GRAYL 411-BCO vs Platypus 13903

Buy the GRAYL GeoPress, model 411-BCO, ASIN B0C1JHC2M6, when you want the 24-fluid-ounce bottle whose special-feature cell names viruses and whose purification cell says electroadsorption and activated carbon. Buy the Platypus QuickDraw, model 13903, ASIN B0CL8L5RPQ, when you want the 1-liter squeeze filter whose purification cell says hollow fiber membrane and whose bullets claim bacteria and protozoa and do not claim a virus. These are drinking-water tools. They are not the same method, and they are not the same bottle.

Short version. A Sawyer Squeeze and a LifeStraw are the other hollow-fiber pair. A Sawyer Squeeze and a Katadyn BeFree are the squeeze-bag pair. Aquatabs and Potable Aqua are tablets, not a press and not a fiber. Match the model number before you match the word filter. A fiber that does not name a virus is not a substitute for a card that does.

The GRAYL title is GRAYL GeoPress 24 oz Water Purifier and Water Filter Bottle, Black Camo. The brand cell says GRAYL. The model-name cell says GeoPress Water Filter and Purifier Bottle. The model-number cell and the part number both read 411-BCO. The ASIN is B0C1JHC2M6. The UPC is 850039309083. The color selector on the page says Black Camo. Other colors exist on the same parent, including Bali Blue and Oasis Green. This order is the black camo chip. The capacity cell says 24 fluid ounces. The item-weight cell says 15.9 ounces. The dimensions cell says 3.4 by 3.4 by 10.4 inches. The material cell says polypropylene number 5. The purification-method cell says electroadsorption and activated carbon. The maximum-flow cell says 5 liters per minute. The total-dissolved-solids cell says a maximum of 300 parts per million. The shelf-life cell says 10 years. The warranty cell says 10 years. The included-components cell names a cap, an inner press, an outer cup, a purifier cartridge, and a one-way drink-mix valve. The number-of-items cell says 1. A highlight says the bottle purifies in 8 seconds. A bullet says the cartridge treats 65 gallons, which the same bullet writes as 250 liters.

24 fluid ounces in 8 seconds is about 5.3 liters per minute if you do the arithmetic. The flow cell says 5 liters per minute. Those two lines are the same boast written two ways, not two independent measurements. Do not add them. Do not cite 5 liters per minute as a lab result the card printed beside a stopwatch. The 8-second line is a highlight. The 5-liter line is a cell. Quote each one as what it is. A bottle that takes longer in your hands has not broken a second cell the page never printed.

The special-feature language names viruses, including rotavirus, norovirus, and hepatitis A, and it names protozoa and bacteria. That sentence is why this card is a purifier listing and not only a filter listing. The Platypus card does not print those virus names. Do not paste the GRAYL virus list onto model 13903 because both products sit in a water aisle. A hollow-fiber membrane and an electroadsorption cartridge are different hardware. The GRAYL material cell says polypropylene number 5. That is the plastic family, not a pore size. The cartridge life of 65 gallons is a bullet, not a flow rate. 65 gallons is not 24 fluid ounces. The bottle holds 24 ounces. The cartridge is the thing that is supposed to last for 65 gallons of presses. One press is one fill of the outer cup, not 65 gallons at once.

The weight cell says 15.9 ounces. A reviewer on a public clip said he weighed a GeoPress at 1 pound 5 ounces and that the fill was about 21 ounces. Those are his figures. They are not the cells. 1 pound 5 ounces is 21 ounces. 21 ounces is not 15.9 ounces. About 21 ounces of water is not the 24-fluid-ounce capacity cell. Cite 15.9 ounces and 24 fluid ounces from the card. Cite the reviewer's scale only as the reviewer's scale. The dimensions cell, 3.4 by 3.4 by 10.4 inches, is a bottle envelope. It is not the packed size of a squeeze bag. The TDS maximum of 300 parts per million is a cell. It is not a promise that every creek is under 300. If the water is salt, or if it is thick with silt past what a press can move, this card does not print a seawater rating. The 10-year shelf life and the 10-year warranty are two different cells that happen to share a number. Shelf life is storage. Warranty is a claim process. Do not treat them as one sentence.

