The seasoning packaging bottle sealing tester is an important equipment to ensure the freshness and safety of seasonings

 during storage, transportation, and sales. Seasoning packaging bottle sealing tester, also known as packaging leakage 

detector or sealing tester, is an instrument specifically used to test the sealing performance of seasoning packaging 

bottles. It evaluates the sealing performance of packaging bottles by simulating changes in external environmental 

pressure or vacuum conditions, ensuring that seasonings will not deteriorate due to packaging leaks.

Working principle of sealing tester

The working principle of the seasoning packaging bottle sealing tester is mainly based on two testing methods: 

positive pressure method and negative pressure method.

1. Positive pressure method: By filling the interior of the packaging bottle with a certain pressure of gas (such as 

compressed air), and then observing the change in pressure of the packaging after maintaining it for a certain 

period of time. If the packaging is well sealed, the internal pressure should remain stable; If the sealing is poor, 

gas will leak through the gaps, causing a pressure drop. This method instrument (such as Paratronix LT-03A positive 

pressure sealing instrument) is suitable for quantitatively detecting the sealing performance of packaging products 

such as packaging bags, glass bottles, and plastic bottles. It can also be used to detect the sealing strength, peel 

strength, etc. of bottle caps.

Testing instruments:LT-03A Leak and seal strength tester

2. Negative pressure method: Place the packaging bottle in a vacuum environment and observe whether the 

packaging undergoes deformation or gas leakage under negative pressure conditions. In a vacuum state, if the 

packaging is not tightly sealed, external air will enter the interior of the packaging through gaps, causing the 

packaging to expand or leak. This method of sealing tester (such as Paratronix LT-02P sealing tester) is particularly 

effective for detecting flexible packaging materials, such as plastic bags, aluminum foil bags, etc. For seasoning 

packaging bottles, negative pressure sealing testers are more commonly used.

Testing instruments:LT-02P Leak Tester

Equipment characteristics of sealing tester

High precision sensor: Using high-precision pressure sensors, it can accurately measure the pressure difference inside

 and outside the packaging, ensuring the accuracy of the test results.

Intelligent control: Equipped with advanced microprocessor control system, it can automatically complete the testing 

process, including inflation, pressure holding, detection, exhaust and other steps, to improve testing efficiency.

Multiple testing modes: Supports positive pressure testing, negative pressure testing, and multiple custom testing

 modes to meet the testing needs of different packaging materials and products.

Data recording and analysis: With data storage and export functions, it can record the data of each test, analyze it 

through software, generate test reports, and facilitate quality traceability and improvement.

Easy to operate: Humanized design, user-friendly interface, operators only need simple training to get started, reducing 

the threshold for use.

Application field

The seasoning packaging bottle sealing tester is widely used in industries such as food, pharmaceuticals, and daily 

chemical products, especially playing a crucial role in the food industry. It can not only be used to test the sealing 

performance of seasoning packaging, but also to test the sealing effect of various packaging materials, including 

glass bottles, plastic bottles, metal cans, etc.

Importance of application

Ensuring food safety: Packaging with good sealing can effectively prevent seasoning from being penetrated by external 

substances such as oxygen and moisture during storage and transportation, thereby maintaining the freshness and 

quality of seasoning and preventing food spoilage and contamination.

Improving product quality: By testing the sealing performance of packaging, companies can promptly identify and 

solve potential problems during the packaging process, such as air and liquid leaks, ensuring the overall quality of 

seasonings.

Optimize packaging selection: In the seasoning packaging design stage, by using a sealing tester to test the sealing 

performance of different materials, enterprises can choose packaging materials that are suitable for product characteristics, 

thereby improving the market competitiveness of their products.

In summary, the seasoning packaging bottle sealing tester is an important tool for ensuring food quality and safety, and 

plays an irreplaceable role in the food industry.