• The brightest flashlight is now the Imalent M18 which shines at 100,000 lumens. It costs about $670.
• Another very bright flashlight is the Acebeam X70 shines at 60,000 lumens. It costs around $550.

The Brightest Compact Flashlights and Headlamps

• The Acebeam X80-GT is the brightest compact flashlight — it shines with an impressive 32500 lumens. It costs around $280.
• The brightest headlamp is the Lupine Betty Rx14 — it shines with 5000 lumens and costs around $1095.
• The brightest flashlight that uses AA cells is the Nitecore EA81. It shines at 2150 lumens. It takes eight AA batteries and costs about $120.
• The brightest headlamp that uses AA cells is the Fenix 15-U — the maximum output is 900 lumens. See a full review.
• The brightest headlamp that uses 16580 cells is ThruNite TH30 — maximum output is 3350 lumens
• Surefire has released the Titan Plus, a new keychain flashlight that produces 300 lumens at the highest light mode. It costs about $81. See the full review.

Brightest Compact Light: Acebeam X-80-GT

The Acebeam X8-GT0 shines at 32500 lumens — impressive for such a compact light!

It runs on six 18650 rechargeable batteries and has a beam range of 525 meters.

It is waterproof and impact resistant to 1.2 meters.

Home page: Acebeam

Another Bright Compact Flashlight: Thrunite TN36 UT

The Thrunite TN36 UT6 is a compact flashlight that outputs an impressive 7300 lumens. It runs on four 18650 rechargeable batteries. It’s waterproof to IPX-8 Standard (1.5 meters) and impact resistant to 2 meters.

The Thrunite TN36 UT6 is available on Amazon for about $230

The Brightest LED Flashlight That Uses AA Batteries: Nitecore EA81

The brightest flashlight with AA batteries is the Nitecore EA81, which shines at 2000 lumens. It takes eight AA batteries and costs about $200.

It’s waterproof to IPX-8 Standard (1.5 meters) and impact resistant to 1.5 meters.

The Nitecore EA81 is available on Amazon for about $280.

The Brightest Keychain Flashlight: Titan Plus

Surefire has released the Titan Plus, a keychain flashlight that produces 300 lumens in its highest light mode. Before this release, the brightest keychain light produced about 80-120 lumens, so this threefold increase is significant.

I’ve purchased this light and will be testing it soon. The 300-lumen mode lasts about 1 hour using a AAA Ni-MH battery.

All Surefire flashlights are designed and built in the USA, although some components are still sourced outside the US. Surefire says:

We do import a few components – most notably, the finest light emitting diodes (LEDs) from top-notch manufacturers outside the country – to incorporate into our products. All of that said, we do rely on as many American-made parts and components as possible, and the assembly of these components is done under our watchful eye in the U.S. to ensure optimal quality.

The Titan Plus is available from Amazon for about $81.

The post The Brightest LED Flashlights appeared first on Reactual.

ThruNite Ti3 Flashlight — produces 120 lumens — waterproofed to IPX-8 — impact resistant — use a single AAA battery

Titan Plus Flashlight  —  produces 300 lumens of light — durable construction — waterproof — made in USA

RovyVon A3 Flashlight — produces 700 lumens — IPX-65 water-resistant — waterproofed to IPX-65

Nite Ize Inka Pen — writes underwater — writes in temperature from -30 degrees to +300 degrees — ultralight — made in USA

Leatherman Micra — ultralight mult-itool — includes scissors — made in USA

World’s Smallest Titanium Toothpick — a portable toothpick made out of titanium

Quick Release Keychain Clip — ultralight titanium clip for a keychain

The post The Best Ultralight Keychain Tools appeared first on Reactual.

Qiviut (Musk Ox Down)

Qiviut (pronounced “kiv-ee-ute”) is the name for the downy hair of the musk ox. It is the warmest fiber in the world — about eight times as warm as sheep’s wool.

Muskoxen live in Alaska and Canada where temperatures sometimes drop to –100ºF (-73ºC), so they need protection. The Inuktitut name for the musk ox is “umingmak” meaning the “bearded one”.

Qiviut is an ultralight fiber and very soft fiber too. However, there is a limited amount of Qiviut produced every year, so it’s expensive.

