| 31. | After all, with 11 water filters in your bag, there won't be room for sandwiches.
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| 32. | He sold water filters briefly before asking himself, " Do I really enjoy this ?"
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| 33. | NSF International is an independent organization that tests water filters and bottled water for purity.
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| 34. | The background of Isadore Witmark was selling water filters.
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| 35. | We have one of those Pur water filter gadgets that bolts onto the kitchen tap.
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| 36. | We were saved by Jim the Floating Gardener, who let us use his water filter.
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| 37. | Devices that work like water filters also are popular.
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| 38. | _Water filter _ improves taste of ice and water.
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| 39. | The two most common types of ceramic water filter are pot type and candle type filters.
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| 40. | Providing water filters or bottled water on an ongoing basis was rejected as being too expensive.
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