Digital pocket scales are primarily designed for measuring solid substances, such as dry ingredients, small objects, or items that can be placed on the scale's weighing platform. They are not typically designed for measuring liquid substances directly. Here's why:

Lack of Liquid Reservoir: Digital pocket scales lack a contained liquid reservoir, which is necessary for accurate liquid measurement. When you pour a liquid directly onto the scale's platform, it can spread, making it challenging to capture and measure the exact volume.

Risk of Damage: Liquids can seep into the internal components of the scale, potentially damaging the electronics and affecting the scale's accuracy or functionality.

Cleanup Difficulty: Cleaning up spilled liquids from a digital pocket scale can be problematic, and residual moisture may affect future measurements.

Safety Concerns: Pouring hot or corrosive liquids directly onto the scale can pose safety risks, both for the user and the scale.

If you need to measure liquid substances accurately, you should use specialized measuring tools designed for that purpose, such as graduated cylinders, beakers, or kitchen liquid measuring cups. These tools provide the necessary containment and measurement capabilities for liquids and are designed to prevent spillage.

However, you can use a digital pocket scale to indirectly measure liquid ingredients by employing a container. Here's how:

Place a container (e.g., a cup or beaker) on the scale's weighing platform.
Tare the scale to set it to zero with the empty container on it.
Carefully pour the liquid into the container until you reach the desired volume.
The scale will display the weight of the liquid, which can be converted to volume if you know the density of the liquid.
This method allows you to indirectly measure liquids accurately, provided you know the density of the liquid you're measuring. Keep in mind that using a container can add a small margin of error, so precision measurements may require specialized liquid measuring equipment.