1. colour
The color of the toilet and the bathtub and washbasin must be the same, and the color should not be deeper than the floor tiles. The hue should be coordinated with the wall tiles.
2. quality
The glazed surface of the toilet shall be clean and smooth. There shall be no obvious defects in the color and crystals. There shall be no pinholes and lack of glaze. After the toilet will deliver crisp and sweet sound, no cracking sounds, no cracks, trademarks shall be clear, and all kinds of accessories shall be complete. , No deformation, etc.
3. Outlet
When the water outlet of the toilet is for drainage, the distance from the center of the outlet to the wall behind the tank should be measured. Otherwise, the toilet cannot be installed. The outlet of the horizontal drainage toilet shall be equal to the height of the horizontal outlet, preferably slightly higher, in order to ensure the flow of sewage.
4. Water saving
As water bills gradually increase, water saving performance becomes increasingly important. The size of the water tank does not indicate whether it is water-saving or not, but whether the design of the flushing drainage system and the water tank fitting in the toilet structure is reasonable and whether the quality passes. General toilets should be marked with the amount of flushing, the following 6 liters of water can be classified as water-saving toilet.
5. Three sets of supporting sanitary ware are required to be provided, and related faucets should also be combined with the bathtub faucet and wash basin faucet. The brand is the same, and the style is the same. If the conditions permit, the towel rack should also be the same type as the faucet.
Flooring Bathtub Tile Faucet Bathroom Design Bathroom Wall Tiles Bathroom Washbasin Bathroom Tiles
The cover glass is covered on the material on the glass slide, which can avoid the contact between the liquid and the objective lens, so as not to contaminate the lens, and can make the top of the observed cells in the same plane, that is, the distance from the objective lens is the same, so that the observed Images are clearer.Why do you need a coverslip when using a microscope
1. Make the object to be observed form a thin film, which is easy to transmit light and easy to observe;2. Make the specimen relatively fixed;
3. It is convenient to use the capillary phenomenon to form a gradient when adding various reagents (staining agent, acid, salt solution);
4. Avoid contamination of the specimen.
The purpose of staining the specimen with iodine solution is to make the cells more obvious under the microscope, and it can also kill the cells and prevent the cells from migrating.
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