Метод гравитационной колбы — это простой и широко используемый метод измерения плотности объекта.. It calculates the density of an object by comparing the mass ratio and density of the object with water. Однако, the specific gravity bottle method also has some errors, mainly including the following aspects:

Ошибка температуры: The accuracy of the gravity bottle method is affected by temperature. Чем выше температура, the smaller the density of the liquid, resulting in increased error. Поэтому, when measuring by gravity bottle method, attention should be paid to keeping the ambient temperature stable to avoid the influence of temperature on the measurement results.

Ошибка точности: The accuracy of the gravity bottle method is affected by the accuracy of the instrument and reading. If the bottle is not made and the reading is not accurate enough, or if the balance is not accurate enough, the error will increase.

Solubility error: If the sample and water are not completely mixed, part of the substance can not be completely dissolved in the water, thus affecting the accuracy of the measurement results.

Bubble error: When the sample is loaded into the specific gravity bottle, if the bubble is not completely removed, it will afError in density measurement by gravity bottle methodfect the measurement results.

Ошибка измерения плотности методом гравитационного баллона

In order to reduce the error of the gravity bottle method, могут быть приняты следующие меры:

Контроль температуры: Keep the ambient temperature stable as far as possible to avoid the influence of temperature on the measurement results during the specific gravity bottle measurement.

Improve accuracy: The use of high precision, accurate reading of the specific gravity bottle and balance, can reduce the instrument error and reading error.

Dissolve the sample: The sample is fully dissolved in water to reduce the solubility error.

Bubble removal: the specific gravity bottle is fully cleaned, and before the sample is loaded into the specific gravity bottle, the specific gravity bottle is fully shaken to eliminate the bubble, which can reduce the bubble error.