FILTERKING 125 mm Grade 1A Filter Paper

FILTERKING filter paper with a diameter of 125 mm is used in various laboratory and industrial applications for filtering liquids and solids. Here’s a detailed overview of this filter paper:

### **Key Features:**

1. **Diameter and Size:**
– **125 mm Diameter:** This size is suitable for small to medium filtration tasks. The 125 mm diameter allows it to fit into various funnel sizes and filtration apparatus.

2. **Material:**
– **Cellulose or Synthetic Fibers:** Most filter papers are made from high-quality cellulose, but some are made from synthetic materials to suit specific needs. Cellulose filter paper is commonly used for general-purpose filtration, while synthetic options may offer higher resistance to chemicals or heat.

3. **Porosity and Filtration Quality:**
– **Grades and Types:** Filter papers come in different grades depending on their porosity and the particle size they can effectively filter. Common grades include coarse, medium, and fine, as well as specialized types like quantitative or qualitative.
– **Retention Rate:** The filter paper’s ability to retain particles of specific sizes depends on its grade. Fine grades have a higher retention rate for smaller particles.

4. **Applications:**
– **General Filtration:** Suitable for separating solids from liquids in various laboratory processes.
– **Precipitate Analysis:** Useful in analytical chemistry for filtering precipitates.
– **Sample Preparation:** Used in preparation of samples for further analysis or testing.

5. **Chemical and Temperature Resistance:**
– **Chemical Compatibility:** Some filter papers are designed to be resistant to certain chemicals, making them suitable for specific applications.
– **Temperature Tolerance:** Most filter papers have a moderate temperature tolerance, but they should not be exposed to high temperatures beyond their specifications.

### **Usage Tips:**

1. **Selecting the Right Grade:**
– **Choose Based on Need:** Select the grade of filter paper based on the type of particles you need to filter out and the clarity required for your filtrate.
– **Compatibility:** Ensure that the filter paper is compatible with the chemicals or solvents you are working with.

2. **Proper Handling:**
– **Avoid Contamination:** Handle filter paper with clean tools or gloves to avoid contamination of the sample.
– **Correct Placement:** Ensure the filter paper fits properly into the funnel or filter holder to prevent bypass of the liquid around the edges.

3. **Disposal:**
– **Proper Disposal:** Dispose of used filter paper according to your laboratory’s waste disposal guidelines, especially if it has been in contact with hazardous materials.

### **Example Brands and Types:**

– **FILTERKING:** Known for producing a range of high-quality filter papers suitable for various applications.