Q1: What is the difference between a clean bench and a biological safety cabinet? Can they be used interchangeably?
A: Absolutely not! The objects they protect are completely different:
Clean Bench: Positive pressure device. Airflow blows towards the operation area after filtration, protecting the sample/product from external contamination. However, airflow eventually blows towards the operator's face, so it cannot be used for manipulating biohazardous agents, toxic chemicals, or radioactive materials.
Biological Safety Cabinet: Negative pressure device. Airflow is drawn inwards, partially exhausted after filtration. Its primary purpose is to protect the operator and environment, while also protecting samples. Used for manipulating potentially hazardous microbial samples.
Summary: If your operation is non-toxic and harmless, only fearing sample contamination, choose a clean bench; if there is biohazard risk, must choose a biological safety cabinet.
Q2: How to choose between vertical flow and horizontal flow clean benches?
A:Vertical Flow (Airflow blows from top to bottom):
Pros: Airflow passes through operation area and is sucked away via perforated plate on table or front/rear return air grilles, does not blow directly into operator's face, better comfort. Less interference for large equipment placed on table.
Applications: Most biomedicine, fine chemicals, laboratory applications.
Q3: What are the advantages of Deshengxin clean bench's core configurations?
A:Self-Produced HEPA Filters: Adopts H14 grade HEPA (filtration efficiency ≥99.995% @0.3μm) or even U15 grade ULPA, ensuring Class 100 cleanliness.
Branded Low-Noise Fans: Selects high-performance, low-noise centrifugal fans, stable operation, low vibration, long lifespan.
SUS304 Stainless Steel Tabletop: Corrosion-resistant, easy to clean, seamless design prevents dust accumulation and bacterial growth.
Intelligent Control System: Microcomputer control, touch switches, adjustable airspeed, displays operating status, integrates lighting and UV lamp interlock control.
Q4: Why does Deshengxin's clean bench design UV lamp interlock function?
A: This is to ensure personnel safety.
UV (UV-C) can cause severe damage to human skin and eyes. Deshengxin designed fan/lighting and UV lamp interlock program: When lighting lamp or fan is turned on for operation, UV lamp automatically forcibly turns off, preventing accidental UV exposure injury to operators. UV lamp can only be turned on for tabletop sterilization when fan and lighting are off.
Q5: How often needs HEPA filter replacement? Can I replace it myself?
A:Replacement Cycle: Under normal usage environments, HEPA filters are typically replaced every 1.5 - 3 years. Replacement is needed when airspeed significantly decreases and cannot reach requirements even at max setting (e.g., <0.3m/s), or dust particle detection exceeds standards.
Replacement Operation: Deshengxin clean benches adopt user-friendly quick-release design, usually panels can be removed from top or front for replacement without complex tools. Although self-replacement is possible, to ensure sealing and tested cleanliness, professional replacement and testing are recommended.
Note: Regular (3-6 months) cleaning or replacement of primary pre-filters is most effective method to extend HEPA filter lifespan.
Q6: Can clean benches be customized?
A: Yes. Source factory supports comprehensive customization.
Size Customization: Customize different widths (e.g., 1.8m, 2m double-person workbenches) and depths based on placement space and operation needs.
Material Customization: Optional full SUS304 stainless steel body, suitable for high cleanliness or corrosive environments.
Function Customization: Add tabletop sockets, gas interfaces, integrated microscope positions, anti-static devices, etc.
Q7: What are the standard operating procedures for using a clean bench?
A:Pre-heating: Turn on fan operation 20-30 minutes before operation to complete self-cleaning of work area.
Reduce Interference: Minimize vigorous arm movements in work area during operation, reduce unnecessary item introduction to avoid disturbing laminar airflow.
Correct Layout: Clean items should be placed upstream of airflow (near air outlet face), contaminated items downstream.
Regular Disinfection: Wipe tabletop with alcohol before and after operation, regularly turn on UV lamp for sterilization.
Q8: How does Deshengxin guarantee clean bench performance?
A:Strict Material Selection: Every fan, every sheet of filter paper is strictly screened.
Factory Testing: Every clean bench undergoes strict performance testing in our standard test room before factory release, including airflow uniformity test, dust particle count scan, filter leak test, electrical safety test, etc., ensuring all indicators meet ISO Class 5 (Class 100) standards before shipment.
Q9: What if clean bench noise is a bit loud?
A:Check Airspeed Setting: Resistance is low at beginning of use, medium-low speed settings can be used for lower noise. Increase setting as filter resistance increases.
Check Installation: Ensure equipment is placed stably, feet leveled to prevent resonance.
Deshengxin Advantage: We use low-noise type fans themselves, and optimize structure for vibration reduction and sound insulation. Whole machine operating noise is typically below 62-65dB(A), at industry leading level.
Q10: Why choose Deshengxin's clean bench?
A:Professional Manufacturing DNA: We are not simple assemblers, but manufacturers mastering core filtration and fan technologies.
Reliable Class 100 Environment: Strictly tested and verified performance provides solid assurance for your critical processes.
Human-Centric Design Details: Interlock safety, comfortable lighting, easy-clean tabletop, convenient maintenance, everything starts from user experience.
High Cost-Performance & Custom Service: Source factory direct pricing plus flexible customization capability meets your diverse needs.
Conclusion:
The Clean Bench is the "safety island" for your precision operations. Deshengxin is committed to using professional quality and thoughtful design to create the most reliable localized Class 100 clean environment for you. Contact us to choose the most suitable clean bench model for you!
