When taking liquid reagents, the caps of the reagent bottles should be turned upside down.
There are many types of chemical reagents, which are divided into solid reagents and liquid reagents according to their different forms. The nature of the reagents is different, some are flammable and explosive, and some are volatile. The reagent bottles used for different reagents and even the rules for the use of reagents are different. Among them, the use of liquid reagents follows the following points:[ Media Bottle,1l Media Bottle,Glass Media Bottles,Media Bottle Custom,Media Sterile Bottles,Glass Media Bottle 1000ml ]
1. Non-quantitative reagents: When taking more liquid reagents, follow the principle of “more pour less drops”. The cap of the reagent bottle must be placed upside down on the table to prevent the reagent from corroding the test bench or contaminating the reagent; when pouring directly, the mouth of the bottle must be close to the mouth of the test tube, the test tube is inclined at 45 degrees, and poured slowly; the label side must face the palm of the hand To prevent the reagent from spilling out of the corrosive label; after pouring the liquid, immediately close the bottle cap and put the bottle back in the original place with the label facing the outside for easy observation.[ Media Bottle,1l Media Bottle,Glass Media Bottles,Media Bottle Custom,Media Sterile Bottles,Glass Media Bottle 1000ml ]
2. A small amount of reagents: a small amount of liquid reagents need to use a glue-tip dropper. It should be dripped directly above the container; the glue-tip dropper should not touch the container wall to prevent staining the test tube or contaminating the reagent; the dropper after taking the liquid should keep the rubber cap on it, not square or inverted, to prevent the liquid from flowing back and contaminating Reagents or corrosive rubber caps; used test tubes should be rinsed with clean water immediately, but the dropper on the dropper bottle cannot be rinsed with water, nor can it be used interchangeably.
3. Quantitative reagent: a graduated cylinder is required to take a quantitative liquid reagent. When the pouring liquid in the vector cylinder is close to the required scale, stop the pouring, and use the rubber tip dropper to drip the reagent to the required scale line for the remaining part; the measuring cylinder must be placed smoothly when reading, and the line of sight is kept at the lowest point of the concave liquid surface of the liquid in the measuring cylinder. level. (Note: The reading is too large when looking down, and the reading is small when looking up.)
The above are the rules for the use of liquid reagents. For different amounts of liquid reagents, the tools and methods used will be slightly different, but all need to be noted. After opening the reagent bottle, the bottle cap should be placed on the laboratory bench to prevent Pollution.
Post time: Oct-25-2021
