Cartridge Removal specifications for the Doulton Imperial Ultra Carb 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
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 &
Dibromo chloromethane) 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 les than
CFU/ML denotes Colony Forming Unit per milliliter
mg/L denotes milligram per Liter
ug/L denotes microgram per Liter