---
product_id: 505144429
title: "stonylab Qualitative Filter Paper, 100 Packs Slow Flow Rate Cellulose Filter Paper Circles with 10 Micron Particle Retention, 125 mm Diameter"
brand: "stonylab"
price: "€ 39.32"
currency: EUR
in_stock: true
reviews_count: 12
category: "Stonylab"
url: https://www.desertcart.de/products/505144429-stonylab-qualitative-filter-paper-100-packs-slow-flow-rate-cellulose
store_origin: DE
region: Germany
---

# 70-140 sec slow flow rate 125 mm diameter precision 10 micron particle retention stonylab Qualitative Filter Paper, 100 Packs Slow Flow Rate Cellulose Filter Paper Circles with 10 Micron Particle Retention, 125 mm Diameter

**Brand:** stonylab
**Price:** € 39.32
**Availability:** ✅ In Stock

## Summary

> 🔬 Filter like a pro, brew like a boss.

## Quick Answers

- **What is this?** stonylab Qualitative Filter Paper, 100 Packs Slow Flow Rate Cellulose Filter Paper Circles with 10 Micron Particle Retention, 125 mm Diameter by stonylab
- **How much does it cost?** € 39.32 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/505144429-stonylab-qualitative-filter-paper-100-packs-slow-flow-rate-cellulose)

## 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

- • **Low Ash Residue:** Ash content ≤0.15% guarantees minimal contamination for reliable lab and gourmet coffee results.
- • **Precision Perfect Fit:** 125 mm diameter circles engineered for seamless compatibility with StonyLab Buchner funnels and espresso portafilters.
- • **Ultra-Fine Filtration:** Captures particles larger than 10 microns, ensuring crystal-clear filtrate and smoother brews.
- • **Optimized Flow Control:** Slow flow rate between 70-140 seconds balances filtration speed with maximum purity.
- • **Versatile Lab & Lifestyle Essential:** Trusted by scientists and espresso aficionados alike for superior filtration performance.

## Overview

StonyLab Qualitative Filter Paper offers 125 mm diameter cellulose circles with a precise 10 micron particle retention and a controlled slow flow rate of 70-140 seconds. Designed for laboratory filtration and compatible with StonyLab Buchner funnels, these low-ash (≤0.15%) filter papers also double as a game-changer for espresso enthusiasts seeking smoother, faster brews without sacrificing intensity.

## 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: Great for espresso lovers! - These fit nicely into the bottom of our 54mm espresso machine portafilter Some influencer said paper filters cut out a component of coffee that can increase LDL & cholesterol but all I know is that with one of these in the bottom, my espresso tastes a bit smoother and no less intense. Also, bc the grounds no longer get into the tiny holes in the bottom of the portafilter, the brew comes out –> faster <– than before so I now use a finer grind. Nice & faster!
Review: great quality - filter papers were great good quality and were just what i needed for filtering fine gold particles

## Features

- Diameter: 125 mm
- Cellulose filter paper removes particles > 10 µm
- Filtration speed: 70 - 140 sec
- StonyLab standard filter paper circles; ash content: ≤0.15%
- Compatible with StonyLab Buchner Filtering Funnel

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09DFRVGKD |
| Best Sellers Rank | #31,611 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Qualitative Lab Filter Paper |
| Date First Available | August 24, 2021 |
| Item Weight | 3.88 ounces |
| Manufacturer | StonyLab Scientific |
| Product Dimensions | 4.92 x 0.87 x 4.92 inches |

## Images

![stonylab Qualitative Filter Paper, 100 Packs Slow Flow Rate Cellulose Filter Paper Circles with 10 Micron Particle Retention, 125 mm Diameter - Image 1](https://m.media-amazon.com/images/I/41XxThQ6jZL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great for espresso lovers!
*by W***H on July 30, 2025*

These fit nicely into the bottom of our 54mm espresso machine portafilter Some influencer said paper filters cut out a component of coffee that can increase LDL & cholesterol but all I know is that with one of these in the bottom, my espresso tastes a bit smoother and no less intense. Also, bc the grounds no longer get into the tiny holes in the bottom of the portafilter, the brew comes out –> faster <– than before so I now use a finer grind. Nice & faster!

### ⭐⭐⭐⭐⭐ great quality
*by L***� on January 27, 2025*

filter papers were great good quality and were just what i needed for filtering fine gold particles

### ⭐⭐⭐⭐⭐ Exactly what I needed
*by D***G on February 5, 2024*

These work perfectly for my geology lab to chemically extract copper from malachite. Thank you! Please keep these available for future purchases!

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**Shop now:** [https://www.desertcart.de/products/505144429-stonylab-qualitative-filter-paper-100-packs-slow-flow-rate-cellulose](https://www.desertcart.de/products/505144429-stonylab-qualitative-filter-paper-100-packs-slow-flow-rate-cellulose)

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-12*