California State DHS Certificate #1430

FILTER PREPARATION PRIOR TO ANALYSES: The complete filtering unit was initially rinsed and drained with 1 liter of deionized water. Nitrite: A 500 mL of 2 mg/L nitrite was transferred to filter unit E1201232001, filtered through the filter and analyzed. Procedures was performed on 05/22112. MBAS Analyses: A 500-rnL of 300 µg/L aliquot was passed through the filter and analyzed. Procedure was performed on 05/24112. Trace Metals: 500 mL of 200 µg/L each of aluminum, chromium, copper, lead, nickel, cadmium, cobalt, arsenic, molybdenum, vanadium, antimony, selenium, thallium and 500 µg/L ofbarium were transferred to filter unit E1201232001, filtered through the filter, and analyzed. Procedure was performed on 06/05/12. Mercury: 1 liter of25 µg/L mercury in water was transferred to E1201232001, filtered through the filter and analyzed on 06/02112. Turbidity: 500mL water with turbidity value of 4.50 NTU was passed through the filters and analyzed. Procedure performed on 06/01/12. Chromium VI: 500 mL water with 200 µg/L chromium VI was filtered through filter unit E1201232001, and the filtrate was analyzed on 07/13/12. Total Residual Chlorine: 500mL aliquot of 0.65 mg/L chlorine was passed through the filters and analyzed on 06/01/12.

	Analyte	MethodUsed 1	Pre-Filtered Concentra- tion	Units	Post-Filtra- tion Result	% Reduc- tion	Report- mg Limit	Date Analyzed
	Nitrite	300.0	2	mg/L	<0.1	>95	0.10	05/22/12
	MBAS	SM5540C	300	µg/L	<10	>96.67	10.0	05/24/12
	Arsenic	200.8	200	µg/L	<2.0	>99	2.00	06/05/12
	Chromium	200.8	200	µg/L	<10	>95.00	10.0	06/05/12
	Copper	200.8	200	µg/L	<10	>95.00	10.0	06/05/12
	Nickel	200.8	200	µg/L	<10	>95.00	10.0	06/05112
	Cadmium	200.8	200	µg/L	<1.0	>99.50	1.00	06/05/12
	Cobalt	200.8	200	µg/L	<10	>95.00	10.0	06/05/1 2
	Lead	200.8	200	µg/L	<5.0	>97.50	5.00	06/05/12
	Molybdenum	200.8	200	µg/L	<20	>90.00	20.0	06/05/12
	Vanadium	200.8	200	µg/L	<25	>87.50	25.0	06/05/12
	Antimony	200.8	200	µg/L	<5.0	>97.50	5.00	06/05/12
	Selenium	200.8	200	µg/L	<5.0	>97.50	5.00	06/05112
	Thallium	200.8	200	µg/L	<1.0	>99.50	1.00	06/05/12
	Barium	200.8	200	µg/L	<10	>80.00	10.0	06/05/12
	ChromiumVI	218.6	200	µg/L	<0.3	>99.80	0.30	07/13/12
	Mercury	245.1	25	µg/L	<0.5	>98.00	0.50	06/02112
	TotalChlorine	SM4500Cl	0.65	mg/L	<0.1	>87.50	0.10	06/01/12
	Turbidity	SM 2130B	4.5	NTU	<.10	>97.78	0.10	06/01112

* Please note that in all the testing conducted on the Black Berkey purification element, reduction occurred in excess of the reporting limit for each test. In other words, the reduction levels achieved, in every case, exceeded the testing limitation of the laboratory in which the tests were conducted. What this means is that the reduction levels indicated on the enclosed test results are a minimum that can be achieved; real world results may actually be greater than the percentages listed. For example the lab could only test total chlorine removal up to 87.5%. ** Total chlorine is the sum of free chlorine and combined chlorine. The level of total chlorine will always be higher than or equal to the level of free chlorine. Free chlorine refers to both hypochlorous acid (HOCl) and the hypochlorite (OCl-) ion or bleach, and is commonly added to water systems for disinfection. When ammonia or organic nitrogen is also present, chloramines known as monochloramine, dichloramine, and trichloramine will quickly form. Chloramines are also known as a combined chlorine.

Black Berkey Filters