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MSR Water Filter Review: Why It’s a Must-Have for Outdoor Enthusiasts

20/10/24
Edmund
Written By: Edmund Yeo
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You need to stay hydrated when you’re outside and MSR water filters give you clean, taste-free water from questionable sources.

These compact, proven devices remove bacteria, protozoa, and even viruses so they’re perfect for frequent and heavy use while hiking, camping, or traveling.

The Guardian Purifier and MiniWorks EX Microfilter have a carbon core to remove unpleasant tastes and odors caused by organic compounds.

If you need field maintainable water filtration MSR has filters that can be cleaned and renewed multiple times so you can have proven reliable performance in remote areas.

Some models have a cartridge replacement indicator so you’ll know when it’s time for a new filter to stay at peak performance.

Filtration speed is key and options like the TrailShot have a min flow rate of one liter per minute. MSR filters are built for demanding environments so full filter recovery and durability with no tools required for maintenance.

Tested under NSF protocol MSR filters meet high standards of safety so you can trust them for long-term filtration. The Airspring Accumulator in some models maintains constant pressure for fast filtering of large amounts of water.

What Is a MSR Water Filter?

MSR water filters are devices that clean water for outdoor enthusiasts. They remove harmful microorganisms and contaminants to make water safe for drinking.

Types of MSR Water Filters

MSR offers several types of water filters:

  1. Pump filters: You manually pump water through the filter.

  2. Gravity filters: Water flows through the filter using gravity.

  3. Squeeze filters: You squeeze a bag to push water through the filter.

Each type has its own strengths. Pump filters are versatile and work well in shallow water sources. Gravity filters are great for groups. Squeeze filters are lightweight and compact.

Principle of Operation

MSR water filters work by forcing water through tiny pores. These pores are so small that they trap bacteria, protozoa, and other harmful microorganisms.

The filters use different materials to catch contaminants:

  • Hollow fiber membranes

  • Ceramic elements

  • Activated carbon

As you pump, squeeze, or let gravity do the work, clean water comes out the other side. Some MSR filters also use chemical treatments to kill viruses.

The Science Behind The Technology

MSR filters use advanced materials science to clean water. The pore sizes in MSR filters are typically 0.2 microns or smaller. This is tiny enough to catch most bacteria and protozoa.

Some MSR purifiers go even further. They can remove viruses, which are much smaller than bacteria. These use even tinier pores or add chemical treatments.

The filters also often include activated carbon. This helps remove bad tastes, odors, and some chemicals from the water. It's the same technology used in many home water filters.

Benefits of Using MSR Water Filters

MSR Thru-Link Inline Water Filter

MSR water filters offer great advantages for outdoor enthusiasts. They help you stay hydrated safely while exploring nature.

Portability and Convenience

MSR filters are designed for easy carrying on your adventures. The MSR TrailShot is small and lightweight, fitting easily in your backpack. You can quickly filter water from streams or lakes without heavy equipment.

Many MSR filters have simple pump mechanisms. This lets you fill your water bottle quickly when you're thirsty on the trail. Some models even work with hydration bladders for hands-free drinking while hiking.

MSR offers different filter sizes to match your needs. Choose a compact one for solo trips or a larger model for group camping.

Effectiveness in Water Purification

MSR filters remove harmful bacteria and protozoa from water sources. This keeps you safe from waterborne illnesses during your outdoor activities.

The MiniWorks EX Microfilter uses carbon and ceramic elements. These materials clean water thoroughly, removing bad tastes and odors too.

Some MSR filters, like the Guardian series, also protect against viruses. This extra level of filtration is great for international travel or areas with very poor water quality.

MSR designs their filters to last. With proper care, you can trust your MSR filter for many trips to come.

How to Use an MSR Water Filter?

MSR water filters are easy to use and maintain. They provide clean, safe drinking water when you're outdoors. Here's what you need to know to get started.

Setup and Preparation

To set up your MSR water filter, first find a water source like a stream or lake. Take out the filter and remove any protective caps. Attach the input hose to the bottom of the filter. Place the other end of the hose into the water source.

Next, attach the output hose to the top of the filter. Put the free end of this hose into your water bottle or container. Make sure all connections are tight to prevent leaks.

Before you start pumping, prime the filter by pumping a few times until water flows through. This removes any air bubbles. Now you're ready to filter water!

Maintenance and Cleaning

Regular cleaning keeps your MSR filter working well. After each use, backflush the filter to remove debris. Do this by reversing the flow of water through the filter.

Disassemble the filter and clean all parts with clean water. Don't use soap. Let everything air dry completely before storing.

Check the ceramic element for cracks or chips. If damaged, replace it. You can also scrub the ceramic element gently with the provided cleaning pad to remove buildup.

Store your filter in a clean, dry place. Before long trips, test your filter to make sure it's working properly.

Selecting the Right MSR Water Filter

MSR TrailShot

MSR offers several water filter options for outdoor activities. Choosing the right one depends on your specific needs and usage.

