Portable Water Purifier

Novelties

Cleaner Water With a Wand (No Magic Required)

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By ANNE EISENBERG

Published: March 2, 2008

TRAVELERS who don’t trust the water from a mountain stream or a hotel-room faucet have often used chemicals or filters to purify it. Now they have a high-tech option as well: swirl the water with a portable, lightweight wand that beams rays of ultraviolet light.

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The SteriPen JourneyLCD is built to be portable for travelers who fear the tap and for campers who want to do more than filter stream water.

The wand can clean up a quart of water that is clear — but could harbor stomach-wrecking microorganisms — in 90 seconds. The high-frequency light damages the DNA of bacteria, viruses and protozoa in the water like giardia and cryptosporidium so they can’t reproduce and create havoc.

To make the disinfection process easier for users to monitor, one new device on the market, the SteriPen JourneyLCD($129.95) has a liquid-crystal display that shows a countdown during purification (48 seconds for 16 ounces, 90 seconds for 32 ounces) and a smiley face at the end to signal that the job is done.

The device, which weighs a bit less than 5 ounces, including two disposable batteries, will be sold at camping, travel and other stores beginning in April and online at rei.com and other sites, said Edward A. Volkwein, the president of Hydro-Photon, the company in Blue Hill, Me., that makes the unit.

The L.C.D. screen and its messages are a good idea, said James P. Malley Jr., a professor of civil and environmental engineering at the University of New Hampshire in Durham, who specializes in the use of ultraviolet light for treating drinking water. “Forty-eight seconds is a long time for some people,” Mr. Malley said of the purification process with the wand. Without a display screen to guide them, people might be inclined to do a perfunctory job of disinfection.

“Human nature is to give a lick and a promise. You are swirling away with your arm out,” and might stop before the water is safe, he said. “It’s very wise to put a smiley face and other simple symbols there to guide people.”

A thorough swirling of the water being disinfected is important, so that photons released by the ultraviolet bulb can penetrate organisms in the water. Professor Malley also recommended that apparently clear water be filtered at a minimum with a fine piece of mesh screening, for instance, before it is purified. “UV is not meant to replace filters,” he said. “Filter first, and then disinfect second.”

If the water is tea-colored, has an orange or yellow tinge, or has objects like leaves in it, ultraviolet devices will not work well, as particulates in the water can absorb the light meant to destroy the harmful organisms, he said.

For example, “you wouldn’t want to use these devices to disinfect apple cider,” he said. “The light wouldn’t penetrate.”

The lamp that creates the ultraviolet light, which has a wavelength of 254 nanometers, is good for 10,000 treatments — about 2,500 gallons of water — said Miles Maiden, inventor of the SteriPen and the chief executive of Hydro-Photon. The batteries will last for about 100 treatments before they need to be replaced.

Ultraviolet rays, of course, can be damaging to eyes and skin, so the product comes with safety features. The SteriPen has electrodes or water sensors in its neck that prevent its turning on until the device is completely immersed in water, Mr. Maiden said. After that, the ultraviolet light is securely contained: the surface of the water acts as a mirror, blocking the ultraviolet light from escaping, and UV beams cannot pass through standard container materials.

SHANNON DAVIS, associate editor of Backpacker magazine in Boulder, Colo., liked the liquid-crystal display and the microprocessor of the new SteriPen Journey. “The display shows you that you’ve left the device in there the right amount of time,” Mr. Davis said, “and that adds confidence.” He also liked the snug fit between the pen and standard plastic bottles that hold, for instance, one or two liters of water. “The fit is so tight that you can insert the pen in the bottle,” he said, and then swirl the bottle vigorously without spilling a drop.

Meridian Design, of San Jose, Calif., also makes a portable ultraviolet water purifier, the mÜV ($49 at the company Web site, uvaquastar.com) that is rechargeable, said Dan Matthews, president of the company. The unit is in limited production, Mr. Matthews said. “We’re testing them individually before they are released to full marketing,” he said. “We’re not ready to make thousands of them until we’re comfortable we’ve worked out the kinks.”

Jamie DeBenedetto, a hiker and trail leader who lives in Phoenix, tried the mÜV and prefers it to the iodine tablets she usually carries in her backpack for purification of water. It is easy to recharge, she said, “and the water tastes a lot better than it does with iodine.”

E-mail: novelties@nytimes.com.

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Get a Virtual Break

I Need a Virtual Break. No, Really.

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By MARK BITTMAN

Published: March 2, 2008

I TOOK a real day off this weekend: computers shut down, cellphone left in my work bag, land-line ringer off. I was fully disconnected for 24 hours.

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Scott Brundage

The reason for this change was a natural and predictable back-breaking straw. Flying home from Europe a few months ago, I swiped a credit card through the slot of the in-seat phone, checked my e-mail and robbed myself of one of my two last sanctuaries.

At that point, the only other place I could escape was in my sleep. Yet I had developed the habit of leaving a laptop next to my bed so I could check my e-mail, last thing and first thing. I had learned how to turn my P.D.A. into a modem, the better to access the Web from my laptop when on a train. Of course I also used that P.D.A. in conventional ways, attending to it when it buzzed me.

