There are several types of scales and balances for different needs. A precision balance scale is used for exact mass measurement. Its accuracy is not affected by gravity, unlike spring scales. One such precision scale is the analytical balance or a chemical balance, which is a high-precision beam balance used in quantitative chemical analysis.
Pocket scales are small portable scales used by jewelers and chemists to weigh fine items and powders in circumstances where a laboratory scale is not available.
Gram scales measure the weight of an item in grams instead of ounces, pounds or kilos. A beam balance is composed of a level with two equal arms and a pan suspended from each arm while an ordinary balance is a scale for weighing that is affected by gravitational pull.
An analytical balance is very sensitive. It can measure the mass of a single grain of substance. It should be used in a draft-free environment and placed on a solid bench or table that is free of vibrations.
When you need exact weight measurements, then you need a precision balance scale. Let us see the steps in using a precision balance scale in a laboratory setting.
- Before you weigh anything on an analytical balance, it has to be tared or recalibrated to read 0.0000 g. Press and release the Tare button to recalibrate.
- Make sure that you do not bump the balance once you have done your recalibration.
- Chemicals and other substances to be weighed should be placed on paper or dishes.