Household Water Treatment and Safe Storage Factsheet: Source ...

Household Water Treatment and Safe Storage
Product Sheet: Guardian Solid Form Biocide
(SFB) Rope
Storage:
Maintenance:
Cleaning is recommended if the Guardian SFB Rope is stored
for more than a year without use.
Clean every 4 months if the water source has low turbidity, total
dissolved solids (TDS) and hardness. However, when hardness
is higher than 400 ppm and TDS is higher than 600 ppm, it is
recommended to clean every 3 months. If turbidity is higher than
30 NTU, the Guardian SFB Rope needs to be cleaned every 2
months.
To clean, soak the Guardian SFB Rope in cleaning solution for 1
hour. To make the cleaning solution, use the juice of 1 lemon or
3 grams vitamin C powder or 4 tablespoons vinegar per 1 litre of
water. Then rinse the Guardian SFB Rope with non-turbid water,
and return to use.
Treatment Efficiency*
Bacteria Viruses Protozoa Helminths Turbidity Chemicals
Laboratory 99.9999% 1 99.9999% 3 0% 0% 0% 0%
Field 99.9999% 2 N/A 0% 0% 0% 0%
* Efficiency depends on contact time and water conditions. These results are after 90 minutes and the initial water
conditions were: pH= 6.3, Turbidity= 0.4 NTU, hardness= 284mg/L TDS= 360 mg/L and fluoride= 0.35 mg/L. Data
provided by H2O, Inc.
1 E.coli removal. Tested by EMS Lab in India, reported by H2O, Inc.
2
Tested in the field by Oxfam, reported by H20 Inc. These results are after 120-360 minutes contact time for three
different water sources and stirring every 30 minutes.
3
Colipaghe-MS2 removal. Tested by EMS Lab in India, reported by H2O, Inc.
N/A: Not available
Further Information
H2O Water Solutions Inc.
760 Hobart Street
Menlo Park, CA 94025 USA
Tel: 1.650.325.5321
Website: www.htwentyinc.com
(Credit: www.htwentyinc.com)
CAWST (Centre for Affordable Water and Sanitation Technology)
Wellness through Water.... Empowering People Globally
Calgary, Alberta, Canada
Website: www.cawst.org
Email: cawst@cawst.org
Last Update: April 2011