Let's explore the key factors to consider when picking an MSR water filter.

Considerations for Different Activities

For backpacking trips, you might want a lightweight option like the MSR TrailShot. It's compact and allows you to drink directly from water sources.

If you're camping with a group, consider a gravity filter system. These can process larger volumes of water with less effort.

For international travel or areas with questionable water quality, look into purifiers that remove viruses as well as bacteria and protozoa.

Think about the water sources you'll encounter. Will you be dealing with clear streams or muddy water? Some filters handle particulates better than others.

Filter Longevity and Replacement

MSR filters have different lifespans based on their design and capacity. Check the product specifications to see how many liters a filter can process before needing replacement.

Replacement cartridges are available for many MSR filters. This can extend the life of your water treatment system.

Regular cleaning and maintenance will help your filter last longer. Follow the manufacturer's instructions for backflushing and storage.

Keep in mind that extremely silty or contaminated water can shorten a filter's lifespan. You might need to replace cartridges more often in these conditions.

Consider carrying a backup method, like purification tablets, in case your filter fails or clogs during a trip.

Environmental Impact and Sustainability

MSR water filters offer eco-friendly options for clean drinking water. They help reduce plastic waste from bottled water and have a smaller environmental footprint than many alternatives.

Recycling and Disposal

When your MSR water filter reaches the end of its life, you have a few options. Many parts can be recycled or reused. The plastic housing can often go in your regular recycling bin. Check with your local recycling center for specific guidelines.

For the filter cartridge, MSR offers a take-back program. You can send used cartridges back to the company for proper disposal. This ensures the materials are handled responsibly.

Some MSR filters use activated carbon. You can repurpose this in your garden as a soil amendment. It helps improve water retention and adds nutrients to the soil.

When buying a new filter, look for models with replaceable cartridges. This reduces waste compared to disposable filters. You'll save money in the long run too.

Remember to clean and dry your filter thoroughly before disposal. This prevents any harmful bacteria from spreading. With proper care, your MSR filter can last for years before needing replacement.

MSR vs Other Brands

When you're looking for a water filter, MSR offers some great options. Let's see how they stack up against other brands.

MSR filters are known for their reliability. The MSR TrailShot is lightweight and easy to use. It weighs less than half a pound, making it perfect for backpacking trips.

Other popular brands include Sawyer and LifeStraw. Here's a quick comparison:

BrandWeightFlow RateFilter Life
MSR TrailShot5 oz1 L/min2000 L
Sawyer Squeeze3 oz1.7 L/min378,541 L
LifeStraw Flex2 oz1 L/min2000 L

MSR filters stand out for their durability and ease of maintenance. You can clean them in the field without special tools.

The MSR MiniWorks EX is another great option. It removes chemicals, bacteria, and protozoa from water.

MSR also offers gravity filters for group use. These are perfect for base camps or larger groups.

When choosing a filter, think about your needs. MSR filters are great for backpackers who want reliable, easy-to-use products.

Top 5 MSR Water Filters to Consider

When you're looking for a reliable water filter for your outdoor adventures, MSR offers some great options. Here are five top MSR water filters to check out:

MSR Guardian Water Purifier

MSR Guardian Purifier

$354.90
This filter is a powerhouse. It removes viruses, bacteria, and protozoa. The Guardian is fast and easy to use, pumping 2.5 liters per minute. It's self-cleaning too, which is super convenient.

User reviews: Many hikers praise its durability and effectiveness.

Pros

Removes viruses, bacteria, protozoa, and sediment using medical-grade hollow fiber technology without the need for chemicals or boiling.
It features a self-cleaning system that maintains a fast flow rate by flushing out contaminants automatically with every pump.
Built for extreme durability and can purify up to 10,000 liters of water, making it suitable for long-term use in rugged conditions.

Cons

More expensive than most other portable purifiers due to its advanced technology and durability.
Weighing 17.3 oz, it’s bulkier and heavier than many alternative purifiers, which could be a drawback for ultralight backpackers.
Purifying water requires manual pumping, which can be physically tiring, especially when treating large volumes of water.
MSR Hyperflow Microfilter

MSR HyperFlow

$354.90
If you want something lightweight, this might be your pick. It weighs only 7.8 oz and pumps over 3 liters per minute. It removes bacteria and protozoa but not viruses.

User reviews: Users love its compact size and quick filtering speed.

Pros

Delivers a fast flow rate of up to 3 liters per minute, making it efficient for filtering large amounts of water quickly.
Weighing only 7.8 oz (221 grams), it’s one of the lightest and most compact microfilters available, ideal for ultralight backpacking.
User-friendly design with simple maintenance, including a tool-free cartridge replacement and easy backflushing to maintain flow rate.

