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Ocemida Ultima 3-in-1 Reverse Osmosis Replacement Filter
Ensure your Ocemida Ultima Countertop Filtration System continues providing refreshingly clean, great-tasting water by replacing the filters regularly with this Ocemida Ultima 3-in-1 Reverse Osmosis Replacement Filter.
This comprehensive filter cartridge combines three powerful stages of filtration into one convenient unit:
Stage 1 - Sediment Filter
The polypropylene sediment filter traps dust, rust, and larger particulate matter down to 5 microns in size to prevent them from entering the reverse osmosis membrane.
Stage 2 - Carbon Block Filter
The granular activated carbon block filter reduces chlorine, odours, and organic contaminants for improved taste and odour.
Stage 3 - Reverse Osmosis Membrane
The high-rejection TFC reverse osmosis membrane removes up to 99% of total dissolved solids (TDS), ions, heavy metals, fluoride, and other contaminants as small as 0.0001 microns for pristine purified water.
This long-lasting filter is designed for up to 12 months or 3,000 gallons of filtered water production when replaced on schedule. Quickly and easily replace just the filter cartridge.
Ensure optimal performance of your Ocemida system and enjoy unlimited clean, refreshing water with the Ocemida Ultima 3-in-1 Reverse Osmosis Replacement Filter.
We are shipping daily (Mon-Fri) from the USA and Canada and you can select your desired service.
The default free shipping is USPS in USA (3 to 5 days) and Canada post in Canada (2 to 7 days).
Orders over $200 require signature on delivery!!!
International orders: You may be subject to an International Service Assessment (ISA) fee. This fee is not charged by us but may be charged by your bank or credit card issuer for making an international transaction.
The ISA fee is typically around 1% to 3% per transaction. We do not cover charges associated with international imports.

Can't see your question?
Contact usTake out the RO filter, seal it in an airtight plastic bag, and store it in the refrigerator (not freezer)
Decreased water flow
Changes in water taste or odor
Visible sediment in the filtered water
Reaching the Ocemida's recommended replacement time
Yes, hard water can shorten filter life, especially for pre-filters and the RO membrane.
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This is a large-capacity insulated water bottle, a fill-it-and-forget-it type. The bottle is made from 316L stainless steel, which is one of the highest grades. The surface finish both inside and outside of the bottle is flawless, smooth and free from dents or kinks. The first thing I noticed was how well it kept the temperature. I filled it with hot coffee and left it in my bag, and hours later it was still warm enough without needing to reheat it. Same with cold drinks, if I add ice in the morning, it stays cold long enough for most of my workday. The double-wall vacuum flask insulation definitely feels effective and reliable. The bottle comes with an additional O-ring seal for the cap. The cap is also made from stainless steel however, the threads on the cap do not feel well-made, as there is a slight grinding noise when I close the cap. The bottle, though, remained leak-tight, with no sign of leakage even when it was being tossed around in my backpack. The wide-mouth design makes it easy to add ice cubes to the bottle, fill it, and thoroughly clean it. In summary, this bottle does the basics really well, keeps drinks hot or cold, feels durable, is comfortable to use, and doesn’t leak into my backpack.
I finally found a water bottle that’s built to last. Made from marine-grade stainless steel, it’s tougher than regular stainless steel and keeps water tasting fresh with no metallic flavor. It stays cold for up to 24 hours or hot for 12, has a leak-proof wide mouth that’s easy to fill, clean, and add ice to, and it’s completely BPA-free and plastic-free. Whether I’m at the gym, work, or on the go, this bottle keeps my drinks at the perfect temperature and gives me a reusable option I can count on every day.
This bottle made a great first impression as soon as I took it out of the box. The stainless steel finish looks clean and premium, and I really like the tall, slim profile. It feels sturdy in hand without being overly heavy, and the minimalist design looks much nicer than many of the bulky insulated bottles on the market.The build quality is excellent. The metal feels solid, the bottle doesn't impart any strange tastes to the water, and the insulation does a great job of keeping drinks cold for extended periods. It's become an easy bottle to grab for work, errands, or keeping on my desk throughout the day.The carrying loop on the cap is another nice touch and makes it easy to pick up or attach to a bag when needed. The wide opening is also convenient for filling, cleaning, and adding ice cubes.My only minor complaint is the cap threading and quality. It seals securely and doesn't leak, but it can sometimes take a second or two to find the correct groove when tightening it. It's not a major issue, but it's slightly less smooth than some bottles where the cap immediately catches the threads. And the overall quality of the lid feels slightly less premium than the rest of the bottle too.Other than that, I have very few complaints. The bottle looks great, feels premium, and performs exactly as expected. To highlight it all, there is minimal branding on the bottle, which I love. If you're looking for a sleek insulated bottle with a clean design and solid construction, this is an easy recommendation.
I picked this insulated water bottle for daily use, and it has quickly become one of my favorite bottles. The 316L surgical-grade stainless steel construction feels durable and premium, while the double-wall vacuum insulation does an excellent job maintaining beverage temperature throughout the day.The wide-mouth opening makes filling the bottle with water, ice cubes, or sports drinks very easy. It is also much easier to clean compared to narrow-neck bottles. The leak-proof lid seals securely, allowing the bottle to be carried in backpacks, vehicles, and gym bags without worrying about spills.Temperature retention is impressive for both hot and cold beverages. Cold drinks stay refreshingly cool for extended periods, while hot beverages remain warm long enough for commuting, workdays, or outdoor activities. The bottle feels solid in hand without being excessively heavy and is suitable for travel, hiking, camping, the gym, or everyday hydration.Pros:Premium 316L stainless steel constructionExcellent hot and cold temperature retentionLeak-proof lid prevents spillsWide-mouth design for easy filling and cleaningDurable double-wall vacuum insulationSuitable for work, travel, sports, and outdoor activitiesGenerous 1L / 32oz capacityCons:Larger size may not fit some cup holdersFull bottle can feel heavy when carried for long periodsWide opening may not suit those who prefer a narrow drinking spoutThis water bottle combines durability, insulation performance, and practical design. The premium stainless steel construction, leak-proof lid, and excellent temperature retention make it a dependable choice for staying hydrated throughout the day.
This H2STASH 1L insulated water bottle is a great choice for everyday use, workouts, or travel. The 316L surgical stainless steel construction feels premium and durable, while the double-wall vacuum insulation keeps drinks cold or hot for long hours.The wide-mouth design makes it easy to fill with ice and clean, and the leak-proof lid gives peace of mind when carrying it in a bag. The 1L capacity is also perfect for staying hydrated throughout the day.However, because of its larger size, it can feel a bit bulky and may not fit in all car cup holders.Overall, it’s a well-made and reliable insulated bottle with excellent temperature retention and a sturdy build.