A Thermo Flask (500 ml – 1000 ml) is a vacuum-insulated container designed to maintain the temperature of liquids (hot or cold) over extended periods. These flasks are essential for personal hydration, medical transportation, fieldwork, and veterinary/human health applications where temperature preservation is critical. Available in various capacities like 500 ml, 750 ml, and 1000 ml, these flasks offer portability without compromising insulation performance. 

•   Capacity Options: 500 ml, 750 ml, 1000 ml

•   Temperature Retention: o Hot liquids: Up to 12–24 hours o Cold liquids: Up to 24–36 hours

•   Insulation Type: Double-wall vacuum insulation

•   Material (Interior): Food-grade stainless steel (SS 304)

•   Material (Exterior): Stainless steel or coated plastic shell (anti-sweat)

•   Lid Type: Leak-proof, screw-on or one-touch open • Mouth: Wide or narrow mouth options

•   Weight: Approx. 300g–600g (varies with size)

 •   500 ml: Compact, ideal for personal use, small samples, or quick hydration

•   750 ml: Mid-size for longer fieldwork or travel

•   1000 ml (1L): Large volume for sharing, veterinary field kits, or longer shifts

•   Shapes Available:

o   Slim cylindrical

o   Wide-bodied

o   Tumbler shape (modern flask-mug hybrids)

•   Classic Stainless Steel Thermo Flask

•   Thermo Flask with Handle or Strap

•   Push-button or Flip-top Flask

•   Built-in Cup Lid Flask (for field or hospital use)

•   Customizable/Branded Thermo Flasks (with logos or text) 

•   Inner Layer: High-grade 304 stainless steel

•   Outer Layer:

o   201/304 stainless steel

o   BPA-free plastic coating (on some models)

•   Seals & Gasket: Food-grade silicone (leak-proof and safe)

•   Medical Equipment Accessories

•   Personal Care & Utility Items

•   Field Medical Supplies

•   Veterinary Field Tools 

•   Cylindrical, ergonomic bottle

•   Detachable, leak-proof lid

•   Some include a tea filter or strainer

•   Personal hydration: For hot tea, water, or cold beverages

•   Medical/veterinary field kits: Transport temperature-sensitive fluids (glucose, saline, etc.)

•   Vaccine drives or first aid: Carry warm fluids in low-resource settings

•   Hospital/nursing care: Assist immobile patients with warm water 

•   Maintains temperature for long hours

•   Durable and rust-resistant

•   Leak-proof and travel-friendly

•   Easy to clean and refill

•   Available in various stylish designs

•   Slightly heavier than plastic bottles

•   Can dent if dropped (especially stainless steel models)

•   May retain smell if not cleaned properly

•   Not suitable for carbonated beverages

•   Do not use for carbonated or fermenting liquids

•   Always close the lid tightly to prevent leaks

•   Hand-wash preferred for maintaining vacuum seal

•   Avoid microwaving or freezing

•   Clean with warm water and mild detergent regularly

•   HS Code: 9617.00 (Vacuum flasks and other vacuum vessels)

•   HSN Code (India): 9617.00.10 (Vacuum flasks up to 2L capacity)

• Sterilization: Not required, but flasks should be cleaned before first use

• Handling Tips:

o   Rinse with hot or cold water before filling for better retention

o   Keep lid gasket clean for airtight seal

o   Air-dry after washing to prevent odour buildup

 Veterinary Application

•   Used by field vets to carry warm liquids during rural or mobile animal treatments

•   Assists in hydration support, emergency glucose solution, or warm saline

•   Ideal for vaccination camps or first aid in remote locations

Human Application

•   Daily hydration for hospital staff, patients, caregivers

•   Used in patient care for warm fluids (post-operative, paediatric, geriatric care)

•   Helps travellers or emergency responders stay hydrated with safe-temperature fluids

 Q1: How long does the Thermo Flask keep liquids hot or cold?

   A1: Depending on the model, it can retain heat for 12–24 hours and cold for 24–36 hours.

Q2: Can it be used to carry medical liquids?

   A2: Yes, it is safe for carrying fluids like warm saline or oral glucose solutions in medical or vet applications.

Q3: Is it safe for food and drinks?

  A3: Yes, if made from food-grade stainless steel (SS 304), it's completely safe and BPA-free.

Q4: Can I clean it in a dishwasher?

   A4: Some flasks are dishwasher-safe, but hand-washing is generally recommended to maintain vacuum seal integrity.

Q5: Are 500ml and 1000ml flasks airline-friendly?

  A5: Yes, but check with the airline regarding carrying filled flasks through security (empty ones are usually allowed).