---
product_id: 165270506
title: "Qualitative Filter Paper Circles, 56mm Diameter Cellulose Filter Paper with 20 Micron Particle Retention Medium Filtration Speed, Pack of 100"
brand: "stonylab"
price: "€ 29.35"
currency: EUR
in_stock: true
reviews_count: 13
category: "Stonylab"
url: https://www.desertcart.es/products/165270506-qualitative-filter-paper-circles-56mm-diameter-cellulose-filter-paper-20
store_origin: ES
region: Spain
---

# 56mm diameter precision 35-70 sec filtration speed 20 micron particle retention Qualitative Filter Paper Circles, 56mm Diameter Cellulose Filter Paper with 20 Micron Particle Retention Medium Filtration Speed, Pack of 100

**Brand:** stonylab
**Price:** € 29.35
**Availability:** ✅ In Stock

## Summary

> ⚡ Filter smarter, not harder — clarity and speed in every circle!

## Quick Answers

- **What is this?** Qualitative Filter Paper Circles, 56mm Diameter Cellulose Filter Paper with 20 Micron Particle Retention Medium Filtration Speed, Pack of 100 by stonylab
- **How much does it cost?** € 29.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/165270506-qualitative-filter-paper-circles-56mm-diameter-cellulose-filter-paper-20)

## Best For

- stonylab enthusiasts

## Why This Product

- Trusted stonylab brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Filtration Cycle:** Optimized cellulose matrix enables fast filtration within 35 to 70 seconds, accelerating your workflow.
- • **Low Ash Content for Purity:** Maintains ≤0.15% ash content to minimize contamination and preserve sample integrity.
- • **Precision Fit for Buchner Funnels:** Engineered 56mm diameter ensures seamless compatibility with StonyLab porcelain funnels for flawless filtration.
- • **Ultra-Selective Particle Retention:** Captures particles larger than 20 microns, delivering crystal-clear filtrates every time.
- • **Versatile & Cost-Effective Lab Essential:** Ideal for diverse applications from gold powder to organic solvents, combining performance with budget-friendly reliability.

## Overview

StonyLab Qualitative Filter Paper Circles (56mm) offer high-performance filtration with 20 micron particle retention and rapid 35-70 second filtration speed. Designed for compatibility with Buchner funnels, these low-ash cellulose filters ensure pure, efficient separation ideal for professional labs seeking reliable, cost-effective solutions.

## Description

Our Lab accessories are supplementary items designed to support and enhance laboratory work. Common examples include rubber stoppers, clamps, tubing, and stands, which are used to connect, secure, or stabilize laboratory equipment and setups. These accessories help ensure safe, efficient, and organized experimentation in scientific, educational, or research environments.

Review: Good product, will buy again - Filters worked very well. Filtered precipitated gold powder, it was very fine. Solution went in a brownish mud color, came out clear in the beaker after passing through the filter. It fit well, was true to its description.
Review: filter good ice cream also good..cigarettes bad - Buchner funnels are indispensable tools in chemistry laboratories, widely employed for vacuum filtration. One crucial component that enhances their efficiency is the paper filter. These filters play a pivotal role in the separation of solids from liquids, offering a range of benefits that significantly contribute to the success of various scientific experiments. Enhanced Filtration Efficiency One of the primary advantages of utilizing paper filters in Buchner funnels is the notable improvement in filtration efficiency. The porous structure of paper filters allows for the efficient retention of solid particles while facilitating the passage of liquid through the filter. This ensures a faster and more effective separation process, saving valuable time in the laboratory. Precise Particle Retention Paper filters exhibit a remarkable ability to retain particles of different sizes with precision. This is particularly important in experiments where the separation of specific particle sizes is critical. The controlled porosity of paper filters enables scientists to tailor their filtration processes according to the requirements of their experiments, ensuring accurate and reliable results. Reduced Risk of Contamination The use of paper filters in Buchner funnels helps minimize the risk of contamination in experimental samples. The high-quality materials used in manufacturing these filters, such as cellulose or glass microfiber, provide a clean and inert environment for the filtration process. This is especially crucial in sensitive experiments where even trace contaminants can skew results. Compatibility with a Variety of Substances Paper filters are versatile and compatible with a wide range of substances, making them suitable for diverse laboratory applications. Whether filtering aqueous solutions, organic solvents, or suspensions, paper filters exhibit stability and effectiveness across different chemical environments. This versatility makes them a go-to choice for scientists working with various substances in their research. Ease of Use and Convenience The simplicity of incorporating paper filters into Buchner funnels adds to their appeal. The filters are readily available, easy to handle, and require minimal preparation. This convenience not only streamlines laboratory procedures but also enhances the overall user experience. Researchers can focus on the scientific aspects of their work without being burdened by complicated filtration processes. Cost-Effectiveness From an economic standpoint, paper filters offer a cost-effective solution for laboratory filtration. Compared to some alternative filtration methods, the affordability of paper filters makes them an attractive choice for researchers working within budget constraints. This cost-effectiveness does not compromise the quality of results, making paper filters a practical and efficient option for a wide range of scientific applications. Conclusion In conclusion, the integration of paper filters into Buchner funnels brings about a myriad of benefits that significantly contribute to the success of laboratory experiments. From enhanced filtration efficiency and precise particle retention to reduced contamination risks and versatility across different substances, paper filters prove to be indispensable tools in the scientific toolkit. Their ease of use, cost-effectiveness, and overall convenience further underscore their importance in facilitating successful and reliable filtration processes in the realm of laboratory research.

