Blu thermal bottle is the world’s first flask that contains a replaceable filter attached to the flask, capable of removing up to 99.99% of contaminants in all four contamination zones (Aesthetic, Chemical, Dissolved Solids, and even Radiological) from your water while retaining the beneficial trace nutrients and minerals and simultaneously alkalizing it up to a pH of 9.5.

It can last up to 200 gallons (approximately 6-8 months). The dirtier the water, the fewer the gallons the filter can clean.

The Regular filter is capable of removing up to 99.99% of contaminants in all four contamination zones. The pH filter is capable of removing up to 99.99% of contaminants in all four contamination zones along with simultaneously alkalizing the water up to pH 9.5. Both the filters are capable of retaining the beneficial trace nutrients and minerals in your water.

You can conveniently shop for replaceable filters of your choice from the store on our website www.blufilters.com.

Yes, you can use it as a regular flask.

Yes, you can use the Blu thermal bottle for other beverages, but make sure you remove the

filter from the cap before you pour beverages other than water into the flask. When using without the filter, you can also add fruit, flavoring, and other supplements of your choice.

We recommend that you wash your flask regularly. If water sits in the bottle for a long time, it will become stagnant and create a foul odor. This can also occur due to the fruit, flavoring or other supplements you choose to add to your flask. Make sure to remove the

filter from the cap prior to washing the bottle and wash by hand or a dishwasher.

We recommend that you wash your Blu thermal bottle once a day, but it’s really up to your personal preference.

The flask can be washed with lukewarm water and mild liquid soap. Be sure to remove the filter from the flask cap before washing. The filter should not be washed, only rinsed and flushed with water.

The Blu thermal bottle is dishwasher safe, however, the filter is not! Be sure to remove the filter before placing it in the dishwasher. Additionally, we don’t recommend placing the cap in the dishwasher since it can reduce its durability.

Yes, the Blu thermal bottle can keep beverages hot for up to 12 hours.

Yes, the Blu thermal bottle can keep beverages cold for up to 24 hours.

Yes, you can put hot water in your flask without the filter. The water will remain hot for up to 12 hours.

The Blu thermal bottle can be placed in the freezer. Make sure to remove the filter from the cap before storing it in the freezer. The water will remain cold for up to 24 hours.

Yes, without the filter, you can add anything into the water. While using the filter do not add fruit, supplements, or flavor drops.

Using the flask and activating the filter is very easy. Once you’ve unpackaged your flask and removed the safety seal from the bottom of the filter, you will need to flush to activate it. Twist on the provided flushing tip to the filter and flush it with water for 3-5 minutes before you use it. Finally, fill up your flask with water and #SipBlu! Don’t forget to remove the filter when you want to use the flask for other liquids.

To remove the filter, you will have to first remove the cap from the flask. Then you can twist off the filter from the straw. If necessary, you can also twist the straw off from the cap.

If this occurs, there’s a quick fix you can try! Since it seems that the mouthpiece came loose, all you have to do is raise the mouthpiece and firmly pop it back into place. If the problem persists, please contact us and we would be happy to help!

The Blu pH filter can make water alkaline up to 9.5 pH, depending on the water source. For best pH results, use regular tap water.

Yes, the filter is replaceable. You can conveniently purchase a single replacement or stock up by visiting the store on our website www.blufilters.com.

Keeping up with tracking 200 gallons of water can be challenging. Blu’s IAMF technology will start to make it harder to sip water out of the straw as the life of your filter comes to an end.

Blu can remove more contaminants than any other filter in the market. Blu can remove Aesthetic Contaminants (offensive tastes, odors, silt, sediment, and chlorine), Chemical Contaminants (VOCs, toxic chemicals, THMs, PCBs, PCEs, PFOAs, PFOS, detergents, herbicides, pesticides (DDT), benzene, atrazine, and other harmful agricultural wastes), Dissolved Solid Contaminants (Heavy metals, aluminum, asbestos, cadmium, chromium 6, mercury, arsenic, lead, copper, nitrates & nitrites, and up to 90% fluoride), and Radiological Contaminants (Radon 222).

Yes. The Blu filter can remove heavy metals, aluminum, asbestos, cadmium, chromium 6, copper, arsenic, nitrates and nitrites, lead, mercury, and up to 90% fluoride. 

No, mold wouldn’t form if unclean water doesn’t sit in the bottle for too long.

IAMF is a breakthrough technology that includes an extremely high-tech porous microfiltration system. This selective microfiltration system contains thousands of

interconnected omnidirectional pores that trap any contaminants and only allow

water and good minerals through.

The Blu filter is extremely selective and does not eliminate or filter out good minerals.

The Blu thermal bottle is made out of stainless steel and all food grade approved materials. 

The plastic is BPA free.

Yes.

Yes. In fact, drinking 200 gallons of water from your Blu thermal bottle can reduce the use of plastic 16.9 fl oz. water bottles by 1,500.

Each flask weighs approximately 1.5 lbs.

The Blu thermal bottle can hold up to 26 oz. (700 ml).

Yes! The flask is BPA and lead-free.

No, it is not.

Blu filters have an indefinite shelf life.

No.

Yes, it is!

Currently, we are only shipping within the United States.

The cost of shipping and handling are calculated as soon as you enter your address. We offer free shipping on purchases over $75 and selectively via promotions.

Yes, you can. You may find all the relevant delivery options at checkout.

We offer free shipping on orders over $75 and selectively via promotions.

Blu accepts all major debit & credit cards (Visa, AMEX, Discover, MasterCard) as well as PayPal.

Blu offers a 90-Day Unconditional Guarantee. The “filter” is designed for water filtration only. The manufacturer warrants the portable water filtration system to the consumer for a period of 90 days from the date of purchase, when used in accordance with the manufacturer’s instructions. If there is any defect with the product, please return the unit (postage paid) to us with a valid purchase receipt. This guarantee does not cover improper use, failure to properly maintain, or premature clogging caused by overly turbid water. This warranty gives the consumer specific rights. The manufacturer shall under no circumstances be liable for any special, indirect, or consequential damages due to misuse of goods. The manufacturer makes no warranty of fitness or merchantability and no other warranty oral or written, expressed or implied, except as specifically set forth therein. The quality of the filtered water is not guaranteed if the product is not used as intended. For more information, please visit our Warranty page.

Any purchases of products from our website can be returned to Blu for a full refund within 14 days of the purchase date. In order to be eligible for return/exchange, products must be in an unused condition with their original packaging intact. For more information, please visit our Returns & Refunds page.