Useful tips on buying a glass liner vacuum flask and using it
Glass liner vacuum flasks have become increasing popular, offered in a variety of designs, models, colors, and prices. The popularity of the device that retains heat of our beverage or keeps it cold may cause some difficulties to future users who should avoid poor-quality products. Right below are some simple recommendations on how to choose and use a glass liner vacuum flask.
How to choose a glass liner vacuum flask and how to check it after buying
Customers seeking a glass liner vacuum flask would find hundreds of the products offered by many manufacturers. How to choose the best product and not regret buying it after the first use? We would like to offer some simple recommendations for selecting a flask and checking it after the first use.
First of all, the vacuum flask and its body must be monolithic. The glass refill must be supported by a spacer bar so it won't be dangling. Please refrain from choosing the flask that fails to have these two features.
The flask, with all of its parts from the body to the glass refill to its cap, must not emit any chemical odor.
When we close or open the screw cap, there should be no effort, no tilt and also no gap between the body and the cap. Please check to see if the bottom part can be easily unscrewed as this shall be helpful when the glass refill needs to be replaced.
Users need to pay attention to the flask's temperature and duration, which are often indicated clearly by the manufacturer on the box label. The temperature of the liquid, which the manufacturer guarantees for 12-24 hours (as a rule), should not be below plus 50-60 degrees Celsius. If this feature is in place, the product is a good glass liner vacuum flask.
Capacity: Depending on the purpose of use, customers could choose a flask on their own. For family use, large capacity should be the best; For office or study use, small capacity is reasonable while for walking or sport training, a flask with medium capacity is the most suitable.
Having bought the glass liner vacuum flask, customers should check its operation. Pour boiling water into it and leave for a few hours. Touch the flask body to make sure it should be slightly warm, but not hot in any way. A hot case indicates that the flask does not retain the heat as stated by its manufacturer.
Glass refill replacement
In order to prolong the life of a glass liner vacuum flask, handle it with care. Users should refrain from dropping it, stirring vigorously with a metal spoon or pouring boiling water into the flask without warming it up in advance.
When the glass refill is broken, users can replace it with a new one by themselves. Please remember that this part may not be found in every store where vacuum flasks are sold.
Please also note that glass refills from different flask models are different, even from the same manufacturer. Therefore, when purchasing a new glass refill for replacement, please check if it fits the model. It is recommendable that customers look out for the brands that also offer repairing.
Should you have any questions or request a quotation of Rang Dong products, please send us an email to: export@rangdong.com.vn.
Websites: en.rangdong.com.vn and vacuumflask.rangdong.com.vn
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