Now the quality of peptone in the market determines the price of peptone, then how to identify its quality? Is a lot of consumers want to know a knowledge, we can detect from two aspects.
First, peptone solubility test is to weigh two grams and ten grams of dry peptone, added to 100 ml of distilled or deionized water to prepare a 2%, 10% solution, good quality peptone solution should be clear and transparent, no precipitation, color Judgment points colorless, yellowish, light yellow, yellow, dark yellow, brown.
Second, the peptone pH measurement is to weigh two grams of peptone in 100 ml of distilled water or deionized water, heated to completely dissolve to make a 2% solution, measure its pH value, good quality peptone range should be ph5. 5-7.5.
Therefore, attention in the purchase of the above two points can be very good to distinguish its quality, want to buy desirable peptone must not be covet cheap, otherwise the consequences could be disastrous.
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