FAQ

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Q What gas should be used for cleaning the glove box system？

A The gas used for system cleaning in glove boxes is nitrogen, argon, or helium. The cleaning gas requires a purity of 99.99% or higher. When cleaning glove boxes filled with air, each standard glove box requires 4000-8000L (volume under standard conditions) of gas. When the glove box is completely filled with air, it is recommended to use 8000L or more of gas.
Q After cleaning the glove box system, the water and oxygen content in the atmosphere inside the box is still high

A Before cleaning the glove box system, turn off the circulation system and set the air pressure within the correct range. After cleaning, if the water and oxygen content in the atmosphere inside the box is still high, for example, above 200ppm, the glove box still needs to be cleaned. There are many reasons for inadequate cleaning, such as the newly placed equipment inside the glove box evaporating a large amount of water and oxygen, and the special structure of the glove box with large blind spots, which can affect the cleaning indicators.
Q How often should the operating gloves of the glove box be replaced?

A The replacement cycle of gloves for glove boxes should be determined based on actual usage and the degree of wear and tear of the gloves. Regularly check gloves for wear, damage, or gas leakage. The frequency of glove replacement is related to its usage frequency and usage environment. Gloves that are frequently used or used in harsh environments need to be replaced more frequently. Manufacturers such as Mikrouna suggest checking the wear and tear of gloves every 2-3 months and replacing them promptly when problems are found to ensure the normal operation and safe operation of the glove box.
Q What aspects should be paid attention to when operating the glove box？

A
The laboratory glove box is a professional equipment, and the following rules must be followed during operation:

1. It is prohibited to operate alone without professional training.

2.Before putting special drugs or unconventional items into the glove box, be sure to consult the glove box manufacturer first.

3.Before operating the glove box, be sure to check if the pressure range is correct.

4. Check whether the moisture and oxygen content in the glove box meet the standards.

5. Check if the gas in the steel cylinder is sufficient.

6.When abnormalities are found in the glove box equipment or there are safety hazards in the machine equipment, it is necessary to report them in a timely manner.

7. The operator of the glove box should not leave long nails, wear watches, rings, or other jewelry that may damage the gloves.

Following the operating rules of the laboratory glove box can ensure the safety of the glove box during operation and extend the service life of the equipment.
Q Why are most glove boxes made of stainless steel material？

A Stainless steel glove boxes have good corrosion resistance and are not easily damaged or deformed on the surface; The strength and rigidity of stainless steel glove boxes also far exceed those of other materials. Ordinary material glove boxes are prone to deformation when subjected to pressure or impact, which affects the structural stability and safety of glove boxes. Therefore, stainless steel is generally used as the material for glove boxes on the market.
Q What is the reason why the air conditioning in the glove box is not cooling？

A The air conditioning in the glove box of the air conditioner may not be cooling due to the following reasons:
1. refrigerant leakage, requiring maintenance of the unit pipeline system and adding refrigerant;
2. excessively high temperature control setting;
3. malfunctioning temperature sensing probe;
4. disconnected wiring, causing the compressor to not operate;
5. compressor failure; 6. blown fuse.
Q What should be noted when using the glove box transition compartment？

A
Attention should be paid when using the glove box transition compartment:

1: it is forbidden to open both the outer and inner doors of the large and small transition compartments at the same time;

2: When the large and small transition compartments are not in use, please evacuate them to a vacuum and place them to prevent air leakage due to the door not being tightly pressed;

3: When placing items into the glove box through the transition compartment, check if the items can be evacuated to prevent damage.
Q What should be noted when cleaning the glove box?

A When cleaning the glove box, it is necessary to pay attention to:
1. Adjust the pressure reducing valve to maintain a box pressure of>0.5mbar, otherwise the exhaust valve will automatically close to prevent air backflow;
2: If the steel cylinder runs out of gas during cleaning, the cleaning switch must be turned off and the pressure reducing valve must be closed before ventilation. Only after confirming that the secondary gauge of the pressure reducing valve is in the closed state can the steel cylinder be replaced to avoid damaging the pneumatic valve or joint due to excessive pressure when opening the steel cylinder;
3: Cleaning exceeds normal time or normal gas consumption, and the water oxygen value still cannot meet the standard. It is necessary to re detect the leak or contact the glove box manufacturer's after-sales engineer.

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Email: sales.lib@mikrouna.com