## Features

- Filter paper diameter: 56mm
- Coarse cellulose filter papers remove particles > 20 µm
- Filtration Speed: 35 - 70 sec
- Ash content: ≤0.15%
- Compatible with StonyLab Porcelain Buchner Funnel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07R4WD8RC |
| Best Sellers Rank | #15,909 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Qualitative Lab Filter Paper |
| Date First Available | April 24, 2019 |
| Item Weight | 0.635 ounces |
| Item model number | SL000276 |
| Manufacturer | StonyLab Scientific |
| Product Dimensions | 2.2 x 2.2 x 0.79 inches |

## Product Details

- **Material:** Paper
- **Brand:** stonylab
- **Color:** 56mm Diameter
- **Capacity:** 100 Milliliters
- **Product Dimensions:** 2.2"W x 2.36"H

## Images

![Qualitative Filter Paper Circles, 56mm Diameter Cellulose Filter Paper with 20 Micron Particle Retention Medium Filtration Speed, Pack of 100 - Image 1](https://m.media-amazon.com/images/I/51PIgedeeSL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Do your 56mm filter paper fit a diameter outside: 50mm filtration flask?**
A: No _ I had to cut them down ; 50 mm papers seem hard to get 😞

**Q: Do you offer a filter paper to fit a 94 mm buchner that is a smaller micron than 20 ?**
A: Dear Customer,
Sorry, we currently only have filter papers that feature 20 Micron.
Thanks, Lizzy L

**Q: Are these food safe?**
A: Dear Customer,
The item is for laboratory use only.
Thanks, Lizzy L.

**Q: What is the temperature range they will work with and which solvents are compatible?**
A: For my purposes filtering will be done below freezing so wouldn't be much help as far as your question the range of working temp. It is not specified on packaging but filters seem solid

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product, will buy again
*by W***B on February 6, 2026*

Filters worked very well. Filtered precipitated gold powder, it was very fine. Solution went in a brownish mud color, came out clear in the beaker after passing through the filter. It fit well, was true to its description.

### ⭐⭐⭐⭐⭐ filter good ice cream also good..cigarettes bad
*by L***L on December 26, 2023*

Buchner funnels are indispensable tools in chemistry laboratories, widely employed for vacuum filtration. One crucial component that enhances their efficiency is the paper filter. These filters play a pivotal role in the separation of solids from liquids, offering a range of benefits that significantly contribute to the success of various scientific experiments. Enhanced Filtration Efficiency One of the primary advantages of utilizing paper filters in Buchner funnels is the notable improvement in filtration efficiency. The porous structure of paper filters allows for the efficient retention of solid particles while facilitating the passage of liquid through the filter. This ensures a faster and more effective separation process, saving valuable time in the laboratory. Precise Particle Retention Paper filters exhibit a remarkable ability to retain particles of different sizes with precision. This is particularly important in experiments where the separation of specific particle sizes is critical. The controlled porosity of paper filters enables scientists to tailor their filtration processes according to the requirements of their experiments, ensuring accurate and reliable results. Reduced Risk of Contamination The use of paper filters in Buchner funnels helps minimize the risk of contamination in experimental samples. The high-quality materials used in manufacturing these filters, such as cellulose or glass microfiber, provide a clean and inert environment for the filtration process. This is especially crucial in sensitive experiments where even trace contaminants can skew results. Compatibility with a Variety of Substances Paper filters are versatile and compatible with a wide range of substances, making them suitable for diverse laboratory applications. Whether filtering aqueous solutions, organic solvents, or suspensions, paper filters exhibit stability and effectiveness across different chemical environments. This versatility makes them a go-to choice for scientists working with various substances in their research. Ease of Use and Convenience The simplicity of incorporating paper filters into Buchner funnels adds to their appeal. The filters are readily available, easy to handle, and require minimal preparation. This convenience not only streamlines laboratory procedures but also enhances the overall user experience. Researchers can focus on the scientific aspects of their work without being burdened by complicated filtration processes. Cost-Effectiveness From an economic standpoint, paper filters offer a cost-effective solution for laboratory filtration. Compared to some alternative filtration methods, the affordability of paper filters makes them an attractive choice for researchers working within budget constraints. This cost-effectiveness does not compromise the quality of results, making paper filters a practical and efficient option for a wide range of scientific applications. Conclusion In conclusion, the integration of paper filters into Buchner funnels brings about a myriad of benefits that significantly contribute to the success of laboratory experiments. From enhanced filtration efficiency and precise particle retention to reduced contamination risks and versatility across different substances, paper filters prove to be indispensable tools in the scientific toolkit. Their ease of use, cost-effectiveness, and overall convenience further underscore their importance in facilitating successful and reliable filtration processes in the realm of laboratory research.

### ⭐⭐⭐⭐⭐ Worked well for me.
*by D***S on December 11, 2025*

Worked well for me.

## Frequently Bought Together

- StonyLab Qualitative Filter Paper Circles, 56mm Diameter Cellulose Filter Paper with 20 Micron Particle Retention Medium Filtration Speed, Pack of 100
- Homesprit lab vacuum filtration pump for Laboratory Vacuum Filtration Distillation Apparatus to filter the liquid quicker

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-05-24*