--- 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: "β‚Ή 4582" currency: INR in_stock: true category: "Whatman" url: https://www.desertcart.in/products/28253875-whatman-1001-042-quantitative-filter-paper-circles-11-micron-10 store_origin: IN region: India --- # 42.5mm precision diameter 11 micron medium retention 10.5 s/100mL/sq inch flow rate 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:** β‚Ή 4582 **Availability:** βœ… In Stock ## Summary > πŸ§ͺ 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?** β‚Ή 4582 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/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 - β€’ **Balanced Flow Rate:** 10.5 s/100mL/sq inch ensures efficient filtration speed - β€’ **Versatile Grade 1 Quality:** Trusted across food, agriculture, air monitoring & education - β€’ **Optimal 11 Micron Retention:** Captures fine particulates without compromising flow - β€’ **Precision-Cut 42.5mm Circles:** Perfectly sized for consistent lab results every time - β€’ **Pack of 100 for Bulk Efficiency:** Stay stocked and ready for all your routine lab needs ## Overview Whatman 1001-042 Grade 1 quantitative filter paper circles measure 42.5mm in diameter with an 11 micron retention rating and a flow rate of 10.5 seconds per 100mL per square inch. Widely used in laboratories for qualitative and quantitative separations, these cellulose filters excel in applications spanning food industry testing, agriculture, air pollution monitoring, and educational labs. Each pack contains 100 precision-cut circles designed for reliable, consistent filtration performance. ## Description This Whatman 4.25cm, grade 1, cellulose filter paper is the most widely used filter paper for routine applications with medium retention (11Β΅m) 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: 11Β΅m. Diameter: 4.25cm. 100/Pack. Whatman #: 1001-042. ## 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 | #226,308 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Quantitative Lab Filter Paper | | Date First Available | May 25, 2017 | | 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/41GiOTvb11L.jpg) ![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 2](https://m.media-amazon.com/images/I/612Nq1-V77L.jpg) ## Available Options This product comes in different **Size** options. ## 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 ## 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) - Weigh Boats Medium (100ml, 125 Pack) Disposable Plastic Trays for Scale, Anti-Static Square Tray Weighing Dishes, Polystyrene Lab Dish for Powder Weight, Mixing Epoxy, Food Sample Container, Pour Boat - ALDON Innovating Science 0.1M Hydrochloric Acid, 1L Excellent for Chemistry or Refinement Experiments - The Curated Chemical Collection --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/28253875-whatman-1001-042-quantitative-filter-paper-circles-11-micron-10](https://www.desertcart.in/products/28253875-whatman-1001-042-quantitative-filter-paper-circles-11-micron-10) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-09-24*