In Alaska, qiviut is obtained from farmed animals or gathered from the wild during the molt. Unlike sheep, the musk oxen are not sheared.

Yak Down

Similar to qiviut, yak down is a very warm fiber that’s also lightweight and soft. It’s a more affordable alternative to the rare qiviut.

Yaks are primarily raised by nomadic Tibetan and Mongolian families. Their wool is combed once per year in the springtime.

According to Kora (a yak performance wear company), the wool is 40% warmer than merino wool. It has 66% greater air permeability and 17% greater water vapor permeability (tested with ASTM D1518, ASTM D737, ASTM E96).

Bison Down

Bison down is a very warm, insulating fiber. It is also very durable for such a soft fiber. It has a moisture regain of about 30%, compared to 18% for sheep’s wool — this means that even when saturated, the fiber draws moisture away from one’s skin.

There is only a limited amount of fiber available – estimated at 10,000 pounds per year versus 2,100,000,000 pounds of sheep wool.

It is harvested in Colorado and South Dakota, as a by-product of the bison meat industry.

Alpaca Wool

Alpaca wool is about three times as warm as sheep’s wool, and it is lightweight and durable. It contains no lanolin, which makes it hypoallergenic and odorless. Alpaca wool also has one of the highest moisture ‘wicking’ properties of all-natural fibers.

Alpacas are kept in herds that graze in the mountains of Peru, Bolivia, Ecuador, and Chile.

Other Wools

Other warm (and very soft) wools include llama, camel, angora, cashmere, vicuna, and guanaco.

Durability and Fineness

In terms of durability, bison is in most cases the strongest, followed by qiviut and yak down alpaca and merino.

In terms of fineness, any fiber that has a diameter of 20µ (microns) or less will feel very soft to the touch. In the alpaca world, the labeled “royal” alpaca should indicate fibers under 19 µ, “baby” alpaca should indicate fibers that are around 22.5µ, and “superfine” alpaca is 26µ.

There’s also an International Alpaca Mark that indicates the fiber is less than 28 µ.

In the merino world, look for wool labeled “ultrafine” (around 15-17 µ) or “superfine” (about 18-20 µ).

Here’s a list of fibers from finest to coarsest (in microns): 

• Vicuña (12µ)
• Angora rabbit (8 – 12µ)
• Suri Alpaca (10 – 15µ)
• Silk (10 – 13µ)
• Qiviut (11-13 µ)
• Cashmere Goat (14 – 19µ)
• Huacava Alpaca (15 – 29µ)
• Camel (15 – 22µ)
• Ultrafine Merino (15.5µ or less)
• Yak Down (17.5 to 19µ)
• Bison (14 -18µ)
• “Royal” Grade Alpaca (19µ or less)
• “Cashllama” Grade Llama (20 -21µ)48
• “Baby” Grade Alpaca (22µ or less)
• Mohair (23 – 28µ)
• Superfine Merino (15.6 to 18.5µ)
• Superfine Alpaca (26µ)
• Standard Sheep’s Wool (30 – 32µ)
• Human Hair (60 – 80µ)

Based on these criteria, these are the warmest woolens I could find:

Warmest Boot Socks

• 50% Bison and 50% Merino Boot Socks by Buffalo Wool Company — a very warm sock with full terry loop knitting — $45
• Icebreaker Mountaineer Socks — 79% Merino Wool, 20% Nylon, 1% LYCRA Spandex — $21
• Smartwool Merino Wool Heavy Cushioned Socks — 70% Merino Wool, 29% Nylon, and 1% Elastane — $22
• Time May Tell Merino Hiking Sock — 80% merino wool, 14% Nylon, 5% Poly, 1% Spandex — $15
• Darn Tough Boot Socks — 64% Merino Wool, 33% Nylon, 3% Lycra Spandex — $25
• Wayfarer Sock by Khunu — 56% yak wool, 34.5% nylon, 9.5% Elastane — £22 ($28)
• 78% Alpaca Socks by Williamston Alpaca — 78% Alpaca, 20% Nylon, 2% Lycra — made in the USA — $22

Warmest Crew Hiking Socks

• Icebreaker Everday Crew Sock — 79% Merino Wool, 20% Nylon, 1% Spandex — $20
• Fox River Trailhead Heavyweight Crew Sock — 77% merino wool — $17
• 100% Cashmere Socks by Lona Scott – very soft and warm — made in Scotland – $40
• 100% Alpaca Wool Socks by Gamboa — $20

