In fact, we tested the Berkey Light™ with the maximum pathogenic contamination levels that can be produced in a laboratory. When contamination levels exceed one billion pathogens per liter of water (10,000 times the density of contamination used in the standard test protocol for bacteriological removal) they become too numerous to count (TNTC). Such contamination levels are referred to as "lawn growth". Under normal testing protocol; one pathogenic organism is tested at a time. However, we had the laboratory mix together a soup of three separate pathogenic lawn growth cultures. We then tested the system under this extreme contamination level and absolutely no pathogens were able to make it through the purification elements. We then had the laboratory incubate the water and nothing grew. We then had them view the effluent (filtered water) under an electron microscope and not even in-viable (dead) microbes were detectable. Nothing was present but pure H₂O. You can print a copy of this test report by clicking on the Print Brochures button to the left and click on the "Black Berkey® LSU Report"

How the Berkey Light™ Operates
Berkey Light™ water purifiers are the most practical, user friendly and economical water purification systems available. To use, water is poured into the upper chamber. Gravity draws the water through the exclusive Black Berkey® purification elements. Contaminates are captured on and within the micro-porous purification elements and are separated from the water. The purified water then collects in the lower chamber where it can be drawn through the spigot. While in use, the system is joined together allowing the Berkey Light™ to be transported while it purifies water. This feature is useful when purified water is required in one location, such as in a food preparation area, and later in another location such as a dining area. There is no guesswork when refilling the system because the water level, in both chambers, is visible at all times. The elevated base raises the spigot level, allowing the Berkey Light™ to be utilized anywhere on a flat surface

The shatter resistant and virtually unbreakable Berkey Light™ is made of high impact strength Lexan® which, ounce for ounce, is stronger than steel. In fact, this is the material used for making bulletproof glass. The Berkey Light™ does not leach foul tasting plasticizers into your water and will not retain foul tastes and odors from waterborne contaminants.

The Berkey Light™ is so powerful it can be used to purify non-potable or unhealthy water in situations where electricity and water pressure are not available. For normal everyday situations or for hostile filtration environments, the Berkey Light™ is the most flexible and adaptable water filter available. The Berkey Light™ provides reliable, user friendly, powerful and economical water filtration and enhances the ambience of any environment