The included line is specific: cap, inner press, outer cup, purifier cartridge, and one-way drink-mix valve. The number-of-items cell says 1. Five named pieces are the one bottle, not five bottles. A missing cartridge means you cannot press. A missing outer cup means you have a press with nowhere to put the dirty water. The color chip matters because the parent page sells other colors. 411-BCO is the black camo part. If the bottle that arrives is a different color under a different part number, you did not receive this row. The page can show Bali Blue and Oasis Green as other chips. Those chips are other orders.

The Platypus page that this article cites is ASIN B0CL8L5RPQ. The model-name cell says 1L Quickdraw Blue. The model-number cell says 13903. The part number says 25054. The UPC is 040818139035. The GTIN is 00040818139035. The manufacturer cell says Cascade Designs. The brand on the product is Platypus. The capacity cell says 1 liters. The item-weight cell says 3.36 ounces. A bullet says 3.3 ounces, which the same bullet writes as 95 grams. The dimensions cell says 5 by 3 by 3 inches. A bullet says the filter is 5 by 1.8 inches and the reservoir is 11.5 by 5.5 inches. The material cell says Plastic. The purification-method cell says hollow fiber membrane. The power-source cell says Adapter. The maximum-flow cell says 3 liters per minute. A bullet also says 1.75 liters per minute in a gravity setup. The TDS cell says 500. The special-feature cell says lightweight and portable. The included line names a 1-liter reservoir, dirty-side caps, a DrinkCap, a ConnectCap, and a backflush gasket. The removal claim in the bullets is 99.9999 percent of bacteria and 99.9 percent of protozoa. The card does not claim viruses. The warranty line says a limited lifetime warranty. A bullet says made in the USA.

3.36 ounces and 3.3 ounces are close and they are still two figures. Use 3.36 ounces as the weight cell and 3.3 ounces, or 95 grams, as the bullet. Do not average them into 3.33 and call the average a cell. The GRAYL weight cell of 15.9 ounces is a full bottle assembly. The Platypus weight is a filter-and-reservoir card that prints a few ounces. They are not the same object on a scale. A 15.9-ounce press and a 3.36-ounce squeeze filter answer different pack questions. The dimensions cell of 5 by 3 by 3 inches does not match the bullet that splits a 5-by-1.8-inch filter from an 11.5-by-5.5-inch reservoir. A 5-by-3-by-3 box is not an 11.5-inch bag. Treat the cell as the short box and the bullet as the two pieces. Measure what you unpack.

The power-source cell says Adapter. A squeeze filter does not plug into a wall adapter to make water. Treat Adapter as a broken field. The flow cell says 3 liters per minute. The gravity bullet says 1.75 liters per minute. Those are two setups, not one number you can average into 2.4. A squeeze in the hand is the 3-liter claim. A bag hung for gravity is the 1.75-liter claim. The GRAYL flow cell of 5 liters per minute is a press claim, and the 8-second highlight is the same press written as time. None of those rates is a creek. Cold, silty water slows a fiber and it slows a press. The cards do not print a silt rating.

The virus gap is the decision, not the ounce gap. The GRAYL special feature names rotavirus, norovirus, and hepatitis A. The Platypus bullets name bacteria at 99.9999 percent and protozoa at 99.9 percent and stop. Hollow fiber membrane is the purification cell. A membrane that the card does not claim against viruses is not a silent virus filter. If the water you are standing over is the reason you wanted a virus claim, model 13903 does not print that claim. Tablets are a third method. Aquatabs and Potable Aqua are named above so you do not pretend a fiber did a tablet's job or a tablet did a fiber's job. This page does not retest any of those percentages. It quotes the cells.

The TDS cells disagree in a way that is easy to misuse. GRAYL prints a maximum of 300 parts per million. Platypus prints 500. A higher TDS ceiling is not cleaner water. It is a different number on a different card. Neither cell is a measurement of the creek in front of you. A meter is how you read a source. These cards do not include a meter. The Platypus included line has no meter. The GRAYL included line has no meter. The one-way drink-mix valve on the GRAYL is a valve, not a test strip.

