Identification of bean cake Bean cake (粕) is often mixed with silt, stone flour or ground corn. The method of identification is as follows:
Take 25 grams of bean cake (粕), and soak it in a glass filled with 250 ml of water for 2-3 hours. Then stir gently with a wooden stick. If you are adulterated, you can see the delamination and the upper layer is the bean cake (粕). The lower layer is sediment.
Take a small amount of bean cake (粕) in a clean white porcelain dish, spread it flat and place a few drops of iodine on it. After 1 minute, if some of the material turns blue-black, it may be mixed with corn and bran. Skin, rice husks and other things.
Insert the hand into a pile of bran and then withdraw. If there is a white powder sticking on the finger and it is not easy to shake off, it means that talcum powder is added. If it is shaken off easily, it is residual flour. Grab a handful of bran and rub it hard. If it is easy to clump, it will be bran; if it has a feeling of rising, it may be mixed with rice bran.
Bone powder is a good bone powder with 25% calcium and 13% phosphorus. Adulterated bone meal often contains insufficient phosphorus, which can easily cause livestock and poultry. Non-degummed bone powder is prone to spoilage and often causes poisoning in livestock and poultry. Fake bone meal is often mixed with stone powder, shell powder, fine sand and other debris.
Pure bone powder is grayish white powder or granules, some of the particles are honeycombed and emit an inherent odor; adulterated bone meal has little or no honeycomb particles; bone powder and shell powder are blanched.
The bone powder is poured into dilute hydrochloric acid solution. If it is a pure bone powder, a short “sand” sound will be emitted. The surface of the bone powder particles will not generate bubbles. Finally, all of them will dissolve and the solution will be cloudy. The surface of the hydrochloric acid solution of the degummed bone meal floats with a very small amount of organic matter. There were more surface floats on steamed bone powder and bone powder, and there was no chemical phenomenon in bone powder.
Take a little bone meal into a test tube and put it on fire to burn it. Pure bone meal produces steam and produces a pungent burned hair odor. The adulterated bone meal produces less steam and odor. The bone meal does not have steam and odor. Metamorphic bone meal smells. The identification of methionine Some commercial methionine due to the incorporation of pseudo-starch, glucose powder, powder and other impurities and amino acid content of only 50%, much lower than the national standards.
True methionine is pure white or slightly yellow, is a shiny crystal, slightly sweet taste; false yellow or gray, very few flash crystals, strange smell, astringent.
One porcelain crucible was taken, 1 g of methionine was added, carbonized in an electric furnace, and then burned on a 55° C. muffle furnace for 1 hour. The residue remaining after burning of the real methionine should be less than 0.5%.
Take a 250 ml beaker, add 50 ml of distilled water, add 1 g of methionine, and gently stir with a glass rod. The false methionine is not completely soluble in water, and the true methionine is almost completely soluble in water.

Bulb Camera

What is a smart bulb WiFi camera? The monitor, which looks like a light bulb, is commonly used for home security monitoring. The shape of the bulb is diverse, but it can not be separated from the combination of nuts. Directly connect the nut to achieve 24-hour continuous monitoring, power off free, 360 degree panoramic monitoring. Smart home bulb WiFi camera with night vision function can also see clear images in the dark night
What is the purpose of smart bulb WiFi camera?
1. The panoramic 360 degree VR monitor can monitor the whole room by installing a light bulb in one room. There is no dead angle and video can be viewed in multiple modes.
2. Smart bulb WiFi camera can be used for lighting. Even though it is a household monitor, its basic lighting functions are well protected. The voice control light on mode and the app manual light on mode are very convenient for operation.
3. Two way voice intercom function. The smart home bulb monitor has its own microphone, which can listen to and play audio. Through calling on the APP, wireless WiFi transmission is directly realized, and then played through the bulb microphone. Its role is to directly communicate with family members, and the other is to intimidate the invasion of illegal elements.
4. As a monitor, it is locally stored in the memory card, plus the backup protection of the cloud disk. Even if someone destroys the camera or even takes away the home surveillance camera, the smart home bulb WiFi camera can still view relevant videos in the cloud disk.
How to use the smart bulb WiFi camera?
Scan the QR code on the mobile phone to download the corresponding APP software, and search the corresponding software name in the app store on the iPhone.
Power on the WiFi camera of the smart home bulb, search for the WiFi hotspot signal sent by the bulb in the phone settings, and click Connect.
Open the mobile phone APP and search the camera online. This process is automatically completed. Just wait.
Configure the local WiFi name in the APP settings, fill in the password, and remote monitoring can be realized after the configuration is successful.

Bulb Camera,WiFi Mini Bulb Camera, Auto Tracking Bulb Camera ,Security CCTV Bulb Camera

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