Glycerin test for bonic acid for milk

Since less than 0.5 per cent boric acid in milk would not serve the purpose of effectively delaying the growth of bacteria, this flame test method would be useful, as it is both time saving and reliable. To 5 cc. of milk, add 0.2 cc. of lactic acid.

Explanation:

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b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.