SolarBag disinfects chemical contamination in drinking water via a nanotechnology-coated mesh, which is activated by the sun. The SolarBag is compact in size and relatively lightweight making it suitable to ship to areas of humanitarian need.
Distributors / Implementing Organizations
Puralytics Many organizations (Amazon, Brownells, Camping World, Columbia Fire and Safety Ltd., L.L. Bean, REI, Sportsman's Warehouse, Woot, Sportsman's Guide) also offer the SolarBag for purchase.
Intellectural Property Type
User Provision Model
The SolarBag is available for purchase online. During humanitarian crises, NGOs/nonprofits and governmental agencies can order in bulk from Puralytics. End-user is likely to receive as donations.
Distributions to Date Status
<50,000 (targeted 50,000 by end of 2015) Interview with representative
Description of the combined methods
Manufacturer-specified water treatment rate (L/hr)
3 L, 2-6 hr treatment
Heavy metals and/or arsenic reduction
Yes, reduction rate unknown
Maximum recommended influent turbidity level (NTU)
Effluent turbidity levels (NTU)
Safe water storage capacity (L)
Manufacturer-specified lifetime volume (L)
Bag dimensions: Total Height: 39.9 cm, Total Width: 24.5 cm, Bag Height: 36.6 cm, Weight: 104 g, Capacity: 3.5 L The SolarBag is filled with water, and set horizontally in the sun for 2-6 hours depending on both water quality and weather conditions.
FAQ section on Solarbag's website
Unknown. Since the product handles contaminated water, any defects will most likely compromise the product and require the product to be disposed of.
Manufacturer Specified Performance Parameters
Removes the following from water: Bacteria, Viruses, Protozoa, Herbicides, Pesticides, Herbicides, Petrochemicals, Pharmaceuticals, Arsenic, Lead, and Mercury. The self-cleaning mesh does not clog, and the water tastes clean after disinfection. Eliminates 99.9999% of bacteria, 99.99% virus, 99.9% protozoa, removes heavy metals, and destroys man-made chemicals.
Vetted Performance Status
92% of SolarBags functioned normally throughout the first 6 months of trial use. 77% were fully functional even after 6 months.
SolarBag is unsafe if there is a leak or the activated mesh is compromised. If water is highly turbid or contains sediment, filtering the water or allowing sedimentation to occur will improve the resulting water quality. Saline waters need to be desalinated in conjunction with the use of the SolarBag, as it will not remove salt.
Complementary Technical Systems
For overcast days, the SolarBag comes with Pur-Blue Process Timer, a blue indicator dye that turns clear once the water has been purified. A single drop per bag indicates whether water is ready for drinking.
Academic Research and References
David E. Reisner and T. Pradeep, 2015, Aquananotechnology Global Prospects. CRC Press Taylor & Francis Group.
Naranjo, J.E., Gerba, C.P., 2000, Microbiological water purification without the use of chemical disinfection. Wilderness Environ Med. 11(1), pp. 12-16.
Owen, M.D., Hawkins, T., 2015, Light-activated nanotechnology for drinking water purification. Aquananotechnology: Global Prospects. CRC Press.
Burleson, G.E., 2016, Water treatment technologies for the developing world. Oregon State University: Corvallis, OR.
Byrne, J.A., et. al., 2015, A Review of heterogeneous photocatalysis for water and surface disinfection. Molecules, 20(4), pp. 5574-5615.
Compliance with regulations
Solarbag exceeds highest water quality testing standards from WHO and the EPA; meets National Standards in Turkey, Kenya, Cameroon, Japan, USA, Mexico, Malawi
Informational video about Solarbag