Lab Test Results Show How KDF Process Media Work in Water Treatment Processing for Bacteria Removal

Table 1- Testing Protocol

All water used for testing was deionized and injected with AOAC synthetic hard water to a final concentration of 100 ppm and a pH 7.0 +/-.2

Following collection, the samples were surface plated on Plate Count Agar within 2 to 3 minutes of collection and again after incubation at room temperature for 3 hours.

The same inoculums of Pseudomonas fluorescens was used for injection in to Samples 3 and 4 or for addition to Samples 1 and 2 (added after collection of the water).

Table 2- KDF Testing Results.

Experiment # (Date)	Sample #*	Time 0	Time 3 hours
I: 7-18-90	1	900	740
?	2	810	650
?	3	440	570
?	4	4	0
II: 7-19-00	1	1800	1600
?	2	1800	30
?	3	2100	1900
?	4	350	33
III: 7-21-90	1	580	460
?	2	580	31
?	3	650	330
?	4	390	0
IV: 7-23-90	1	740	630
?	2	740	180
?	3	770	470
?	4	360	42
Average:	1	1000	830
?	2	30	220
?	3	990	820
?	4	280	19

* Sample numbers are described in Table 1.

Table 3 - Chlorine removal by KDF.

Pump Rate Pulse per Minute	Calculated ppm Free Chlorine	Measured ppm (KDF Off)	Measured ppm KDF (On)
10	1.8	1.6	Less than .1
40	7.4	6.0	0.5
80	14.0	14.0	1.5
120	21.0	20.0	2.5