Warmest Indoor Socks

• 100% Qiviut Socks by Qiviuk — musk ox wool is the warmest and softest fiber in the world — $219 (!)
• 90% Yak Wool Socks by Yakamel — soft, inexpensive yak wool socks — $21
• Bison and Silk Blend Socks by Fox River — these socks are great for indoor use — 36% bison wool, 36% silk, 26% nylon, 2% spandex — $43
• 90% Yak Wool Socks by DoctorTM — a bit thin but still warm — $13

Warmest Gloves

• 90% Bison Down Gloves — 90% Bison Down, 10% Nylon — the bison wool makes this glove particularly warm — the styling is rustic  — $98
• 100% Qiviut Gloves by Qiviuk — $250
• 100% Yak Wool Gloves by Mahogany Cashmere — $62
• 100% Yak Down Gloves by Handcombed – $34
• 100% Alpaca Double Knit Gloves — very thick but warm and durable – $36
• 100% Thick Cashmere Gloves by Oxford Cashmere — $40
• 100% Cashmere Gloves by Fishers Finery — $39

Warmest Hats

• 100% Qiviut Beanie by Qiviuk — $260 USD
• 80% Yak Wool Beanie by Khunu — £65 — $84 USD
• 100% Yak Wool Beanie by Kora — 230 g/m² — $45 USD
• 100% Yak Wool Beanie by Yakamel — double layer — $38 USD
• 100% Yak Down Beanie by Handcombed — $51
• 100% Yak Wool Beanie by Mahogany Cashmere — $78
• 90% Bison Down Beanie by Buffalo Gold — 90% bison down, 10% nylon – $85
• 100% Alpaca Beanie by Woop!Wear – $25
• 100% Cashmere 3-Ply Beanie by Fishers Finery — $40
• 100% Cashmere Cable Knit Hat by Fishers Finery — $33

Warmest Scarves

• 100% Qiviut Scarf by Qiviuk — $629
• 90% Bison Wool Scarf by Buffalo Wool Co. — $160
• 100% Yak Wool Scarf by Simplife — 27″ by 79″ – 3.3 oz — $89
• 100% Yak Wool Scarf by Simplife — 39″ x 79″ – 10.6 oz — $130
• 100% Yak Travel Blanket by Khunu — 47″ by 74″- 3.8 oz — £310.00 ($389 USD)
• 90% Bison Down Knit Scarf — 90% bison down, 10% nylon – $125
• 100% Qiviut Heavy Weight Aleutian Scarf by Oomingmak — $275
• 100% Alpaca Scarf by Kuna — $99
• 100% Cashmere Women’s Scarf by Fishers Finery — $52
• 100% Vicuna Scarf — $1790

Wool Fiber Reference

• Fleece & Fiber Sourcebook is a good reference on all the different types of wool in the world
• In Search of the World’s Finest Wools – a photographic search around the world to find the finest wools available

The post The Warmest Socks, Gloves, Hats and Scarves appeared first on Reactual.

Brightest Bike Light: Niterider Pro 3600 Lumen Light

The Niterider 3600 Pro is a 3600 lumen light made in the USA. This light has two chambers, and each chamber contains three Cree XML LED bulbs.

Niterider have a great reputation, and I’ve found their lights to be very durable — they’ve survived a few falls onto pavement from my bike.

This light is very bright and projects a wide beam hundreds of feet. A unique feature of this light is the included DIY software, which allows you to customize the settings it to your needs.

Brightest Bike Light With Built In Battery

Note that the light’s beam is just too bright to use in an urban area, unless you greatly step down the intensity! If you feel you’ll be doing this, you might consider the 1800 Lumen Niterider or the 1200 lumen Niterider.

The post The Brightest Bike Light appeared first on Reactual.

• For well water or other problematic water, I recommend Big Berkey drip filters. These filters use a combination of ceramic and carbon block filtration. Overall, they are the least expensive type of filters to maintain.
• If you are only interest in a pitcher filter — this BWT filter will remove most contaminants
• If you are able to spend $1500 to $3000, “whole house” filters are the an inexpensive long terms option. These filters are installed at the pipe where the municipal water pipes enters your home. I recommend the whole house filter by Pure Effect.