Who should buy the GeoPress, and who should buy the QuickDraw?

Buy 411-BCO if you want part 411-BCO, the black camo chip, the 24-fluid-ounce capacity, the electroadsorption cell, the virus names, the 15.9-ounce weight cell, and the included press, cup, cartridge, cap, and valve, and if you will treat the 8-second highlight and the 5-liter flow cell as one claim written twice. Buy 13903 if you want model 13903, the hollow-fiber cell, the 1-liter capacity, the bacteria and protozoa percentages, the DrinkCap and ConnectCap, and the lighter weight cell, and if you will ignore a power-source cell that says Adapter and a dimensions cell that does not match the bullet's two-piece sizes. Buy the Platypus only if you do not need a virus sentence from the card. Buy the GRAYL only if you will carry a 15.9-ounce assembly instead of a 3.36-ounce filter card.

Do not buy the GRAYL because a reviewer weighed a bottle at 21 ounces and you liked that number better than 15.9. Do not buy the Platypus because 3 liters per minute looked close to 5. The methods are different. Do not buy either one as a tablet. Do not buy a second GRAYL color and expect the part number 411-BCO to be printed on Bali Blue. One order is one item. The GRAYL count cell says 1. The Platypus included line is one reservoir and one set of caps, not a pair of bottles.

What is 411-BCO actually for?

This card is a press bottle. Dirty water goes in the outer cup. The inner press and the cartridge are what the included line says you push. The useful identity is 411-BCO, ASIN B0C1JHC2M6, UPC 850039309083, 24 fluid ounces, 15.9 ounces, polypropylene number 5, electroadsorption plus activated carbon, a 300 part-per-million TDS ceiling, a 65-gallon cartridge bullet, a 10-year shelf life, and a 10-year warranty. Black camo is the color this part number is. The virus names are the reason the title says purifier and filter. A filter-only reading that drops the virus sentence is not a reading of this card.

The bottle is a drink bottle after the press. It is not a gravity bag and it is not a pump you leave on the bank while you walk. The dimensions, 10.4 inches tall and 3.4 inches across, are a tall bottle. They are not a pocket straw. The one-way drink-mix valve is for a mix, which the included line names and does not describe. Do not assume the valve doses a chemical. The card does not say it does. Rinse the cup. The card does not print a backflush step, because the method is a cartridge press, not a hollow fiber you reverse. Backflush language belongs to the Platypus gasket, not to this part.

What is model 13903 actually for?

This card is a hollow-fiber squeeze filter with a 1-liter reservoir. The useful identity is model 13903, part number 25054, ASIN B0CL8L5RPQ, UPC 040818139035, Cascade Designs as the manufacturer, a 1-liter capacity, a 3.36-ounce weight cell, a hollow-fiber purification cell, a 3-liter-per-minute flow cell, a 500 TDS cell, and bullets that claim bacteria and protozoa. The model-name cell says 1L Quickdraw Blue. Blue is in that name. If the bag that arrives is a different color under a different model number, it is a different row. The DrinkCap and the ConnectCap are two caps. The dirty-side caps are the caps the included line says keep the dirty side dirty. The backflush gasket is the piece the bullet expects you to use when you reverse the fiber. The GRAYL cartridge is not this gasket, and this gasket is not a GRAYL cartridge.

Adapter in the power-source cell is not a plug. Ignore it. The 5-by-3-by-3-inch dimension cell is not the 11.5-by-5.5-inch reservoir in the bullet. Pack for the bag you can see, not for the shorter cell, if the bag is the long one. The made-in-USA bullet is a bullet. It is not a virus claim. The limited lifetime warranty is not the GRAYL's 10-year warranty cell, and it is not the GRAYL's 10-year shelf-life cell. Lifetime on one card and 10 years on the other are different sentences. Neither one is a test of the creek.

How do you fill them without mixing the two cards?

