Pill coating precautions
1 The amount of adhesive should be used for the first time and gradually decrease thereafter. Its concentration also began to thicken, and then gradually thinned. This makes the adhesion force strong and weak from the inside to the outside, so that the powder is firmly bonded to the pellet surface. Otherwise the back layer will pull the front layer down. At the same time, the amount of binder should be sufficient for the first time so that the core of the granules is fully wetted. Otherwise, when the blouse is dry, the granules will be broken due to the different degree of affixation and “shelling†phenomenon will occur. For example, using glutinous rice paste as the binder, the first amount can be up to 2/3.
2 After the jacket, the pellets must be dried at low temperature (preferably air-dried), and constantly turning; avoid exposure and high temperature baking, or easy to make the oil discoloration of the pill, the formation of yin and yang or inside and outside the two layers.
A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow. The modern ballcock was invented by José Antonio de Alzate y RamÃrez, a Mexican priest and scientist, who described the device in 1790 in the Gaceta de Literatura Méxicana.[1] It consists of a valve connected to a hollow sealed float by means of a lever, mounted near the top of the tank. The float is often ball-shaped, hence the name ballcock. The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow. This is an example of negative feedback and of proportional control.
Ball Cock, Brass Ball Bibcock, Ballcock Valve, Toilet Ballcock Valve
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