The Contaminants You Want To Remove

Typically, you want to remove these contaminants from your water:

• Toxic metals (Lead, Mercury, Aluminium, Cadmium, Chromium, Copper, etc.)
• Additives (Chlorine, Chloramines, Fluoride)
• Chlorination By-Products (Trihalomethanes or THMs)
• VOCs and other Organic Compounds (Pesticides, Herbicides, Pharmaceuticals, Fuels)
• Bacteria and viruses (Giardia, Cryptosporidium, etc.)
• Radioactive substances (Radon and Uranium, etc.)

If you use municipal water, you will usually find these contaminants:

• Chlorine
• Chloramines
• Fluoride
• THMs (Trihalomethanes)
• VOCs (volatile organic compounds)

If you use well water, these are the most common contaminants you’ll find:

• Particulate matter (dirt, bits of leaves, etc.)
• Bacteria and viruses
• VOCs (volatile organic compounds)
• Radioactive substances

The Effectiveness Of Different Types Of Water Filters

Pitcher Filters

Pitcher-style filters such as Brita filters are inexpensive units, making them very popular with consumers. However, in the long term, they are actually one of the most expensive option. The filters cartridges require frequent replacement — the cost for 40 gallons is $7-10 each, or $130-$190 for 750 gallons.

Almost all pitcher-style filters use GAC or “granulated activated carbon” as the filtration medium. Typically, GAC is coconut husks that have been heated to a high temperature in the absence of oxygen and then granulated. These filters do remove some chlorine and hydrogen sulfide (rotten eggs odor) — but are not effective at removing VOCs, metals, pesticides or fluoride. Overall, they are not very effective water filters.

Faucet Filters

Filters that attach to your kitchen faucet are very similar to Pitcher Filters, but they do filter a little better than the pitcher-style filters. However, they have the same drawbacks — they are expensive to maintain and they do not remove many contaminants. You must replace filters every 100 gallons at $20-$40 each or $140-$180 for 700 gallons.

Colin Ingram, author of the The Drinking Water Book rates all faucet filters no higher than “Acceptable”.

Gravity-Fed Drip Filters

In my opinion, the best water filters are gravity-fed drip water filters. These filters are excellent at removing chlorine, chlorination by-products, fluoride, VOCs, pesticides, particulates and pharmaceuticals. These filters use “candle” type filters, which are widely available and can be customized to your specific filtration needs.

Gravity-fed filters require no electricity to operate — water is filtered as it drips from the upper chamber to the lower chamber. Because the water is filtered slowly, the filtration is much more effective than a faucet-mounted filter. Generally, slow filtration methods tend to be best.

Berkey is best-known drip filter manufacturer. They make good quality filters. You might also consider ProPur filters. Their latest filter, the ProOne G 2.0, will remove fluoride — including hydrofluorosilicic acid (few filters remove this contaminant).

These filters use carbon block filtration, which works by the process of adsorption (different than absorption). In this process, the carbon attracts certain contaminants at the molecular level, and the contaminants become attached to the surface of the carbon. Once the surface of the carbon is full, the filter must be thrown out and replaced. However, the ProPur filters can be periodically scrubbed, and thus reused for years.

These filter are certified to NSF/ANSI standards #42 (test for chlorine, taste, odor and particulates), NSF Standard #53 (tests for Cryptosporidium, Giardia, lead, VOCs and MTBE) and NSF Standard #61 (tests that toxins aren’t leached into water). They are manufactured in England.

Berkey filter are available from Amazon for about $300.

Overall Rating: Excellent

Reverse Osmosis Filters

Reverse Osmosis filters use a membrane which removes many contaminants from water. They are usually paired with a Granulated Activated Charcoal filter to remove chlorine. Most reverse osmosis filters are installed under the sink and have a holding tank. The semipermeable membrane separates many contaminates (which usually have a larger particle size that water) from the water and rejects a large amount of water in the process. The result is a waste of several gallons of water for every gallon filtered and many naturally occurring minerals (including calcium and magnesium) are also removed from the water.

However, they are quite effective filters, in terms of removing contaminants. However, they do not reduce VOCs or pesticides (unless a Carbon Block filter is included). They can take up to an hour to filter one gallon of water and the filters need to be replaced regularly.

