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Why borosilicate glass?
All our glassware are entirely made of high quality thick non-fragile, lead free, heat-resistant borosilicate glass.
Borosilicate glass has a very low thermal expansion coefficient, about one-third that of ordinary glass.
This makes it resistant to thermal shock, more so than any other common glass.
Borosilicate glass composition is about 70% silica, 10% boron oxide, 8% sodium oxide, 8% potassium oxide, and 1% calcium oxide (lime), no
lead or anyother heavey metal is added so it is very safe to use with any beverage. Its superior durability with microwave and dishwasher
compatibility makes it ideal material for high-quality beverage glassware.
Why is Sun's Tea double-wall glassware unique?
Unlike other hand-made double wall (DBW) glasses on the market, Sun's Tea DBW glasses are made using digitalized machinary, the cutting edge
glass engineering technologies developed by Sunvalley LLC. Such automated process overcomes many serious issues from the hand-made product
such as egg-shell thin glass wall, pin hole on the bottom, water vapor between the double wall, etc. It is the 1st completely sealed double wall
drink glass in the market with high quality, high performance and robust enough for every day use.
The unique double-wall structure is made of strong, lead-free, heat-resistant and long-lasting borosilicate glass, which can stand a sudden
heat or cold shock and can take impact from free-fall ice ball from as high as 12 inches. The semi-vaccume between the doule-wall structure
dramatically reduces the heat exhcange between the content in the glass and the outside environment, it keeps the cold drink cold and the
hot drink hot for a much longer time than the ordinary single wall glass. You can hold a glass of very hot drink without getting your fingers
burned, or hold a extreamly cold beverage without any freezing feeling. Such structure also greatly reduces the water condensation forming
on the outer wall of the glass because of its thermal effect.
It is microwave safe, dishwasher safe and freezer safe!
Use and care
The double wall glasses can be used for hot drink, cold drink or iced drink. It can handle the ice cubes from the refrigerator ice dispenser if the ice cube
is not extra big.
In extremely hot and humid weather, you may see a thin layer of fog form on the outer surface of the glass if it holds some very cold drink.
It is normal for the open-mouth thermo container, especially glass.
The glass could be hand washed. It is very easy to clean it using Sun's Tea Push and Pull clean brush. or it could be dish washer washed, just make sure
do not put them into too crowed dishwasher or contact the other hard-surfaced objects to avoid breakage during the wash.
When breakage occurs
Sun's Tea glassware are designed and made for every day use, it is very durable in normal use. However, like all glassware, it could be broken
in sudden mechanic shock such as being dropped, knocked down, or when very heavy object like a metal folk or spoon is dropped in.
To achieve better thermo effect the glass has negative air pressure in between the double wall structure, so when the it does broken, you may hear
a loud 'pop'. Please discard the glass should fracture or breakage occurs. When clean up the broken glass, pick up the big pieces, and then use vacuum
cleaner to clear out the small pieces. Do NOT try to use mob to wipe the broken glass away.
Please contact Sun's Tea if the glass is broken unexpectedly.
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Copyright 2004-2010 Sunvalley Enterprises LLC. All Rights Reserved.
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