little I played with my two filters, gravity and I wanted to share my insights about their advantages and disadvantages.
Filter Pure Webtex Survive - the actual throughput (if you use it as a gravity filter) is a liter of 5:15 min. Free frighteningly. But it can be accelerated by simply pressing on the skin of water. In the field, after the first priming priming is not required again. Starts, even if it is dry. What enrages me is leaking slightly after a few uses of rubber gasket between the filter housing and an adapter to connect the hose. As for me, it's a little too quickly poured the equipment referred to as "military." The interior of the filter is good to dry before storage, or even pour out the water that it does not burden it. Webtexa spin filter can be easily and water but to pour it dry well need to wait 2 days: /
Filter Sawyer SP140 - in my opinion the best capital investment if you already spend money on a filter. Bandwidth is 1:40 liter per minute (with the possibility of acceleration by increasing the pressure in the skin). After several liters did not slow down. Did not require priming or before the first use, or later. The filter is sealed, unlike Webtexa. You can spin it and shake out the water. After 5 minutes, we dry filter.
Obviously filters are only means to obtain clean water. To test them chose a most foul and green water from the lake that I could find. Przefiltrowałem it first mechanically by a cloth. Then he joined the action filters. Both turned a greenish liquid in a perfectly transparent liquid. I failed to discern a greenish color. The only differences I could feel the taste of water. Webtex water gave a slight chemical taste: sweet pieprznym. The filter can actually applied some iodine compound. The water will not taste at all typical of ponds, from which it pulled out. Sawyer water filter gave a pleasant taste but after a careful examination could feel a gentle dose of jeziorowego zapaszku. Felt it was difficult for 2 people for 3 it is not sensed at the first attempt. In total, if not my suggestion that probably have gone unnoticed. Organoleptic showed that both filters produce water according to the original expectations and description of manufacturers of filters (except the chemical taste of water Webtexa). Unfortunately, tests of chemical and biological purity of the water, I am not able to perform.
Filter Pure Webtex Survive - the actual throughput (if you use it as a gravity filter) is a liter of 5:15 min. Free frighteningly. But it can be accelerated by simply pressing on the skin of water. In the field, after the first priming priming is not required again. Starts, even if it is dry. What enrages me is leaking slightly after a few uses of rubber gasket between the filter housing and an adapter to connect the hose. As for me, it's a little too quickly poured the equipment referred to as "military." The interior of the filter is good to dry before storage, or even pour out the water that it does not burden it. Webtexa spin filter can be easily and water but to pour it dry well need to wait 2 days: /
Filter Sawyer SP140 - in my opinion the best capital investment if you already spend money on a filter. Bandwidth is 1:40 liter per minute (with the possibility of acceleration by increasing the pressure in the skin). After several liters did not slow down. Did not require priming or before the first use, or later. The filter is sealed, unlike Webtexa. You can spin it and shake out the water. After 5 minutes, we dry filter.
Obviously filters are only means to obtain clean water. To test them chose a most foul and green water from the lake that I could find. Przefiltrowałem it first mechanically by a cloth. Then he joined the action filters. Both turned a greenish liquid in a perfectly transparent liquid. I failed to discern a greenish color. The only differences I could feel the taste of water. Webtex water gave a slight chemical taste: sweet pieprznym. The filter can actually applied some iodine compound. The water will not taste at all typical of ponds, from which it pulled out. Sawyer water filter gave a pleasant taste but after a careful examination could feel a gentle dose of jeziorowego zapaszku. Felt it was difficult for 2 people for 3 it is not sensed at the first attempt. In total, if not my suggestion that probably have gone unnoticed. Organoleptic showed that both filters produce water according to the original expectations and description of manufacturers of filters (except the chemical taste of water Webtexa). Unfortunately, tests of chemical and biological purity of the water, I am not able to perform.
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