If you want to go this route, I recommend the iSpring Reverse Osmosis System, which is quite reliable.

Overall Rating: Very Good

Countertop Distillers

Countertop distillers are effective water purifiers, but they take some time to distill water (for example 5 hours to distill 1 gallon). They also require electricity to run, and they give off some heat and the integrated fans make some noise. Also, most distillers do not remove VOCs (like benzene) because they have a lower boiling point that water. So they will vaporize together with the stream, resulting in a contaminated distillate.

Countertop distiller that get a rating of “Excellent” from Colin Ingram in the The Drinking Water Book are: Megahome Countertop Distiller, Waterwise 4000 and Waterwise 8800, Kenmore 34480 and Pure Water Mini-Classic.

Megahome Countertop Water Distiller

This distiller is sold under many brand names — it’s the most widely distributed distiller in the world. It has many quality components despite being inexpensive. It produces 1 gallon of water in 5 hours. The water is passed through a small granular carbon filter. There’s a sealed connections from the distiller to the water collection container, so there is minimal risk of contamination by air. The unit has a stainless steel boiling chamber that is easily accessible for cleaning.

The Megahome Countertop Distiller is available from Amazon for about $150.

Waterwise 4000 Countertop Distiller

This is a more powerful version of the distiller listed above. It has the same features but produces 1 gallon of distilled water in 4 hours. Also received an “Excellent” rating from Colin Ingram in the The Drinking Water Book.

The Waterwise 4000 is available from Amazon for about $320.

Overall Rating: Excellent

The post The Best Water Filters appeared first on Reactual.

If you want to remove both chloramines and chlorine from your shower, I recommend a vitamin-C based shower filter, like the Sonaki In-Line Filter

This combination filter is also available — it incorporates a sediment filter and a Vitamin C filter into one unit.

The Details

Almost all popular shower filters available today only remove 20% – 80% of free chlorine (not total combined chlorine) from your shower. This includes shower filters that are certified by the NSF #177 Standard — unfortunately this standard only indicates that a filter will remove 50% of free chlorine in the water.

Also, many cities now treat water with chloramines instead of chlorine. There are no conventional shower filters that will remove more than a small amount of chloramines from your shower. The only way to remove chloramines is to use a Vitamin-C based shower filter which are only made in Korea and Japan.

Why Filter Your Shower?

Because your skin absorbs substances while showering. Typically, 60% of the chlorine that most people absorb daily comes from showering in chlorinated water. Chlorine damages your hair and skin.

Shower water also contains things like heavy metals and VOCs (volatile organic compounds). Ideally, all these things should all be filtered out, but filtering water at the showerhead is problematic, because the water is typically hot and under high pressure, making filtration difficult. Carbon filters, which are normally excellent at remove chlorine, cannot handle the volume and heat of shower water.

Because of these problems, most shower filter makers rely on a metallic medium called KDF. Shower filter vendors typically show impressive charts to demonstrate long-term removal of chlorine. However, if you read the tests carefully, you’ll see that they apply to “free chorine” (chlorine that has not combined with other constituents in water), and the reality is that KDF-filters have little effect on “total chlorine” (combined chlorine). In fact, chlorine is often added at the water plant as a blend with ammonia called “chloramine.” KDF is not effective at removing chloramine or combined chlorine.

Here are the details on my recommended shower filters:

Vitamin C Shower Filters

Vitamin C shower filters are very effective in removing chlorine and chloramines from shower water. Chloramine or NH₂Cl  (a combination of chlorine and ammonia) is now commonly being used in place of chlorine for disinfection, but chloramines are not easily removed from water. Carbon filters are virtually useless in showers, because they do not work when the water is warm, and they also get clogged fairly quickly. KDF filters also don’t perform well in hot water, and they don’t remove chloramines. However, Vitamin C filters can remove chloramines effectively from water. To back this up, the San Francisco Public Utilities Commission now states on their website that only Vitamin C can be used to remove chlormaines from municipal water. Here is the quote from the Commission:

Vitamin C (ascorbic acid) has recently been included in AWWA Standard (AWWA, 2005b) as one of the methods for dechlorination of disinfected water mains. SFPUC and other utilities have used Vitamin C for dechlorination prior to environmental discharges of chlorinated and chloraminated water. Since ascorbic acid is weakly acidic, the pH of water may decrease slightly (Tikkanen et al., 2001). Ascorbic acid has been used for a long time as one of the dechlorinating agents for preservation of chlorinated or chloraminated water samples for laboratory analysis.