Cons

The microfilter can clog relatively quickly in murky water, requiring frequent backflushing to maintain its flow rate.
Its filter cartridge has a shorter lifespan, purifying up to 1,000 liters of water before needing replacement, which is lower than some other models.
Unlike purifiers, the HyperFlow Microfilter does not filter out viruses, requiring additional treatment in areas with viral contamination risks.
MSR TrailShot

MSR TrailShot

$57.28
This little filter is perfect for quick drinks on the go. It's small enough to fit in your pocket and lets you drink directly from water sources. It filters out bacteria and protozoa.

User reviews: Hikers appreciate its portability and ease of use.

Pros

Weighs only 5.4 oz (153 grams), making it extremely light and compact for easy packing and carrying.
Squeeze-pump mechanism allows for one-handed operation, making it convenient for quick hydration on the go.
Drink directly from the source using the filter, which eliminates the need for extra containers in ultralight setups.

Cons

Filters water at a slower rate of about 1 liter per minute, which can be tedious when purifying larger amounts of water.
Can clog quickly in dirty water, requiring frequent cleaning to maintain efficiency, especially in murky conditions.
Designed more for personal use and doesn’t handle high volumes well, making it less ideal for group use or extended trips.
MSR AutoFlow XL10L Gravity Filter

MSR AutoFlow XL Gravity Filter

$57.28
Ideal for groups or base camps, the AutoFlow XL is a gravity filter system that can filter up to 10 liters at a time. It’s easy to set up—just fill the reservoir, hang it up, and let gravity do the work. It removes bacteria and protozoa, and it's perfect for camping trips where you need to filter large amounts of water with minimal effort.

User reviews: Campers love the convenience and high water capacity.

Pros

Filter up to 10 liters of water at a time, making it ideal for groups or extended stays in the backcountry.
Uses a gravity-fed system, which means no manual pumping is required, providing hands-free filtration with minimal effort.
Despite its large capacity, it maintains a fast flow rate of up to 1.75 liters per minute, allowing quick access to clean water.

Cons

Its large size and 10-liter capacity may be overkill for solo travelers or those needing less water, adding unnecessary bulk to a pack.
May require frequent backflushing to maintain the flow rate, particularly in areas with silty or dirty water sources.
Like many filters, it does not remove viruses, so additional purification methods are needed in areas with viral contamination risks.
MSR MiniWorks EX Water Filter

MSR MiniWorks EX Microfilter

$119.95
Known for its rugged durability, the MiniWorks EX Microfilter is a popular choice for backpackers. It uses a combination of ceramic and carbon to remove bacteria, protozoa, and unpleasant tastes. It's field maintainable and can be cleaned repeatedly for full filter recovery in demanding environments.

User reviews: Backpackers appreciate its durability and the ability to maintain it in the field.

Pros

Built for durability, capable of filtering up to 2,000 liters of water before needing a filter replacement.
Effectively removes bacteria, protozoa, and particulates, ensuring safe drinking water in most backcountry environments.
Ceramic filter is easily cleanable in the field, allowing you to maintain its flow rate without needing replacement parts.

Cons

Requires manual pumping, which can be time-consuming and tiring, especially for filtering large quantities of water.
Slower flow rate of about 1 liter per minute, making it less efficient compared to faster models.
Does not filter out viruses, requiring additional purification in areas with viral contamination risks.

Final Thoughts

The MSR water filters we've looked at are solid choices for outdoor enthusiasts. They offer reliable water purification for your adventures.

You've seen how these filters remove bacteria, protozoa, and even some viruses. The ceramic and carbon elements work hard to give you clean, safe drinking water.

Ease of use is a big plus with MSR filters. Whether you prefer gravity systems or hand pumps, there's an option that fits your style.

Durability is another key feature. These filters are built to last through many trips. With proper care, your MSR filter can treat thousands of liters.

Think about your own water filtering needs. How often do you go camping or hiking? What water sources do you usually encounter? Does your current method meet all your needs?

Consider the weight and size of your gear too. Would a compact filter like the MiniWorks EX fit better in your pack?

Lastly, ponder the peace of mind these filters provide. How would it feel to drink confidently from streams and lakes on your next trip?

FAQs

How often should you clean an MSR water filter?
You should clean your MSR water filter after each trip. For tough cleaning jobs, you can use baking soda and lemon juice to remove buildup.
Can MSR filters remove chemicals from water?
Some MSR filters have a carbon component that reduces certain chemicals like pesticides and herbicides. But they won't protect you from high chemical concentrations or heavy metals.
Are MSR filters effective against viruses?
Most MSR filters remove bacteria and protozoa, but not viruses. If you need virus protection, try the MSR Guardian purifier, which removes viruses too.
How do you clean an MSR filter in the field?
You can clean your filter in the field by gently shaking it in clean water to loosen particles. Use a soft brush to remove stubborn dirt if needed.
Can you use an MSR filter with hydration bladders?
Yes, many MSR filters like the MiniWorks EX are compatible with wide-mouth water bottles and hydration bladders from brands like Nalgene and MSR.
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