“…The quantitation limit of an individual analytical procedure is the lowest amount of analyte in a sample which can be quantitatively determined with suitable precision and accuracy. The quantitation limit is a parameter of quantitative assays for low levels of compounds in sample matrices, and is used particularly for the determination of impurities and/or degradation products…” REFERENCE: […]
If you have used your elements: The method of storage depends upon the length of time that the Black Berkey® Elements will not be used: If the filters will not be used between 4 to 15 days and you want to avoid the re-priming process, remove the filters from the system, place them into a […]
NSF certifications are not required but rather optional. In our opinion, NSF certifications are limited in their application with respect to our gravity fed filtration elements. NSF Standard 42 (aesthetic effects) and Standard 53 (health effects) would specifically apply to our filtration elements. NSF Standard 42 covers systems “designed to reduce specific aesthetic or non-health-related […]
The thread size on the stem of the Black Berkey® Elements is 11 mm. The outer diameter is about 3/8 of an inch and the inner is about 2/8 of an inch.
The washers are made of food grade Neoprene Rubber. However, keep in mind that the washers never touch the filtered water.
Petroleum based products are some of the easiest to remove from water. The Black Berkey® Elements have been tested to reduce the following petroleum contaminants up to 99.9%: Gasoline Diesel Crude Oil Kerosene Mineral Spirits Refine Oil For complete lab results on the Black Berkey® Elements, click here However, please keep in mind that it […]
It is our understanding that Lithium is an alkali metal, found in Group 1 of the Periodic Table. Lithium can be very reactive when exposed to water. Current testing of this potential contaminant has not been conducted, at this time.
When water is filtered through our system, the Black Berkey® Elements increase the PH level of the water. This is healthful because waterborne pathogens thrive in acidic environments and have difficulty surviving in alkaline environments. An environment with more alkalinity does have a higher PH level. The PH level will depend on various factors including […]
NMCL’s most recent laboratory testing indicates that the Black Berkey® Elements reduce Arsenic up to 99.9%. Typically carbon based elements that reduce Arsenic begin to lose that ability rather quickly. This is likely the case with Black Berkey® Elements, which means that their efficiency at removing Arsenic likely plays out long before the 3,000-gallon life […]
We determine the typical lifespan of the Black Berkey® Elements by their ability to reduce heavy metals. The breakthrough of heavy minerals can occur at about 3,000 gallons. Heavy metals can leach through beyond 3,000 gallons. However, the elements can be used beyond that point because other reductions continue well beyond 3,000 gallons.