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You might be familiar with the term “ppm,” if you work in a science lab. However, many people would have no clue what it means beside guessing that it is a type of unit. When you meet the label written “β-GLUCAN 5000 ppm” on JKosmmune serum, I’m sure many of you feel puzzled. Then, what does “ppm” stand for? What does it mean? Is it important to know?   “ppm” is a short word of parts per million. It is...
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