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Views: 0 Author: Site Editor Publish Time: 2023-11-08 Origin: Site
measure scoops are widely used in laboratories of scientific research, colleges and universities, medical and health care, industrial and mining enterprises, etc., for measuring liquids of various volumes, or for volume calculation of irregular solid substances, and sometimes also used as a measuring cup. For glass cylinders or receptacles.
What should we pay attention to when using a measure scoop?
How to use measure scoop?
Do I need to wash it after pouring out the liquid from the measure scoop?
The measure scoop should be noted that the graduated cylinder cannot be used as a reaction vessel, and it cannot be heated, so as to avoid scratching the scale of the graduated cylinder during cleaning. When measuring, place the graduated cylinder on a flat table. When observing the scale, remember that the lowest part of the meniscus of the liquid in the graduated cylinder should be kept level with the line of sight, and then read the volume of the liquid. Otherwise, the number read may be high or low.
When to read the volume of liquid taken?
After injecting the liquid into the measure scoop, wait for 1 to 2 minutes to let the liquid adhering to the inner wall flow down, and then read the scale value. Otherwise, the read value is too small.
How to inject liquid into measure scoop?
When injecting liquid into the measure scoop, hold the measuring cylinder with the left hand, and make the measuring cylinder slightly inclined, and hold the reagent bottle with the right hand, so that the bottle mouth is close to the measuring cylinder mouth, so that the liquid flows slowly. When the amount to be injected is slightly less than the required amount, place the graduated cylinder flat, and use a rubber tip dropper to drop the required amount.
How to read the volume of liquid taken?
The measure scoop should be placed on a flat table. When observing the scale, the line of sight should be kept level with the lowest part of the concave liquid surface of the liquid in the measuring cylinder, and then the volume of the liquid taken should be read out. Otherwise, the reading will be high or low.
It depends on the specific situation. It is not necessary to rinse the measure scoop with water if it is only to make the measurement accurate, as the measure scoop has been manufactured with residual liquid in mind. Conversely, if flushing, the volume taken is larger. If the same measuring cylinder is used to measure other liquids, it must be rinsed with water to prevent contamination by impurities.
Note: measure scoop can generally only be used when the accuracy requirements are not very strict. It is usually used in qualitative analysis, and is generally not used in quantitative analysis, because the error of measure scoop is large. measure scoop generally does not need to be estimated, because the graduated cylinder is a coarse measuring device, but sometimes it is also necessary to estimate, such as the ammeter in the physical electrical measuring instrument, whether it is estimated or not is still inconclusive.
This is the information on the measure scoop. For more information, please connect Shanghai Gensyu Packaging Company Limited.