Fill the GRAYL by the included parts: dirty water in the outer cup, press with the inner press and the cartridge, drink from the bottle the cap closes. The 24-fluid-ounce cell is the capacity claim. The highlight's 8 seconds is the time claim for that press. If your press takes longer, you have not discovered a second official time. You have a slower press than the highlight. The 65-gallon bullet is cartridge life across many presses. It is not a reservoir. Do not try to pour 65 gallons through one cup in one sitting and then cite the flow cell as if it had promised that.

Fill the Platypus from the dirty side, squeeze or hang it, and drink through the DrinkCap. The 1-liter cell is the reservoir claim. The 3-liter-per-minute cell is the squeeze claim. The 1.75-liter bullet is the gravity claim. Use the gasket when you backflush, because that gasket is the included piece for that job. Do not backflush the GRAYL cartridge with the Platypus instructions. Do not press the Platypus reservoir like a GeoPress. The hardware does not match. A Sawyer Squeeze is the other squeeze people already compare with a LifeStraw and with a BeFree. Model 13903 is a QuickDraw, not those two. If you wanted the Sawyer, order the Sawyer card.

What actually fails on these two cards?

The GRAYL card fails when the 8-second highlight and the 5-liter flow cell are added together as two tests. It fails when a reviewer's 1-pound-5-ounce weigh-in replaces the 15.9-ounce cell. It fails when a reviewer's 21-ounce fill replaces the 24-fluid-ounce cell. It fails when the virus names are dropped and the bottle is sold as an ordinary fiber. It fails when 65 gallons is read as the size of the cup. It fails when the 10-year shelf life is read as the 10-year warranty, or the reverse. It fails when a different color chip is received and called 411-BCO. It fails when the five included pieces are counted as five bottles against a number-of-items cell that says 1.

The Platypus card fails when the virus list from the GRAYL is pasted onto a hollow-fiber cell that does not claim viruses. It fails when 3.36 ounces and 3.3 ounces are averaged. It fails when 3 liters per minute and 1.75 liters per minute are averaged. It fails when Adapter is read as a charger. It fails when the 5-by-3-by-3 cell is packed for and the 11.5-inch reservoir does not fit the pocket. It fails when 99.9999 and 99.9 are treated as the same percentage. Bacteria and protozoa are different claims with different figures. It fails when part 25054 is ignored and any blue Platypus bag is assumed to be model 13903.

What is this comparison not?

This is not a lab report. The percentages and the virus names are the cards' claims. This page did not run them. This is not a price quote. The price changes. Use the buttons if you want the live listing. This is not a tablet article. Aquatabs and Potable Aqua are linked so a chemical dose stays on its own page. This is not the Sawyer and the LifeStraw, and it is not the Sawyer and the BeFree. Those fibers are named so you do not order a press when you wanted a squeeze you already compared. This is not a claim that every source under 300 or 500 parts per million is safe to drink. The TDS cells are ceilings the cards print. They are not a field test.

So which water tool should you buy?

Buy the GRAYL if you want part 411-BCO, ASIN B0C1JHC2M6, the black camo bottle, the 24-fluid-ounce cell, the 15.9-ounce cell, electroadsorption and carbon, and a special feature that names viruses. Buy the Platypus if you want model 13903, ASIN B0CL8L5RPQ, the 1-liter hollow-fiber squeeze, the 3.36-ounce cell, and the bacteria and protozoa bullets, and if you do not need a virus sentence. Buy neither if you wanted a tablet, a meter, or a fiber that the card says removes viruses. The method line is the decision. The broken fields are the warning.

The MyLifeOutdoors film, "Holy Grayl or Major Fail? Grayl Geopress Water Filter Review," shows a GeoPress. The title does not say 411-BCO and it does not say Black Camo. The clip does not show the Platypus QuickDraw or model 13903. The reviewer talks about a weight and a fill that are not the Amazon cells. Use the clip for a GeoPress in a hand. Do not use it as a measurement of the 15.9-ounce cell, the 24-fluid-ounce cell, or the Platypus.