The full document can be found here.

Vitamin C filters are simple in design — they contain a solid block of Vitamin C (ascorbic acid), and water runs through the filter and comes into contact with the Vitamin C. The Vitamin C neutralizes about 99% of the chlorine and chloramines in the water, and their effectiveness does not diminish until the Vitamin C is completely used up.

My recommendation for a Vitamin C showerhead is the Sonaki In-Line Filter

The filters last about 2-4 months before they need replacing, depending on how many showers you take. The filter is transparent, so you can see when the Vitamin C has run out.

Refills for the Sonaki filters are priced at $37 for 5 filters.

Sprite HOB-CM Brass Shower Filter

If you are just interested in removing free chlorine and sediment from your water, my recommendation is to use a Sprite Shower Filter. This filter is NSF Certified to standard #177 for shower filtration. It removes most free chlorine and some combined chlorine, sediment, hydrogen sulfide, iron oxide. Besides the fact that it does not remove chloramines, this is pretty good filter, and it is constructed with brass instead of the usual plastic.

The filter comes with a one year warranty, it is rated to filter 20,000 gallons or last 12 months, which ever comes first. It should be flipped half-way through the year. If the O-ring on the filter breaks, Sprite will replace it for free.

You can get the Sprite Shower Filter on Amazon for around $48.

See also my review of low-flow shower heads — these shower heads can be used in conjunction with these filters.

The post The Best Shower Filter appeared first on Reactual.

The best portable water filters available today are:

• The Sawyer Products Complete 4-Liter Filtration System. Filters down to 0.1 microns. This includes almost all pathogens, except certain viruses. It costs about $180.
• The Katadyn Pocket Water Microfilter. Filters down to 0.2 microns. It costs about $340.

Another reliable method of killing all pathogens in water is using chlorine dioxide tablets, such as Katadyn Micropur Purification Tablets.

The Details

Portable filters are designed primarily to remove pathogens from outdoor water. Some units also include carbon filters to reduce VOCs and toxic metals in the water.

These are the three type of pathogens you want to remove from wilderness water:

Protozoan Cysts (Cryptosporidium parvum, Giardia lamblia)

Size: 1 – 20 microns

Type of filtration needed to remove: Micro-filtration, ozonation or reverse osmosis, UV (ultraviolet light)

Bacteria (E. coli, Salmonella, Campylobacter jejuni, Yersinia entercolitica, Leptospira interrogans, etc.)

Size: 0.1 – 10 microns

Type of filtration needed to remove: Micro-filtration needed, ozonation or reverse osmosis, UV (ultraviolet light)

Viruses (hepatitis A, rotavirus, enterovirus, norovirus, Norwalk virus)

Size: 0.025 – 0.1 microns (25 nanometers to 100 nanometers)

Type of filtration needed to remove: Ultra-filtration needed – ozonation or reverse osmosis, UV (ultraviolet light)

Notes On Pathogens

• Pesticides, herbicides and other toxins and pollutants associated with agriculture and urban development do not normally impact water sources found deep in wilderness areas
• Viruses are rarely encountered in North American wilderness waters
• Bacteria (including beneficial bacteria) is naturally present in surface water
• Protozoan cysts and viruses are found in water contaminated by animal or human waste (principally feces)

The Best Portable Water Filter: Katadyn Pocket Water Microfilter

The Katadyn is a dependable filter which has been used by back country hikers for many years. The filtration member is rated at 0.2 microns.  The silver-impregnated ceramic element is effective against bacteria and protozoa, and it will filter 50,000 liters (13,000 gallons) before a replacement is needed.

The Katadyn Pocket Water Microfilter is available from Amazon for about $340.

Another Alternative: Sawyer Products Complete 4-Liter Filtration System

The Sawyer Filtration System is an excellent kit, that filters down to 0.02 microns, using a hollow fiber membrane. That’s almost on par with the Lifesaver, with it’s 0.015 micron filtration. Thus, the Sawyer can filter out most pathogen, including viruses.

