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Liquidity – PATH C1 compliant purification cartridge

Pleated filters with 0.2 µm nano-fiber membrane & virus media


Liquidity nanofiber 0.2 µm membrane


Liquidity purification cartridge for the PATH C1


Safe water for households anywhere.

Liquidity Nanotech Corporation’s water purification cartridge for the PATH C1 counter-top embodiment has superior flow rate, microbiological retention, and ease of use. It meets the U.S. EPA standard for microbial reduction. Liquidity’s revolutionary 0.2 µm equivalent electro-spun nano-fiber membrane creates a cartridge with dramatically higher flow rates than other filtration, while still achieving the highest purification standards. The high flow rate, about a cup per minute, dramatically improves the user experience. Moreover, as the cartridge is a mechanical filter, it has a safe end of life and will not allow bacteria and protozoa to pass at any time.

This cartridge is ideally suited for domestic use in off-grid environments or where electricity or water pressure is unreliable. Liquidity has taken advantage of the “open source” water purifier embodiment offered by the international health organization, PATH. Originally designed by PATH via a grant from the Gates Foundation, the PATH C1 counter-top water purifier embodiment is an attractive low-cost in-home product. Liquidity has customized our revolutionary filtration technology to fit this system.

Features and Benefits


  • Achieves EPA standard microbiological removal performance at gravity-pressure: 6-log bacteria reduction, 4-log virus reduction and 6-log cyst reduction
  • Complies with WHO criteria for highly protective
  • Complies with US EPA drinking water standards
  • Does not use chemicals (chlorine, iodine, bromine) in any way
  • Award winning technology

User friendly

  • The most practical, user friendly gravity-fed water purifier available
  • High flow rate – get a cup of water in about 1 minute. Unique nano-fiber membrane creates much higher flow compared to existing technologies
  • Does not require batteries, electricity or water pressure and has no moving parts
  • Very little maintenance. Comes with disposable pre-filter wraps that are typically replaced every 1 to 2 months to extend life of system
  • No back-flushing required, as is common with hollow-fiber based devices
  • Up to 1500 liter capacity per cartridge in standard water conditions – sufficient for ~6 months of usage for a household
  • 250 -150 ml/min depending on water head height
  • Easy to install replacement cartridge


  • Safe end of life – always produces potable water. The product functions until the membrane becomes blocked, shutting off the flow of water through the filter
  • All materials meet US FDA food grade standards
PATH C1 schematic

How it works

Liquidity Nanotech Corporation’s water purification cartridge uses the revolutionary nano-fiber membrane to physically block bacteria, protozoan cysts and other contaminants. The membrane’s unique structure, which is ~85% open space, allows for fast flow of water, while still trapping contaminants. This process is called “size exclusion”. Liquidity has created a unique material for use in the fight against waterborne illnesses. There is no other product as practical and user-friendly.

  1. Fill the upper basin with unpurified water.
  2. Water passes through the prefilter removing larger particles before it reaches the purification cartridge
  3. Inside the purification cartridge Liquidity’s filtration media removes bacteria, virus and cysts.
  4. The water can be drank as soon as it accumulates in the lower basin
  5. The sediment filter will require occasional replacement. A slowing flow rate will indicate when a replacement is needed.
That’s it! No pumping, scrubbing or backwashing is required

Product Specifications

Liquidity purification cartridge for the PATH C1

Characteristic Metric
Bacteria reduction (LRV of E.Coli) 6 (99.9999%)
Cyst reduction (LRV as per microsphere test) 6 (99.9999%)
Virus reduction (LRV of MS2 bacteriophage ) 4 (99.99%)
Flow rate (max/median) 250/150 ml/min

PATH C1 embodiment by PureEasy

Characteristic Metric
Capacity 14 L (6.5 upper basin/7.5 lower basin)
Dimensions when assembled 25x25x60 cm
Box packing size 28x28x38 cm
Weight in box ~2.4 kg
Product number C1‐Device‐PE‐HF‐5210
  • Intuitive unidirectional assembly builds end-user confidence and ensures proper and safe assembly.
  • Height and mouth size are optimized to provide ease of filling and cleaning.
  • Holds enough water to serve a family of five between fillings.
  • Stand height allows a cup to be filled easily from the tap.
  • Round corners allow for ease of cleaning with fingers.
  • Textured surface finish reduces scratching despite scrubbing and other wear.
  • No electricity or running water required.

Ordering Information

Please contact Liquidity at info@liquico.com. We are currently accepting expressions of interest from potential partners and plan to begin supplying systems in 2015. Cartridge and purifier embodiment can be provided ‘white label’ allowing your organization to brand the device as desired.

Lead time ~4 months after receipt of purchase order and pre-payment
Minimum order quantity 1,000 units
Cartridge price $5/cartridge and accompanying filtration system
PATH C1 embodiment Can be provided by Liquidity or sourced directly from PureEasy – price varies by volume
Incotermsx ExWorks
Packaging Cartridge plastic wrapped, bulk boxes. Can be packaged inside of PATH C1 boxes upon request
Payment terms 50% down-payment on initial order. Payment upon receipt of BoL or letter of credit