---
product_id: 59603641
title: "6420-1850 Qualitative Filter Paper, 2 Micron, Medium Flow, Grade 642, 18.5cm Diameter (Pack of 100)"
brand: "ahlstrom"
price: "€ 43.56"
currency: EUR
in_stock: true
reviews_count: 6
category: "Ahlstrom"
url: https://www.desertcart.pt/products/59603641-6420-1850-qualitative-filter-paper-2-micron-medium-flow-grade
store_origin: PT
region: Portugal
---

# 6420-1850 Qualitative Filter Paper, 2 Micron, Medium Flow, Grade 642, 18.5cm Diameter (Pack of 100)

**Brand:** ahlstrom
**Price:** € 43.56
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 6420-1850 Qualitative Filter Paper, 2 Micron, Medium Flow, Grade 642, 18.5cm Diameter (Pack of 100) by ahlstrom
- **How much does it cost?** € 43.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/59603641-6420-1850-qualitative-filter-paper-2-micron-medium-flow-grade)

## Best For

- ahlstrom enthusiasts

## Why This Product

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

## Description

Ahlstrom's qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. Ahlstrom offers a complete range of low ash filter papers for general laboratory work that provides you with the correct combination of particle retention, filtration speed, loading capacity and wet-strength. All our qualitative grades consist of greater than 95 percent super refined a-cellulose and linter fibers. This grade has finer particle retention than Ahlstrom 601 but with slightly lower filtration speed. Ahlstrom 642 also has higher absorption than Ahlstrom 601. It is used in general laboratory applications to retain particles above 2 micrometer in size. Ahlstrom 642 is also found in agricultural and environmental laboratories for plant growth trials, soil testing, and air analysis for monitoring specific contaminants and in the filtration of organic and sulfide precipitates. 229 sec/100mls Filtration speed herzberg. 30 mls/min Filtration speed rapidity. Medium loading capacity.

Review: Fast shipping - As described
Review: Good item - Good item

## Features

- 18.5 cm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.0 out of 5 stars 29 Reviews |

## Images

![6420-1850 Qualitative Filter Paper, 2 Micron, Medium Flow, Grade 642, 18.5cm Diameter (Pack of 100) - Image 1](https://m.media-amazon.com/images/I/71J0QRPt+qL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fast shipping
*by G***D on April 20, 2020*

As described

### ⭐⭐⭐⭐⭐ Good item
*by B***B on January 29, 2020*

Good item

### ⭐⭐⭐⭐⭐ Satisfied
*by P***L on February 15, 2019*

Exactly what I have been looking for

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---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-09*