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Cartridge Contaminants Removal Specifications for the Doulton Imperial Ultracarb Ceramic Cartridge
Capacity: 3,800 litres

The Hong Kong Standards and Testing Centre
Date 2001-07-20 NO HC109730

METHOD(S) USED:
1. The submitted Doulton Heavy duty Twin Undersink Drinking Water System was flushed for 15 minutes with distilled water to remove any loose particles.

Other Doulton system tests
2. Samples of synthetic water with pre-determined level of bacteria (E.coli), residual chlorine; metals (iron, lead, manganese, cadmium, copper, mercury, aluminium & zinc), and Trihalomethane (THM) (Bromodichloromethane, Bromoform, Chloroform &
Dibromochloromethane) were prepared.
3. The prepared synthetic water was allowed to run through the submitted water filter and the effluent from the filter was collected.
4. The contents of all effluent were determined with reference to
(a) APHA 18ed 9215A & B
(b) HACH Colorimetry
(c) APHA 20ed 3120B
(d) Purge & Trap Technicue followed by Gas Chromatographic/Mass Selector Detector

TEST RESULTS
  Before filtering After filtering % reduction
(a) Count of Escherichia coli
836,000 CFU/ML
0 CFU/ml
100%
(b) Residual Chlorine Content
56 mg/L
<0.05 mg/L
99.9
(c) Metals      
  - Iron
10.23 mg/L
<0.01 mg/L
99.9
  - Lead
10.14 mg/L
<0.01 mg/L
99.9
  - Manganese
10.24 mg/L
<0.01 mg/L
99.9
  - Cadmium
9.782 mg/L
<0.001 mg/L
99.9
  - Copper
9.681 mg/L
<0.01 mg/L
99.9
  - Mercury
10.06 mg/L
<0.01 mg/L
99.9
  - Aluminium
9.856 mg/L
0.10 mg/L
99
  - Zinc
10.13 mg/L
<0.01 mg/L
99.9
(d) Trihalomethane (THM)      
  - Bromodichloromethane
93 ug/L
<0.5 ug/L
99.5
  - Bromoform
100 ug/L
<0.5 ug/L
99.5
  - Chloroform
100 ug/L
<0.5 ug/L
99.5
  - Dibromochloromethane
95 ug/L
<0.5 ug/L
99.5

NOTES:
< denotes less than
CFU/ML denotes Colony Forming Unit per milliliter
mg/L denotes milligram per Liter
ug/L denotes microgram per Liter

This test data cannot be used for products sold in United States.

Contaminants Removal Specifications for the Doulton Imperial Ultracarb

Live cysts test at University of Arizona US   Live cysts test at Water Research Council (WRc) UK   E.coli test   NSF standard 42 particulate US   NSF standard 42 chlorine US   NSF standard 53 turbidity US   NSF standard 53 lead US   Salmonella typhi, shigella dysenteriae and vibrio cholerae Inaba bacteria test UK   Pesticides and herbicides test UK   E.coli, heavy metals and THM's test Hong Kong   Serratia marcescens and escherichia coli bacteria test UK

*ANSI/NSF Standard 42, Drinking Water Treatment Units–Aesthetic Effects
**ANSI/NSF Standard 53, Drinking Water Treatment Units–Health Effects

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