---
product_id: 28253875
title: "Whatman 1001-042 Quantitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 42.5mm Diameter (Pack of 100)"
brand: "whatman"
price: "27037CFA"
currency: XOF
in_stock: true
reviews_count: 10
category: "Whatman"
url: https://www.desertcart.sn/products/28253875-whatman-1001-042-quantitative-filter-paper-circles-11-micron-10
store_origin: SN
region: Senegal
---

# 10.5 s/100mL/sq inch flow rate 42.5mm diameter precision 11µm medium retention Whatman 1001-042 Quantitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 42.5mm Diameter (Pack of 100)

**Brand:** whatman
**Price:** 27037CFA
**Availability:** ✅ In Stock

## Summary

> 🧪 Elevate your lab game with Whatman’s gold standard filter circles!

## Quick Answers

- **What is this?** Whatman 1001-042 Quantitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 42.5mm Diameter (Pack of 100) by whatman
- **How much does it cost?** 27037CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/28253875-whatman-1001-042-quantitative-filter-paper-circles-11-micron-10)

## Best For

- whatman enthusiasts

## Why This Product

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

## Key Features

- • **Bulk Pack of 100:** Stay stocked and ready—avoid last-minute scrambles with a generous supply for ongoing projects.
- • **Versatile Grade 1 Quality:** Trusted across food, agriculture, air pollution, and educational labs for diverse applications.
- • **Optimal 11 Micron Retention:** Captures fine particulates with medium retention, balancing speed and accuracy effortlessly.
- • **Precision-Cut 42.5mm Circles:** Perfectly sized for consistent lab results and seamless integration into your workflow.
- • **Reliable 10.5 s/100mL Flow Rate:** Ensures efficient filtration without compromising sample integrity—time is money.

## Overview

Whatman 1001-042 Grade 1 quantitative filter paper circles (42.5mm diameter) offer medium retention at 11 microns and a flow rate of 10.5 seconds per 100mL per square inch. Widely used in food, agriculture, air pollution monitoring, and education, these cellulose filters deliver consistent, reliable filtration for routine analytical separations. Packaged in convenient sets of 100, they ensure your lab stays efficient and prepared.

## Description

This Whatman 4.25cm, grade 1, cellulose filter paper is the most widely used filter paper for routine applications with medium retention (11µm) and flow rate. Traditionally, this grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate. In agriculture, it is used for soil analysis and seed testing procedures. It is also used for numerous routine techniques in the food industry to separate solid foodstuffs from associated liquid or extracting liquid; and is widely used in education for teaching simple qualitative analytical separations. In air pollution monitoring, using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity is measured photometrically. For gas detection, the paper is impregnated with a chromogenic reagent and color formation is quantified by optical reflectance. Retention: 11µm. Diameter: 4.25cm. 100/Pack. Whatman #: 1001-042.

Review: Evens Out Water On Coffee - I use it for my Mr. Coffee single cup/steam coffee maker. Lasts most of week and distribute water evenly.
Review: Whatman filter papers - Needed decent filter papers for waste water filtration for filtered BOD the papers were all I needed and happy with purchase I would buy these again

## Features

- 4.25cm
- Grade 1
- Covers a wide range of laboratory applications; frequently used for clarifying liquids
- Areas of use include the food industry, agriculture, air pollution monitoring, and gas detection
- Widely used in education for teaching simple qualitative analytical separations

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00394F978 |
| Best Sellers Rank | #64,168 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Quantitative Lab Filter Paper |
| Date First Available | May 25, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.16 ounces |
| Item model number | F1000-1 |
| Manufacturer | Whatman |
| Product Dimensions | 3.5 x 2.3 x 1 inches |

## Images

![Whatman 1001-042 Quantitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 42.5mm Diameter (Pack of 100) - Image 1](https://m.media-amazon.com/images/I/612Nq1-V77L.jpg)

## Questions & Answers

**Q: What's a good product to use the smaller ones with? Amazon sell anything good?**
A: You question makes no sense at all.

**Q: If needed, can these be cut to fit a specific size of funnel? Or would I be better off just buying some of the square filters and cutting those?**
A: Buy the correct size for your Buckner funnel; if you are using a gravity funnel, look up how to fold round filter paper for this type filter.

**Q: Will these tolerate chlorinated solvents or will they dissolve?**
A: This filters will tolerate

## Customer Reviews

### ⭐⭐⭐⭐⭐ Evens Out Water On Coffee
*by D***P on January 20, 2021*

I use it for my Mr. Coffee single cup/steam coffee maker. Lasts most of week and distribute water evenly.

### ⭐⭐⭐⭐ Whatman filter papers
*by D***R on January 2, 2014*

Needed decent filter papers for waste water filtration for filtered BOD the papers were all I needed and happy with purchase I would buy these again

### ⭐⭐⭐⭐⭐ Good quality originals
*by C***G on November 4, 2021*

Good quality original filters from whatman

## Frequently Bought Together

- Whatman 1001-042 Quantitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 42.5mm Diameter (Pack of 100)
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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-22*