THE FOLLOWING IS THE TEST METHOD AS PROVIDED BY BCS:
Triple Clear Grades: Force Field TM Filter with Silver and Force Field TM Filter with Carbon and Silver Lot: 201584 and 201477 BCS ID: 1402057 and 1404218 Challenge started on 11/4/2014, by: GL KN Water Type: 35 Gallons Reverse Osmosis Water, filter: iSpring RCB4T & Carbon Chlorine: None, method: ortho tol. Initial pH: 5.65, adjusted to: 6.78 by: 1N NaOH approximate Volume: 2ml Lot: 111913 Test: Heavy metals: Arsenic, Barium, Cadmium, Chromium +6, Copper, Iron, Lead, Selenium, and Silver. Samples sent to TestAmerica Tampa for analysis. Other: 60ml CPI Heavy Metal Spike 1000ppm (lot: 14H027), 0.16 grams copper sulfate pentahydrate (lot: E4265A1) Study date:11/4/2014, start: 12:00 Samples were taken at 1L, 10L, and 15L 60ml CPI Heavy Metal Spike 1000ppm (lot: 14H027), 0.16 grams copper sulfate pentahydrate (lot: E4265A1) was added to 35 Gallons of Reagent Laboratory Grade water (RO). The water was homogenized and pH was adjusted to 6.0 +/- 0.5, and an influent sample was collected for analysis. Filters were cut out and secured into metal filter holders. The challenge water was then passed through each of the filters. Peristaltic pumps were set at 140 ml/min and flow rate was measured to be 130-135 ml/min. Samples were taken at 1L, 10L and at 15L. Pressure began to increase dramatically from 1L to 10L. At 1L pressure was measured at an average of 1.4 psi, at 10L pressure spiked to 14.0 psi. Study was discontinued at 15L because pressure of system surpassed 20.0 psi. Flow rate and pressure for the volume collected was recorded by validated measuring devices. Filters’ influent and effluent samples were sent out to TestAmerica Tampa for analysis. All analysis was conducted, at minimum, in duplicates. Data Table 1. Metals that were significantly reduced by Force Field TM Filter media and the percent reduction at the terminal sample point (15 Liters).
Percent Reduction of Metals by Force Field TM Filter
Silver
Carbon and Silver
Chromium VI
99.5%
99.5%
Copper
98.1%
98.1%
Iron
87.2%
87.2%
Lead
99.5%
99.5%
Selenium
85.9%
81.7%
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