection efficiency.
2. Cosmetics filling workshop
Application: Transfer soft tubes, bottle bodies, and other packaging materials. After disinfection, they enter the aseptic filling stage to prevent microbial contamination of skin care products (such as lotions and essences).
Note: Avoid direct exposure to UV-sensitive components (such as vitamin C-like raw materials), and they should be transferred indirectly through a transfer container.
Iv. Electronics and Semiconductor Industry
1. Transfer of basic items in the clean workshop
Scene:
Changing room → 1000-level clean area: Transfer work uniforms, gloves, tweezers, and other consumables to reduce the dust particles brought in by personnel.
Storage area →SMT assembly line: Transmits electronic components (such as resistors and capacitors) to prevent surface dust from affecting the quality of soldering.
Function extension:
Some models are equipped with ion fans, which can simultaneously eliminate static electricity on the surface of items (it is necessary to confirm whether they are compatible with ultraviolet lamps).
It is only applicable to scenarios with cleanliness levels of Class 10000 (ISO 8) and below. For the production of high-precision chips, it needs to be upgraded to an airtight transfer window.
V. Storage and Transportation of Biological Samples
Primary disinfection of the biobank
Application: From the sample collection area to the low-temperature storage area, blood samples, tissue sections, etc. are transferred. Ultraviolet disinfection serves as the first barrier for biosafety, reducing the risk of cross-contamination between samples.
Limitation:
Do not use for direct exposure to liquid nitrogen cryopreservation tubes (which may cause the tube body to become brittle). It should be wrapped in a sterilized bag before transfer.
High-risk samples (such as HIV and the novel coronavirus strain) must be operated in a biosafety cabinet and cannot rely solely on xenon light transfer Windows.
2. Temporary transfer by mobile inspection vehicles
During the epidemic, the vehicle-mounted testing laboratory received throat swab sampling tubes through xenon light transfer Windows, quickly disinfected them, and sent them to the testing area, improving the on-site testing efficiency.
Advantages: Compact structure (volume usually ≤0.5m³), easy to install in vehicles, and supports emergency power supply.
Vi. Other scenarios
Auxiliary rooms of clean operating rooms in hospitals
Application: Sterilized gauze and instrument kits are transferred from the dressing preparation room to the operating room. Ultraviolet irradiation is used as a secondary confirmation disinfection to reduce the risk of surgical infection.
Note: It should be used in combination with high-temperature sterilization (such as high-pressure steam), and ultraviolet is only used for surface supplementary disinfection.
2. Pet medical care and animal room
Scene: Deliver pet medicines and surgical instruments to the treatment area to kill possible zoonotic pathogens (such as Toxoplasma gondii cysts).
Equipment requirements: Anti-scratch and anti-biting materials (such as thickened 304 stainless steel panels) should be selected to prevent damage from animal impacts.
Application limitations and alternative solutions
Not applicable scenarios:
High-level biosafety laboratory (BSL-3/4): High air tightness + negative pressure control is required. Airtight transfer Windows must be used in combination with VHP sterilization.
Flammable and explosive environments: Ultraviolet rays may cause gas explosions (such as in ethanol evaporation environments), and pure mechanical seal transfer Windows need to be used instead.
Precision instruments sensitive to ultraviolet rays, such as optical lenses and fluorescently labeled samples, need to be disinfected by light-blocking transfer or chemical fumigation.
Upgrade direction: If the current scenario has an increased requirement for air tightness, a differential pressure monitoring module can be installed (with a cost increase of approximately 20%), but it cannot meet the leakage rate standard of the airtight transfer window (≤1m³/h · m²), and is only suitable for temporary needs.
From the above scenarios, it can be seen that the core value of xenon light transfer Windows lies in achieving basic disinfection and dust prevention at a low cost, making them suitable as "entry-level" transfer devices in clean environments. However, it is necessary to assess whether they meet regulatory requirements based on specific risk levels.