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Water filters · press bottles

GRAYL GeoPress 710 ml press bottle, 250 litre cartridge vs BACHGOLD press-through 500 ml bottle, 0.2 micron stated, 1500 litre cartridge

Two press bottles: one publishes a pore size, the other publishes claims — which suits you?

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Both are all-in-one press bottles: fill, press, drink, with no pump and no separate hose. The difference is what each maker chooses to print. BACHGOLD states a pore size of up to 0.2 micron and names the media behind it; the GRAYL listing sets out at length what the maker states the cartridge holds back, and never gives a pore size to hold that against. Neither publishes a flow rate or a weight. Nothing here says what either bottle makes water fit for — read the maker’s instructions and the local authority for the water itself.

GRAYL GeoPress 710 ml press water bottle in black camouflage finish

GRAYL GeoPress 710 ml press bottle, 250 litre cartridge

Wins 1 of 7

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≈ £108 / 120 €

BACHGOLD Selfpress black outdoor filter water bottle, 500 ml

BACHGOLD press-through 500 ml bottle, 0.2 micron stated, 1500 litre cartridge

Wins 3 of 7

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≈ £40 / 60 €

Line by line

Compared on GeoPress 710 ml press bottle, 250 litre cartridge press-through 500 ml bottle, 0.2 micron stated, 1500 litre cartridge
Micron rating Not published — the listing sets out at length what the maker states the cartridge holds back, and gives no pore size Up to 0.2 micron — stated as a filtration accuracy of up to 0.2 µm
Filter element type A replaceable press-through cartridge — stated; the media inside it are not named Hollow-fibre membrane with an activated carbon filter — stated
Stated flow rate Not published — no setup time, no pumping and no waiting is stated, which is not a figure Not published — ready to use within a few seconds is stated, which describes setup
Cartridge life 250 litres — stated for the replaceable cartridge 1500 litres — stated
Volume treated per press 710 ml (24 oz) at a time — stated 500 ml — stated as the volume of the bottle
Weight Not published Not published
Bottle thread compatibility Not published — the cartridge belongs to the bottle and no thread size is published Not published — the element is part of the bottle and no thread size is published

Each tick belongs to its own line and nothing more. The row of ticks is not a score: the two verdicts underneath settle the page, because these two answer different questions on the trail.

Which one, for whom

Buy the GRAYL GeoPress 710 ml press bottle, 250 litre cartridge

The GRAYL treats the larger volume at a time, 710 ml against 500, and it is the one of the two whose cartridge is stated to be replaceable — 250 litres, then a new one. It is also the listing with the most to say and the least to check it against, because no pore size appears anywhere in it.

Buy the BACHGOLD press-through 500 ml bottle, 0.2 micron stated, 1500 litre cartridge

The BACHGOLD is the one that publishes the specification this shelf is compared on: up to 0.2 micron, with a hollow-fibre membrane and an activated carbon filter named behind it, and 1500 litres of stated cartridge life against 250. It presses 500 ml at a time, so it is the more frequent stop of the two.

What people ask before buying

Which of these filters better?

Neither listing supports an answer. The GRAYL page sets out what the maker states the cartridge holds back and publishes no pore size; the BACHGOLD page states up to 0.2 micron and names its media. A claim and a specification are two kinds of statement, and neither is a result. What either bottle is approved for is in its instructions, and the water is the local authority’s subject.

Is 250 litres a short cartridge life?

It is the shortest stated figure among the six filters here that publish one, and BACHGOLD’s 1500 litres is six times it. Against that, GRAYL is the only one of these two whose cartridge is stated to be replaceable, so the figure is a service interval rather than the end of the bottle. Neither maker says what shortens it.

The full reviews

Prices in these summaries were read on the dates each review gives. The live figure sits beside every product.