Laboratory Filter Paper: The Difference Between Qualitative and Quantitative Filter Paper
Laboratory filter papers come in various types depending on their intended use. However, two of the most popular types today are qualitative and quantitative filter papers. In this article, let’s explore the differences between these two types of filter papers.
Qualitative Laboratory Filter Paper
Qualitative filter papers are mainly used in important fields to separate impurities from liquids and air for material identification. With a range of combinations in terms of particle retention ratio, thickness, and weight, they are commonly used in qualitative analytical techniques both inside and outside the laboratory.
Moreover, qualitative filter paper does not offer the same level of precipitate recovery. The ash-free layers can be incinerated for analytical applications, making qualitative filter paper suitable for general-purpose use.
Additionally, the filtration speed of this type of filter paper is influenced by technical parameters and can range from very slow to very fast. For qualitative filter papers, the amount of ash produced after incineration is no more than 0.13%.
Quantitative Laboratory Filter Paper
Quantitative filter paper is one of the most popular laboratory tools today. This is because it is designed to filter at an extremely high speed, specifically for coarse precipitates and gelatinous colloids. To differentiate between ash-free and low-ash layers, the filter paper is burned at 900°C in the air to identify the ash-free and low-ash layers. Moreover, it can withstand acids and alkalis and is effective for filtering crystalline precipitates.
Thus, quantitative filter paper is mainly used for quantitative analysis and weighing applications or for filtering under pressure or vacuum.
What is Laboratory Filter Paper and Why Should You Use It?
Differences Between Qualitative and Quantitative Laboratory Filter Paper
1. Purpose of Use:
The first difference between qualitative and quantitative filter paper lies in their intended purpose. Quantitative filter paper is used for weighing and analyzing in weight-based experiments. Its main role is to measure and analyze experiments that require filtration after incineration. The weight of the ash on each filter is a fixed value for the normal filtering function.
On the other hand, qualitative filter paper is used for qualitative chemical analysis and separation. It is used to filter solutions where the numerical value of the test, such as chloride or sulfate, is not needed. Unlike quantitative filter paper, which is used for precise measurements, qualitative filter paper is used for general filtering purposes.
2. Ash Content After Incineration:
The second main difference is in the amount of ash left after incineration. Qualitative filter paper has an ash content of no more than 0.13%, while quantitative filter paper has an ash content of no more than 0.0009%. Ash-free filter paper is a type of quantitative filter paper with an ash content of less than 0.1mg, a weight that can be disregarded in the analysis residue.
Furthermore, quantitative filter paper generally has a high wet strength, making it suitable for pressure and vacuum filtration. On the other hand, qualitative filter paper typically has a relatively low wet strength, although laboratory filter papers are increasingly being enhanced for qualitative analyses.
3. Pore Size and Filtration Speed:
According to certain industry sources, qualitative filter paper has a faster filtration rate due to its larger fiber pores. In contrast, quantitative filter paper has smaller fiber pores, which retain all materials on the paper, making it slower in filtration.
Laboratory Filter Paper: The Difference Between Qualitative and Quantitative Filter Paper
Laboratory filter papers come in various types depending on their intended use. However, two of the most popular types today are qualitative and quantitative filter papers. In this article, let’s explore the differences between these two types of filter papers.
Qualitative Laboratory Filter Paper
Qualitative filter papers are mainly used in important fields to separate impurities from liquids and air for material identification. With a range of combinations in terms of particle retention ratio, thickness, and weight, they are commonly used in qualitative analytical techniques both inside and outside the laboratory.
Moreover, qualitative filter paper does not offer the same level of precipitate recovery. The ash-free layers can be incinerated for analytical applications, making qualitative filter paper suitable for general-purpose use.
Additionally, the filtration speed of this type of filter paper is influenced by technical parameters and can range from very slow to very fast. For qualitative filter papers, the amount of ash produced after incineration is no more than 0.13%.
Quantitative Laboratory Filter Paper
Quantitative filter paper is one of the most popular laboratory tools today. This is because it is designed to filter at an extremely high speed, specifically for coarse precipitates and gelatinous colloids. To differentiate between ash-free and low-ash layers, the filter paper is burned at 900°C in the air to identify the ash-free and low-ash layers. Moreover, it can withstand acids and alkalis and is effective for filtering crystalline precipitates.
Thus, quantitative filter paper is mainly used for quantitative analysis and weighing applications or for filtering under pressure or vacuum.
What is Laboratory Filter Paper and Why Should You Use It?
Differences Between Qualitative and Quantitative Laboratory Filter Paper
1. Purpose of Use:
The first difference between qualitative and quantitative filter paper lies in their intended purpose. Quantitative filter paper is used for weighing and analyzing in weight-based experiments. Its main role is to measure and analyze experiments that require filtration after incineration. The weight of the ash on each filter is a fixed value for the normal filtering function.
On the other hand, qualitative filter paper is used for qualitative chemical analysis and separation. It is used to filter solutions where the numerical value of the test, such as chloride or sulfate, is not needed. Unlike quantitative filter paper, which is used for precise measurements, qualitative filter paper is used for general filtering purposes.
2. Ash Content After Incineration:
The second main difference is in the amount of ash left after incineration. Qualitative filter paper has an ash content of no more than 0.13%, while quantitative filter paper has an ash content of no more than 0.0009%. Ash-free filter paper is a type of quantitative filter paper with an ash content of less than 0.1mg, a weight that can be disregarded in the analysis residue.
Furthermore, quantitative filter paper generally has a high wet strength, making it suitable for pressure and vacuum filtration. On the other hand, qualitative filter paper typically has a relatively low wet strength, although laboratory filter papers are increasingly being enhanced for qualitative analyses.
3. Pore Size and Filtration Speed:
According to certain industry sources, qualitative filter paper has a faster filtration rate due to its larger fiber pores. In contrast, quantitative filter paper has smaller fiber pores, which retain all materials on the paper, making it slower in filtration.
Conclusion
With the information provided above, we hope you can make an informed decision when choosing laboratory filter paper. Both types of filter papers have unique characteristics and properties, so a certain level of understanding is required when selecting the right paper for your needs. Remember to choose filter paper from reputable manufacturers such as Advantec (Japan), and avoid purchasing low-quality filter paper from China. Thank you for your interest and for using our products.
With the information provided above, we hope you can make an informed decision when choosing laboratory filter paper. Both types of filter papers have unique characteristics and properties, so a certain level of understanding is required when selecting the right paper for your needs. Remember to choose filter paper from reputable manufacturers such as Advantec (Japan), and avoid purchasing low-quality filter paper from China. Thank you for your interest and for using our products.
