6. Pour one or more buckets of water through
the Diffuser Plate until the water flowing from
the transparent hose runs clear
(usually less than 20 liters or 5 gallons).
Checking Flow Rate
1. Flow Rate: To ensure the flow rate does not
exceed .8 liters per minute, replace the Diffuser Plate and fill the
filter to the rim with water. Put a 1-liter container at the end of the
transparent hose to collect the water. Use a watch with a second
hand to count out 60 seconds and collect the water for that
entire time. At the end of 60 seconds, you should have collected
between .4 and .8 liters (400-800 ml). If you collect between .4
and .8 liters, your filter is working properly. If you collect more
than .9 liters, contact Triple Quest at 616.254.4114.
2. Depth Measure: When the filter is at rest (i.e. no water is being
filtered), remove the Diffuser Plate and measure the depth of the
standing water. There should be almost 5 cm (2 inches) of water
above the Filtration Sand.
Clean Water Storage Container
A container of approximately 20 liters (5 gal.) size is ideal. Avoid larger
containers that cause weight-related handling issues and safe storage
considerations. Note: Water weighs about 1 kg per liter (8 pounds per
gallon). A suitable storage container should meet the following criteria:
1. Be easy to clean
2. Be used exclusively for filtered water
3. Have a secure cover with a small opening to fill with post-filtered,
clean water (optional)
4. Have a handle for carrying convenience (optional)
5. Have a spigot or faucet for sanitation and convenience (optional)
Refrigerate or chlorinate post-filtered water if possible. Both help
protect post-filtered water from recontamination.
Note: A clean storage container is part of an overall sanitation
and hygiene program. For more information, see www.hydraid.org.
Using The Hydraid
®
Biosand Water Filter
Your filter is a living system. The biological layer must be fed with at
least 15 liters (3 gal.) of water every other day to insure it remains alive
6
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