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Water testing & Pasteurization in Africa
1. Water testing & Pasteurization in Africa 
A guide to water testing in developing countries using a Portable Microbiology Laboratory, and how to pasteurize contaminated water using sunshine and a simple solar cooker.
5682 Visits
131 Images
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SODISheatchlorine
2. SODISheatchlorine  (July 18, 2011)
Water sources in Lower Nyakach, Kenya, are tested and treated by solar disinfection (SODIS), heat, and chlorine. Will these procedures make the water safe to drink?
453 Visits
83 Images
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Solar water pasteurization
3. Solar water pasteurization  (May, 2015)
The default recommendation to treat contaminated water is to boil it. However, as microbiologists know from milk pasteurization (161°F, 71°C, for only 15 seconds) boiling is heat far in excess of what is needed. Water will be pasteurized when heated to 149°F (65°C). A reusable, wax-based Water Pasteurization Indicator (WAPI) can verify that water has been pasteurized. Microbiology tests before and after heating verify the disease microbes have been killed.
167 Visits
21 Images
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watermicrohistory
4. watermicrohistory  (1987-2003)
History of water testing in developing countries using the Colilert 10 ml presence/absence test and the E. coli Count Petrifilm as test items of a Portable Microbiology Laboratory.
834 Visits
110 Images
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Water testing in Kenya, 2012
5. Water testing in Kenya, 2012  (July, 2012)
With the Friends of the Old (FOTO) staff in Lower Nyakach, Kenya, 51 local drinking water sources were tested using the Colilert and Petrifilm tests. Next day results indicated the high level of contamination of almost all sources.
67 Visits
14 Images
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How to make a Cookit solar cooker
6. How to make a Cookit solar cooker  (June, 2015)
It's easy to make a Cookit solar cooker from cardboard and 12 feet of aluminum foil. I've included the details of all steps that I use when leading workshops where many Cookits are made. To solar cook, place dark covered pot inside a clear plastic roasting bag. Solar water pasteurization doesn't require a clear plastic bag. Click on the 'start slideshow' above the first photo to view a slideshow.
77 Visits
38 Images
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Delft, Holland
7. Delft, Holland  (2012-2015)
Delft, Netherlands. In the 1670s, Delft citizen Anthony van Leeuwenhoek was the first person in history to develop microscopes powerful enough (~400 magnifications)to discover the microbial world for all of humanity. He was the first person to see bacteria, yeast, algae, red blood cells, protozoa. Come to Delft to honor Anthony.
630 Visits
78 Images
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Bio 139 Lab Practical #1
8. Bio 139 Lab Practical #1 
Photos from lab exercises covered on the first lab practical exam
5982 Visits
83 Images
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Bio 139 Lab Practical 2
9. Bio 139 Lab Practical 2 
Photos from lab exercises covered on the second lab practical exam
14666 Visits
85 Images
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WAPI waxes
10. WAPI waxes  (March 6, 2011)
Testing melting temperature of WAPI waxes
434 Visits
19 Images
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