Don’t buy it because it’s cheap! Experts warn “death glass” turns hot water into poison
Experts warn: Be careful when using “thermal cups”. Don’t buy them because they are cheap. They may turn hot water into poison.
These types of glasses are easily available in general stores or online platforms. Prices range from tens to hundreds, but the quality varies.
“Water bottles” or “thermal cups” are familiar items to many people, especially those who like to drink warm or hot water. However, if you choose to use cheap and poor-quality thermal cups, you may be at risk of heavy metal contamination from the inner coating, which exceeds the standard and is like a ticking time bomb that slowly undermines your health. These cups may turn hot water into “poison” without you knowing it.
Health hazards from using low-quality thermal cups
Stainless steel, also known as Inox, is an alloy of steel that has been developed to be corrosion resistant and rust resistant. However, some types of stainless steel, such as grades 201 and 202, have a high manganese content but low corrosion resistance, making them unsuitable for use as a coating material inside thermal mugs that come into contact with hot water or acidic water. If used regularly, it may release hazardous substances that can negatively affect our health without us knowing.
If the thermos contains too much nickel, it can cause allergic reactions, affect the skin and respiratory system, and increase the risk of cancer. Manganese in large amounts can affect the nervous system, causing memory loss and depression. Cadmium, if accumulated in the โปรโมชั่นพิเศษจาก UFABET สมัครตอนนี้ รับโบนัสทันที body, can cause nausea, diarrhea, liver damage, and severe pulmonary edema, which can be life-threatening.
The dangers of heavy metals in low-quality thermal glass
CCTV reported that experts warn of the dangers of heavy metal accumulation in the body, especially in children. If ingested in large quantities, it can have serious effects on the nervous system and intelligence. In addition, using a thermal mug with high heavy metal content for a long time can hinder children’s development and may even be life-threatening.
In some cases, consumers who have used low-quality thermoses for a long time have started to experience loss of appetite, weight loss, fatigue. Health check-ups have found that the amount of heavy metals in the body exceeds the standard, affecting the functioning of the liver, kidneys, and other organs, indicating the dangers of substandard internal coatings that come into direct contact with food and beverages.
In addition, some thermal mugs may have problems with the lid not closing tightly. Even if it is tightly closed, hot water can still spill out, increasing the risk of scalding or accidents if it is accidentally spilled on you.
How to choose a safe thermal mug
- Shop from trusted brands
You should choose a glass or thermos from a reputable brand with a clear manufacturing source and undergo strict quality inspections. Avoid products without labels or unclear labels because they may be made from substandard materials and are at high risk of heavy metal contamination.
- Choose materials that are safe for your health.
You should choose a thermal mug that uses grade 304 or 316 stainless steel as the inner coating material.
– SUS304 is a commonly used material, corrosion resistant, highly stable, safe for use with drinking water.
– SUS316 contains molybdenum, making it more resistant to acids, suitable for use with highly acidic beverages or long-term use.
How to choose a safe thermal mug
- Check weight and smell
A good quality thermal mug will have a comfortable weight, be smooth to the touch, and have no roughness or surface defects. When opened, there should be a slight metallic smell, but no pungent or chemical smell. Low-quality mugs tend to be light, rough to the touch, and have strange smells, such as the pungent smell of formaldehyde or benzene, which are harmful to health.
- Test the tightness of the lid
Fill the glass with hot water, close the lid tightly, and turn it upside down. If there is no leakage, it means that there is a good seal. Try shaking it gently and listen for the water inside. If you hear a clear noise, it means that the lid is not tight.
- Test the heat retention efficiency
Good quality heat-insulating glass can maintain temperature for 6-12 hours. Fill with hot water, close the lid and wait for about 10-15 minutes. Then try touching the outside of the glass. If the outside is not hot, it means the heat insulation is good. If it feels warm or hot quickly, it means the heat is not well-insulated.
How to use a mug/thermal container correctly
Choosing a safe mug or thermos is important, but using it correctly is equally important to achieve maximum efficiency and avoid health effects from improper use.
- Clean before first use.
During the manufacturing, transportation and storage process, glasses may be contaminated with dust, germs and dirt. If not washed before use, foreign objects may enter the body through drinking water.
- How to clean
- Clean the inside of the glass, lid and silicone rubber with warm water and a mild dishwashing detergent to remove dust and residue.
- Rinse again with clean water, making sure there is no residue.
- Fill with hot water, cover and leave for 15-20 minutes to sterilize with heat.
After this, you can use it with confidence, reduce health risks and extend the life of the heat-insulating glass.
Precautions for using a glass/thermal container
- Do not overfill the container with water.
Hot water should be added to only 80%-90% of capacity to prevent water from overflowing and scalding hands when closing the lid. After adding hot water, wait for the temperature to drop slightly before closing the lid tightly to reduce the risk of high steam pressure that may make it difficult to open the lid or cause steam to scald hands.
- Close the lid after every use.
To prevent dust and germs from contamination, always close the lid after drinking.
Liquids that should not be put in a glass/thermal container
Storing certain types of liquids in a thermos for long periods of time can cause them to change their taste, react with the materials inside, and may have adverse health effects, including:
- Strong tea – High temperatures can cause tannins and caffeine to break down, affecting your health.
- Chinese herbal medicines – may cause changes in active ingredients and reduce the effectiveness of the drug.
- Salt water or mineral water – may react with the metals inside, resulting in the release of heavy metals.
- Acidic beverages such as fruit juices and soft drinks – Acid can corrode the inner materials, releasing heavy metals.
Choosing the right glass/thermal mug not only preserves the quality of your beverage but also protects your health in the long run.