When choosing an insulated water bottle, people tend to focus on its appearance and insulating properties. They may not care much about the material of the insulated water bottle or know much about it. However, the material of it is the key to determining the quality of the insulation bottle.
The most insulated water bottle is made of stainless steel, which is resistant to high temperatures and has good thermal insulation performance. Thermos bottles made of other materials, such as glass, ceramics, purple sand, etc., have a low market share due to factors such as insulation, drop resistance, and price.
Stainless steel is incredibly durable and can last a lifetime if it’s cared for properly. It doesn’t react with water or food (unlike aluminum), so your drinks will always taste the way they should. And because it’s recyclable, it’s better for the environment!
Stainless steel materials include three main categories: SS 201, SS 304, and SS 316. What is the difference between them?
Most of the unqualified insulation cups exposed in the news use 201 stainless steel as the liner. 201 stainless steel has a high manganese content and poor corrosion resistance. If it is used as the liner of the vacuum bottle, long-term storage of acidic substances may lead to the precipitation of manganese. Manganese metal is an essential trace element, but excessive exposure to manganese can cause harm to the human body, damage to the nervous system, and more harmful to children during the growth and development period.
When stainless steel is in contact with food, its potential safety hazards are mainly the migration of heavy metals. Therefore, the stainless steel material in contact with food must be food-grade stainless steel. The most commonly used food-grade stainless steel is 304 stainless steel, which offers better corrosion resistance. This stainless steel needs to contain 18 percent chromium and 8 percent nickel to meet the standard.
It should be noted that many businesses will label stainless steel products with the word 304 in a conspicuous location, but labeling 304 does not mean it will meet the requirements for food contact use. 304 stainless steel products must pass the inspection of the relevant standard to meet the requirements for food contact.
- 316 stainless steel
304 stainless steel is relatively acid resistant but is prone to pitting corrosion when encountering substances containing chloride ions, such as salt solutions. Compared with 304 stainless steel, 316 stainless steel has added metal molybdenum, which makes 316 stainless steel have better corrosion resistance than 304 stainless steel. However, due to its high cost, 316 stainless steel is mostly used in medical and chemical fields.
How to choose a qualified Bulk insulated water bottle
When choosing an insulated water bottle, there are a few things you’ll want to keep in mind. Insulated bottles come in many shapes and sizes, but certain characteristics can tell you a lot about the quality of a product. The most important factors when it comes to selecting one of these handy little items include the material of the bottle, its thickness, and the lid.
1. Buy through formal channels and try to choose products from well-known brands. Consumers should pay attention to checking the integrity of the instructions, labels, and product certificates of conformity, to avoid buying substandard products.
2. Check its material type and material composition. Food grade 304 and 316 stainless steel is your best choice.
3. Open the bottle and check for any odors. The materials used in qualified products are food grade and generally have no peculiar smell.
4. Touch the mouth of the bottle and the inner liner with your hands. The qualified insulated bottle feels smooth inside, while most of the poor quality one feels rough.
5. Ensure that the accessories that are easy to contact with liquids such as sealing rings and straws are made of food-grade silicone.
6. Water leakage and thermal insulation performance tests should be carried out after purchase. Usually, the holding time should reach more than 6 hours.
Why buy a reusable insulated water bottle?
It’s better for the environment. Insulated water bottle takes fewer resources to produce a bottle of water and causes less pollution than bottled water. Each refill avoids the need to create single-use plastic bottles.
Reusable insulated water bottles cost less in a relatively short period of time. If you’re buying bottled water every time you can refill a reusable bottle with tap water, you’re wasting money.
Drinking from reusable bottles is just as healthy as bottled water. Since tap water is being tested by local, state, and federal agencies, there’s no reason to believe it’s less safe or cleaner than bottled water.
Everich insulated water bottle is the perfect way to stay hydrated and enjoy your beverages. Made primarily from premium quality and BPA-free stainless steel, they are durable and retain less odor and taste from previous contents than most plastic bottles. A trusted water bottles factory & supplier, please feel free to contact us!