In the fields of new energy, semiconductor, pharmaceutical research and development, the quality of glove boxes is related to research and development progress and experimental results. Facing a market with a mix of good and bad suppliers, a slight mistake can lead to traps such as false parameter labeling and lack of after-sales service. Based on industry experience, this article summarizes 10 questions that must be raised to suppliers to help you accurately avoid pitfalls and select glove box equipment that is cost-effective and suitable for your needs.
1、 What is the actual control value of water oxygen content in the glove box? How to verify?
Avoiding pitfalls: Some suppliers claim that the water oxygen concentration in the glove box is ≤ 1ppm, but in reality it may only refer to the initial value and not the long-term stable value.
Correct operation: It is required to provide a third-party testing report (such as 24-hour continuous operation data) and clarify the testing conditions (such as box pressure status and testing instruments).
2、 What is the leakage rate of the glove box? What method should be used for detection?
Avoidance point: The leakage rate directly affects the cost of gas consumption, and the atmosphere inside the glove box
needs to be cautious of the difference between theoretical and measured values.
Correct operation: It is required to provide a helium mass spectrometer leak detection report. The international standard is ≤ 0.05VOL%/H, and the smaller the value, the higher the sealing performance. For example, the leakage rate of Mikrouna glove box is less than 0.0006vol%/h.
3、 What is the adsorbent material for the purification column? What are the lifespan and replacement costs?
Avoiding pitfalls: Poor quality molecular sieves or copper catalysts may lead to a sudden drop in purification efficiency.
Correct operation: Clearly identify the molecular sieve brand and copper catalyst form (particle/honeycomb), calculate the annual maintenance cost (caution should be exercised if the single replacement cost is ≥ 20000 yuan).
4、 What are the production equipment and testing processes for glove boxes?
Avoidance point: Production equipment with poor accuracy may result in insufficient tightness of glove box parts produced; Poor testing technology may damage the sealing performance of the box.
Correct operation: Understand the supplier's glove box production equipment, whether non-destructive testing is used for testing, and conduct on-site inspections.
Understand the sealing material, sealing process, and sealing testing method of the glove box body. Poor sealing can allow external impurities to enter, damage the internal environment, and reduce the value of the glove box.
5、 Can you provide specific case studies of our industry? For example, customers of lithium
batteries/semiconductors/pharmaceuticals?
Avoiding pitfalls: General equipment may not be able to meet the needs of special scenarios.
Correct operation: Request proof of cooperation with customers in the same field (such as the Ningde Times lithium battery case and the China National Nuclear Corporation case).
6. Does it support customized functions? For example, integrated vapor deposition machines, low-temperature modules, or radiation protection designs?
Avoiding pitfalls: Modifying third-party devices may lead to compatibility issues.
Correct operation: Require the glove box supplier to provide integrated design drawings, clarify interface standards and energy consumption (such as additional power supply required for low-temperature modules).
7、 What is the cleanliness level of the glove box? Does it comply with our process standards?
Avoiding pitfalls: The cleanliness of the perovskite industry needs to reach level 100, while some manufacturers only reach level 10.
Correct operation: It is required to provide a cleanliness testing report that can match the actual process requirements.
8、 What is the consumption of inert gas? Do you provide energy-saving mode?
Avoiding pitfalls: Gas costs account for over 30% of long-term expenditures, and high energy consuming designs will significantly increase costs.
Correct operation: Compare the gas circulation rates of different models and prioritize equipment with energy-saving mode.
9、 What is the after-sales response time? Does it include free on-site maintenance?
Avoiding pitfalls: Remote areas or emergency situations may face high service fees.
Correct operation: Clearly define the warranty period (≥ 3 years), response time (such as responding within 5 minutes), etc., and clarify whether on-site maintenance during the warranty period is free.
10、 Can you provide a customer list for the past three years? Verified by all parties involved.
Avoiding pitfalls: False cases or zombie customers are common marketing tactics.
Correct operation: Randomly select units from the customer list (such as universities, enterprises), and verify the true evaluation through industry forums or peer networks.
Technical parameters>Brand halo: Speak with actual data instead of relying on online promotion, and prioritize suppliers who provide transparent reports.
Long term cost>short-term low price: Calculate the 5-year comprehensive cost (equipment+consumables+maintenance) to avoid purchasing at a low price and maintaining the machine at a high price.
Industry reputation>Algorithm ranking: Through on-site visits and exhibition exchanges, identify truly reliable glove box suppliers.
Through the above 10 questions, you can not only screen out suppliers with excellent technology and reliable services, but also significantly reduce procurement risks. Collect this article to safeguard your next glove box purchase!
