资源 标记: Chlorine
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1971-01-01 It is the purpose of this booklet to suggest some ways of studying plants that may involve students more fully, especially in the design and development of elementary research suitable for school laboratories. Educational Products Division, LaMotte Chemical Products, Chestertown, MD 74 pages,...
- Washing fresh produce with potable water treated with a sanitizing agent can reduce microorganisms and pathogens that may be on the surface of the produce. These potential problems include post-harvest rot and decay microorganisms such as spoliage bacteria and yeast, Botrytis, penicillium and...