The thermos flask is a special kind of bottle in which hot liquids like tea and milk remain hot and cold items like ice and cold water remain cold for a long time. Sir James Dewar first invented this flask in 1892. That is why it is also known as the Dewar flask. It consists of a double-walled glass bottle. These walls are silvered from inner side. The space between the walls is evacuated with the help of a vacuum pump and sealed. This bottle is then protected by a metal case and a cork is fitted on its mouth.
Do you know how this bottle helps in keeping the hot things hot and cold ? Normally, a hot substance becomes cold by losing its heat to the surroundings having a lower temperature. Similarly a cold substance becomes hot ! by absorbing heat from the surroundings having higher temperature. The function of the thermos flask is to prevent the flow of heat to and from the bottle. We know that heat can flow from one place to another by three modes – conduction, convection and radiation. The thermos flask prevents the flow of heat by any of these modes. The flask is made up of glass, which is a bad conductor of heat Hence heat does not flow by conduction. Since there is a vacuum between the walls of the bottle, flow of heat by convection is also ruled out. Due to the silvering of the walls, heat is not lost by radiation. As a result, hot things kept in la thermos flask do not become cold and cold ones do not become hot for a long time. A good flask allows you to keep your favourite beverage at hand. Thermos flask comes in different storage capacity starting from 350 ml to 3 liters even higher than liters. let’s find out which are the best Thermos Flask in 2 Litre capacity available in market.
(No.1 ) Milton Thermosteel thermos flask
If you’re looking for best Thermos Flask that’s capable of holding a sizable amount of coffee, this is an excellent choice. Milton is well known kitchen equipment manufacturer. This flask is made with high-quality stainless steel, this carafe utilizes vacuum insulation technology to lock in temperature and better preserve flavour and freshness. According to manufacturer’s official manual, It can keep hot beverages hot or cold for 24 hours (However, in our research we found it can keep beverages hot or cold up to 8 hrs. The device also contains an easy-to-reach push button to open the pour spout, allowing you to effectively serve coffee with one hand. Whether it’s a work-related function, birthday party, or even just a brunch you’re hosting amongst friends this is the perfect choice.
Key Features
- This Thermos Flask made of by Stainless Steel; with Capacity of 2000 ML; it’s come with Silver colour.
- Made by Double Insulation wall and Leak proof quality materials.
- Best Usage: Gym, Sports, School, Outdoors.
- Warranty: 1 year; Not covered in warranty: The warranty does not cover damages resulting from accidents, mishandling or tampering with the mechanism.
- Fabricated inside and outside in 18/8 quality stainless steel it’s tough and durable.
- Pre-condition bottle with hot water if using for hot beverage and cold water if using for cold beverage; Use Mild Soap for cleaning the Flask and advised to be kept open when not in use to avoid odor
Customers Review with Pros & Cons
1.) Super amazing product. Keeps water considerably hot for 15 hrs.
Product quality- Great
Design- Worth showing off
Easy to carry.
I’m loving it. Whoever visits my home, does compliment me on that. Worth buying!
2) I’d been using Milton flask since a decade but these days I feel that there is a compromise in quality. I was hunting for a 2 ltr flask since a very long time and fortunately I came across this one. It is worth every penny. Water stays hot for more than 12 hrs. This is a must have for people living in hills.
3) The flask has a good look and colour. The problem is with the mouth of the flask in so far as when you pour out the hot liquid, it gushes out unless you do it very carefully. The shape of the pouring mouth is not properly designed for a smooth flow. The cap is also not good enough and properly designed.
(No. 2) Borosil Stainless Steel Vacuum Insulated Teapot, Silver, 2 L
Borosil’s Thermos Flask is perfect to keep by your bedside or to keep your tea or coffee in to drink at your leisure. The copper coating and vacuum insulation keeps your drink at the right temperature even in an air conditioned environment, so that whenever you pour your drink, it’s just at the temperature you like it. The large mouth opening makes filling and cleaning easy. The outer body stays cool even when filled with hot liquids, and is condensation free when filled with cold beverages. Available in a classic brushed steel finish and a contemporary matte red and black, there’s a tea pot to suit all fancies. Borosil Thermos Flasks comes with pour spout and an easy-grip handle which lets you pour with one handle easily. It also makes it easy to carry the carafe with you to keep your group and you refreshed.
Double wall insulation – This Borosil Thermos Flask has been manufactured with sturdy SS 304 material inner side and SS 201 Grade on outer side. The material is 100% rust free which makes this carafe ideal for storing your beverages for longer periods of time. This tea pot is vacuum insulated, which makes it suitable for holding both hot and cold beverages and retaining their temperature for a long time.
Key Features
- Material type: Stainless Steel; Colour: Silver
- Insulation type: Double wall; (Keeps liquid hot/cold upto 8-12 hrs hot n cold); Leak proof: Yes
- Best Usage: Office/Picnic/Home
- Warranty: 1 Year; Covered in warranty:
- Double walled vacuum insulated with copper coating for better temperature retention
- Pour spout opens easily with push button ease, making one handed pouring simple
Customers Review with Pros & Cons
1) Good build and design. The lid is well shaped so you have good grip unlike cello and milton whether lid slips. Also the thread gets easily aligned whereas for other products you have to place the lid in one particular position and then rotate.
2) i found it very nice for warmth…. it keeps warm for 48 hours minimum….. easy to clean and handle….. durability is quite good in comparison to other brand product.
3) This did not keep the liquid warm for 24 hrs. The heat was reduced to half within 12 hrs. I assumed borosil was good brand, but was disappointed. I took this product for taking hot water or tea for 12 hrs journey. But if the heat gets reduced this fast.
Mark Louis Premium Thermosteel Thermos Flask (Thermosteel Carafe 2 Litre)
This Thermos Flask is Durable, Efficient and Convenient Liquid Storage Solution. The Mark Louis Thermos Flask is capable of keeping liquids hot or cold for up to 12 hours as it is vacuum insulated. The simple and elegant thermosteel body makes the carafe lightweight and convenient to carry along while travelling. The capacity of 2 litres allows a large amount of your choice of beverage to be stored. This product is ideal for serving piping hot tea and coffee for a group of people.
Durable Build Quality for Long-Lasting Use Manufactured by Mark Louis, this product is made with the highest grade of stainless steel which primarily emphasises on durability. The handle is crafted from quality hard plastic making it safe and easy for pouring. Easy to Use, Clean and Maintain a lever on the top allows you to use this flask with ease. By pressing this lever, you can pour the hot or cold liquid inside the carafe for storage. It is advised to use a sponge for cleaning as scrubbers may cause light scratches on the body.
- Material – Stainless Steel
- Colour- Red and Blue
- Capacity 2 L
- Brand Mark Louis
Customers Review with Pros & Cons
1) Super amazing product. Keeps water considerably hot for 2 long days.
Product quality- Great
Design- Worth showing off
Easy to carry.
I’m loving it. Whoever visits my home, does compliment me on that. Worth buying!
2) Looks great on the table. Does the job as advertised. But in summer only. As the ambient temperature falls below 20 degrees C, it cannot maintain tea hot over an hour. Be careful when opening and closing the lid as this seems to be the weakest part.
3) It’s good. Yes water remains warm for twelve hours. It’s too expensive. It could be cheaper because the lid seems to be very delicate. And I’m disappointed with the lid. It does not close properly one has to push by their hand. After the delivery on the fourth day. It looks beautiful. But what the use if you are dissatisfied. Feeling truly bad. I had high hopes after many good reviews of others. After all one has to experience.
