Leukocytes recognize unique molecules on pathogens
Taste it
Sudan III is used to detect the presence of lipids.
M8 paper
biuret reagent
M8 paper
to detect the presence of liquid nerve and blister agents to detect the presence of liquid nerve and blister agents
One of the ways you can detect the presence of a magnetic field is by the use of a magnetic proximity sensor. They are non-contact proximity devices that are used to detect magnetic objects.
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To detect the presence of CI- ion, add silver nitrate solution. A white opalescence to cloudy precipitate of silver chloride will form and confirm the presence of CI- ion.
To detect the presence of CI- ion, add silver nitrate solution. A white opalescence to cloudy precipitate of silver chloride will form and confirm the presence of CI- ion.
The presence of halide ions
an electroscope
PH test
Sudan III is used to detect the presence of lipids.
Biosensors can be made to detect almost anything. You could design a biosensor to detect a non-pathogenic bacteria but there would be few people who would want to buy it.
When they can smell blood in the water.
Gas chromatography.