1
2
3
4




Contamination
When bacterial growth is present, the grains will become darker and begin to look milky and wet.
Contamination
When bacterial growth is present, the grains will become darker and begin to look milky and wet.
Contamination
When bacterial growth is present, the grains will become darker and begin to look milky and wet.
Contamination
When bacterial growth is present, the grains will become darker and begin to look milky and wet.