In short, my name is Mark, and I’m a techno-addict. But after my airplane experience, I decided to do something about it. Thus began my “secular Sabbath” — a term I found floating around on blogs — a day a week where I would be free of screens, bells and beeps. An old-fashioned day not only of rest but of relief.

Like many, though, I wondered whether breaking my habit would be entirely beneficial. I worried about the colleagues, friends, daughters, parents and so on who relied on me, the people who knew that whether I was home or away I would get back to them, if not instantly then certainly before the end of the day. What if something important was happening, something that couldn’t wait 24 hours?

Or was I just one of those Americans who’ve developed the latest in American problems, Internet addiction disorder?

As a baby boomer, I knew mine was no unique thought; we’ve always been part of some trend or other. And sure enough, as soon as I started looking I found others who felt the need to turn off, to take a stab at reconnecting to things real rather than virtual, a moderate but carefully observed vacation from ubiquitous marketing and the awesome burden of staying in touch.

Nor is this surprising, said David Levy, a professor in the information school at the University of Washington. “What’s going on now is insane,” he said, assuring me that he used the term intentionally. “Living a good life requires a kind of balance, a bit of quiet. There are questions about the limits of the brain and the body, and there are parallels here to the environmental movement.” (Dr. Levy coined the term “information environmentalism.”)

“Who,” he then asked, “would say you don’t need time to think, to reflect, to be successful and productive?”

THIS movement to unplug appears to be gaining traction everywhere, from the blogosphere, where wired types like Ariel Meadow Stallings (http://electrolicious.com/unplugged) brag about turning off the screen one day a week (and how many books they’ve read so far this year), to the corporate world.

For example, Nathan Zeldes, a principal engineer at Intel (employees there read or send three million e-mail messages daily), is running a couple of experiments, one in which people spend a morning a week at work but offline, another in which people consciously reduce their e-mail output. Though he’s not reporting results, he’s encouraged and he says people are participating.

“Even many corporate leaders now believe you need time to hear the voice of the new inside,” said Anne Dilenschneider, a spirituality consultant in Montara, Calif., a coastal town 17 miles south of San Francisco. “And this time need not be a day, or even a specific period, activity or lack of one. It doesn’t necessarily mean a Zen sit, just some time of solitude.”

Even without a Zen sit (enough to scare me away from anything) or a phrase like “the voice of the new,” I found that the secular Sabbath was not all that easy to maintain. Something as simple as turning off the electronics is easy, but try to make a habit of it.

On my first weekend last fall, I eagerly shut it all down on Friday night, then went to bed to read. (I chose Saturday because my rules include no television, and I had to watch the Giants on Sunday). I woke up nervous, eager for my laptop. That forbidden, I reached for the phone. No, not that either. Send a text message? No. I quickly realized that I was feeling the same way I do when the electricity goes out and, finding one appliance nonfunctional, I go immediately to the next. I was jumpy, twitchy, uneven.

I managed. I read the whole paper, without hyperlinks. I tried to let myself do nothing, which led to a long, MP3-free walk, a nap and some more reading, an actual novel. I drank herb tea (caffeine was not helpful) and stared out the window. I tried to allow myself to be less purposeful, not to care what was piling up in my personal cyberspace, and not to think about how busy I was going to be the next morning. I cooked, then went to bed, and read some more.

GRADUALLY, over this and the next couple of weekends — one of which stretched from Friday night until Monday morning, like the old days — I adapted.

But recidivism quickly followed; there were important things to do — deadlines, urgent communications. You know how it is. I called Andrea Bauer, an executive and career development coach in San Carlos, Calif. She assured me that, oddly enough, it takes work to stop working. “It takes different formats for different people, and you have to build up to it; you can’t run five miles if you’ve never run at all.” Increasingly, I realized that there is more to the secular Sabbath than an impulse, or even a day off from e-mail. And there are reasons that nonsecular Sabbaths — the holy days of Christians, Jews and Muslims — have rules that require discipline. Even for the nonreligious, those rules were once imposed: You need not be elderly to remember when we had no choice but to reduce activity on Sundays; stores and offices — even restaurants — were closed, there were certainly no electronics, and we were largely occupied by ourselves or our families.

Now it’s up to us, and, as Dr. Levy says, there’s little encouragement. “One of the problems with needing to slow down is that within the climate of our primary culture it sounds wishy-washy,” he said.

But what’s wishy-washy about taking time off? It didn’t seem to me that I had to collect Social Security before I realized that a 70-hour week was nearly as productive as an 80-hour one, and if I couldn’t get it all done in either, it certainly wasn’t because I was taking too much time off.

I went back to nonwork, diligently following my rules to do less one day a week. The walks, naps and reading became routine, and all as enjoyable as they were before I had to force myself into doing them. It’s been more than six months, and while I’m hardly a new man — no one has yet called me mellow — this achievement is unlike any other in my life. And nothing bad has happened while I’ve been offline; the e-mail and phone messages, RSS feeds, are all there waiting for me when I return to them.

I would no more make a new-agey call to find inner peace than I would encourage a return to the mimeograph. But I do believe that there has to be a way to regularly impose some thoughtfulness, or at least calm, into modern life — or at least my version. Once I moved beyond the fear of being unavailable and what it might cost me, I experienced what, if I wasn’t such a skeptic, I would call a lightness of being. I felt connected to myself rather than my computer. I had time to think, and distance from normal demands. I got to stop.

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