--- product_id: 17309990 title: "1004-150 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 150mm Diameter (Pack of 100)" brand: "whatman" price: "529.34 DT" currency: TND in_stock: false reviews_count: 9 url: https://www.desertcart.tn/products/17309990-1004-150-quantitative-filter-paper-circles-20-25-micron-3 store_origin: TN region: Tunisia --- # 3.7 s/100mL/sq inch ultra-fast flow 150mm diameter precision 20-25 micron particle retention 1004-150 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 150mm Diameter (Pack of 100) **Brand:** whatman **Price:** 529.34 DT **Availability:** ❌ Out of Stock ## Summary > ⚡ Filter faster, analyze smarter — don’t get left behind! ## Quick Answers - **What is this?** 1004-150 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 150mm Diameter (Pack of 100) by whatman - **How much does it cost?** 529.34 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/17309990-1004-150-quantitative-filter-paper-circles-20-25-micron-3) ## 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 for high-volume lab or industrial workflows - • **Lightning-Fast Flow Rate:** 3.7 seconds per 100mL per sq inch for rapid sample processing - • **Versatile Analytical Use:** Ideal for qualitative analysis, air pollution monitoring, and biological fluid cleanup - • **Coarse Particle Retention:** Captures 20-25 micron particles and gelatinous precipitates with ease - • **Precision-Cut 150mm Circles:** Perfectly sized for consistent, reliable filtration every time ## Overview Whatman Grade 4 quantitative filter paper circles (150mm diameter) deliver ultra-fast filtration with a flow rate of 3.7 seconds per 100mL per square inch, efficiently retaining coarse particles sized 20-25 microns. Designed for qualitative analytical techniques and air pollution monitoring, this pack of 100 ensures consistent, high-volume performance in laboratory and industrial settings. ## Description This Whatman 15.0cm, grade 4, cellulose filter paper is used in qualitative analytical techniques to determine and identify materials. It is extremely fast filtering. It provides excellent retention of coarse particles (20-25µm) and gelatinous precipitates such as ferric hydroxide and aluminium hydroxide. It is very useful as a rapid filter for routine cleanup of biological fluids or organic extracts during analysis. This filter paper is used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical. Retention: 20-25µm. Dimensions: 15.0cm. 100/Pack. Whatman #: 1004-150. Review: good for filtered espresso - the filter fits perfectly in the small (51mm tapered) passive filter basket of my espresso maker, and works to prevent the joint ache that afflicts some people drinking unfiltered coffee. the flow rate is very good (does not affect crema appreciably), and the filter remains unbroken. it will disintegrate if washed though. Some could be concerned about whether they're food safe - in that case, best to get coffee filters and cut to size. Review: Love it prompt shipping - Love it prompt shipping ## Features - 15.0cm - Grade 4 - Used in qualitative analytical techniques to determine and identify materials - Extremely fast filtering; provides excellent retention of coarse particles (20-25µm) and gelatinous precipitates such as ferric hydroxide and aluminium hydroxide - Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00394F9QE | | Best Sellers Rank | #94,914 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Quantitative Lab Filter Paper | | Date First Available | March 20, 2008 | | Is Discontinued By Manufacturer | No | | Item Weight | 4 ounces | | Item model number | F1060-7 | | Manufacturer | Whatman | | National Stock Number | 6640-00-543-6045 | | Product Dimensions | 5.9 x 6.1 x 1.2 inches | ## Images ![1004-150 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 150mm Diameter (Pack of 100) - Image 1](https://m.media-amazon.com/images/I/418T+dAeaVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ good for filtered espresso *by B***T on November 10, 2017* the filter fits perfectly in the small (51mm tapered) passive filter basket of my espresso maker, and works to prevent the joint ache that afflicts some people drinking unfiltered coffee. the flow rate is very good (does not affect crema appreciably), and the filter remains unbroken. it will disintegrate if washed though. Some could be concerned about whether they're food safe - in that case, best to get coffee filters and cut to size. ### ⭐⭐⭐⭐⭐ Love it prompt shipping *by W***A on March 26, 2019* Love it prompt shipping ### ⭐⭐⭐⭐⭐ Five Stars *by M***. on January 31, 2017* Good product, fast shipping. ## Frequently Bought Together - Whatman 1004-150 Quantitative Filter Paper Circles, 20-25 Micron, 3.7 s/100mL/sq inch Flow Rate, Grade 4, 150mm Diameter (Pack of 100) - Hach 2106769 SulfaVer® 4 Sulfate Reagent Powder Pillows, 10 mL, (Pack of 100) - Comfy Package [5 oz. - 500 Count White Plastic Cups - Cold White Cups for Parties, Disposable Drinking Cups for All occasions --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/17309990-1004-150-quantitative-filter-paper-circles-20-25-micron-3](https://www.desertcart.tn/products/17309990-1004-150-quantitative-filter-paper-circles-20-25-micron-3) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-06*