---
product_id: 59603643
title: "Ahlstrom 6420-2500 Eaton-Dike Filter Paper, 2 Micron, Medium Flow, Grade 642, 25cm Diameter (Pack of 100)"
brand: "ahlstrom"
price: "HK$614"
currency: HKD
in_stock: true
reviews_count: 4
url: https://www.desertcart.hk/products/59603643-ahlstrom-6420-2500-eaton-dike-filter-paper-2-micron-medium
store_origin: HK
region: Hong Kong
---

# Ahlstrom 6420-2500 Eaton-Dike Filter Paper, 2 Micron, Medium Flow, Grade 642, 25cm Diameter (Pack of 100)

**Brand:** ahlstrom
**Price:** HK$614
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Ahlstrom 6420-2500 Eaton-Dike Filter Paper, 2 Micron, Medium Flow, Grade 642, 25cm Diameter (Pack of 100) by ahlstrom
- **How much does it cost?** HK$614 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/59603643-ahlstrom-6420-2500-eaton-dike-filter-paper-2-micron-medium)

## 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

Size:25cm Diameter, Pack of 100




























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.

## Features

- Quantitative analysis
- Low ash content 0.06 percent
- Untreated; high wet-strength
- Consistent performance
- Custom cut

## Images

![Ahlstrom 6420-2500 Eaton-Dike Filter Paper, 2 Micron, Medium Flow, Grade 642, 25cm Diameter (Pack of 100) - Image 1](https://images-na.ssl-images-amazon.com/images/I/71478spMLrL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Great product
  

*by A***R on Reviewed in the United States on September 29, 2019*

I use these to filter my finished Colloidal Silver batches and noticed a big reduction in final particle size vs using coffee filters in the past. Now I'm able to make 20 PPM batches that stay permanently clear and only have a cloudy beam (Ionic particles) instead of a glittery beam (larger Colloidal particles) when testing visually via the Tyndall effect. Very happy with this product and will buying more.

### ⭐⭐⭐⭐⭐ 







  
  
    Need a fine filter that isn't too large a diameter Consider this is one
  

*by P***S on Reviewed in the United States on June 18, 2020*

Nice filter that isn't too big

### ⭐⭐⭐⭐⭐ 







  
  
    Nice Fit
  

*by T***R on Reviewed in the United States on March 5, 2019*

Fit perfect and easy to reconstitute from.

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**Shop now:** [https://www.desertcart.hk/products/59603643-ahlstrom-6420-2500-eaton-dike-filter-paper-2-micron-medium](https://www.desertcart.hk/products/59603643-ahlstrom-6420-2500-eaton-dike-filter-paper-2-micron-medium)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-19*