What’s great about this system is that it almost never needs a replacement filter. The manufacturer has a guarantee that it will filter one million gallons before replacement. However, long-time users report the water reservoir bags need replacing after a couple of years.

The Sawyer System is gravity-fed, and allows you to purify 4 liters of water in about 10 minutes.

The Sawyer Products Complete 4-Liter Filtration System is available from Amazon for about $180.

Chlorine Dioxide Tablets

Chlorine dioxide tablets are a good choice for water purification. They will destroy all pathogen in water. Also, they leave no taste in the water (unlike iodine tablets). Like all water treatment tablets, these take 15 minutes to destroy viruses and bacteria, 30 minutes to destroy Giardia, and 4 hours to destroy Cryptosporidium.

I recommend the Katadyn Micropur MP1 Purification Tablets. This is only tablets registered with the EPA.

Boiling Water

You can boil water for one minute to destroy all pathogens. It is a foolproof treatment method. Only one minute of boiling is required. The most heat-resistant pathogen out there is the virus hepatitis A. Even hepatitis is believed to die in less than one minute in water heated to 98°C/208°F. It is because of hepatitis A (or maybe just tradition) that some health organizations and wilderness rangers persist in recommending at least 1 minute of boiling time to purify water, and 3 minutes at higher elevations.

The post The Best Portable Water Filters appeared first on Reactual.

All of these attributes make titanium an ideal metal for constructing durable pocket tools. However, note that many products labeled “titanium” are just titanium colored, or they only contain a thin coating of titanium. The tools listed here are made with solid titanium or an alloy containing more than 90% titanium.

Leatherman Charge TTi Titanium Multi-Tool

Weight: 8.2 ounces (232 grams)
Titanium Type: Alloyed Titanium Handles, S30V Stainless Steel Blades

The Charge TTi Titanium Multi-Tool by Leatherman is one of the few multi-tools that incorporates titanium into its construction. This tool has titanium handles and a titanium outer coating for extra strength, and a little bit less weight.

You can get the Charge TTi Titanium Multi-Tool on Amazon for about $150.

Schrade Titanium Keychain Pry Tool

Weight: 0.5 ounces (14 grams)
Titanium Type: 6AL-4V Titanium Alloy

This Titanium Key Chain Pry Tool by Schrade is made with solid 6AL-4V titanium — an alloy that is stronger than pure titanium (the exact chemical composition is: 6% aluminium, 4% vanadium, 0.25% iron, 0.2% oxygen, and the remainder titanium).

This is 6-in-One tool, it’s: a seal belt cutter, a bottle opener, a flat head screw driver, a wrench driver, a scraper, and a pry tool. It weighs just 0.5 ounces, and it’s 3.25″ long (8.2 cm).

Titanium Split Pea Lighter

Weight: 0.5 ounces (14.3 Grams)
Titanium Type: 6AL4V Series Titanium Grade 5 Alloy

The Titanium Split Pea Lighter can be used as an candle in an emergency and carried on your keychain. A removable lighter insert allows it to be used as a waterproof titanium pill vial. It sells for $30 from County Comm.

Titanium Split Ring

Titanium split ring can be used as the ultralight base of a keychain. You can find titanium split rings at the County Comm Store (3 for $6) or Berkeley Point ($5 – $6 each).

Titanium Money Clip

Weight: 1 ounce (28 grams)
Titanium Type: Pure Titanium

Weighing one ounce, this Titanium Money Clip is a lightweight version of the usual stainless steel money clip. It’s available on Amazon for about $50.

Arc AAA Titanium Keychain Flashlight

Weight: 0.95 ounces (including battery)
Titanium Type: 6Al-4V (Ti-64) Titanium Alloy

Designed for keychains, Arc-AAA flashlights are barely larger than the AAA batteries they contain. The exact dimension are: 2.5 inches in length, 0.5 inches in diameter, and 0.95 ounces in weight (including battery). The Arc-AAA is made in Phoenix, Arizona by Arc Flashlights. The company only makes keychain-sized flashlights, and put a lot of attention into the design of their lights (see the FAQ page for all the technical details).

The three titanium models range in price from $125 to $140.

The post 10 Titanium Pocket Tools appeared first on Reactual.