*Layman's tests to check purity of milk*

*कैसे पहचानें कि घर में रोजाना लिया जाने वाला दूध असली है या नकली?* (See below)

1. To test the adulteration of water in milk, place one or two drops of milk on a wood or stone. If milk flows down and leaves a white mark then the milk is completely pure.

2.To identify adulteration of detergent in milk, stir some amount of milk in a glass tumbler and stir it well. Presence of detergent if the foam starts coming out in milk. If this foam persists for long, there is no doubt about the duplication of milk.

3. Smell the milk. If the milk is fake, it will smell like soap.

4. Rubbing the milk in both hands. If the milk is fake, then it will feel the same glitter as if it is by rubbing the detergent.

5. Keeping milk long, real milk does not change its color. While the milk is fake, then it will start to get pale after some time.

6. Boiling of real milk will not change its color at all, but the color of fake milk will be become yellow on boiling.

7. If the urea is mixed in milk, then it becomes thick yellow.

8. In the case of taste, the real milk is lightly sweet, while the taste of fake milk becomes bitter due to the combination of detergent and soda.

1 सबसे पहले दूध में पानी की मिलावट को परखने के लिए किसी लकड़ी या पत्थर पर दूध की एक या दो बूंद गिराइए। अगर दूध बहकर नीचे की तरफ गिरे और सफेद निशान बन जाए तो दूध पूरी तरह से शुद्ध है।

2 दूध में डिटर्जेंट की मिलावट को पहचानने के लिए, दूध की कुछ मात्रा को एक कांच की शीशी में लेकर जोर से हिलाइए। अगर दूध में झाग निकलने लगे तो इस दूध में डिटरर्जेंट मिला हुआ है। अगर यह झाग देर तक बना रहे, तो दूध के नकली होने में कोई संशय नही है।

3 दूध को सूंघकर देखें। अगर दूध नकली है, तो उसमें साबुन की तरह गंध आएगी, और अगर दूध असली है, तो उसमें इस तरह की गंध नहीं आती।

4 दूध को दोनों हाथों में लेकर रगड़कर देखें। अगर दूध असली है, तो सामान्य तौर पर चिकनाहट महसूस नहीं होगी। लेकिन अगर दूध नकली है, तो इसे रगड़ने पर बिल्कुल वैसी ही चिकनाहट महसूस होगी, जैसी कि डिटर्जेंट को रगड़ने पर होती है।

5 दूध को देर तक रखने पर, असली दूध अपना रंग नहीं बदलता है। जबकि दूध अगर नकली है, तो वह कुछ समय बाद पीला पड़ने लगेगा।

6 असली दूध को उबालने पर उसका रंग बिल्कुल नहीं बदलेगा, लेकिन नकली दूध का रंग उबलने पर पीला हो जाएगा।
7 सिंथेटिक दूध में अगर यूरिया मिला हुआ है, तो वह गाढ़े पीले रंग का हो जाता है।

8 स्वाद के मामले में असली दूध हल्का-सा मीठा स्वाद लिए हुए होता है, जबकि नकली दूध का स्वाद डिटर्जेंट और सोडा मिला होने की वजह से कड़वा हो जाता है। more  

View all 7 comments Below 7 comments
The test suggested are very simple and can be carried out at home by anybody. It does not require any special device. Thanks for the information. more  
Good information. Keep it up. more  
Very useful. Thank you. more  
Good and useful information. Thanks. more  
Very simple and logically true test. I appreciate. more  
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