--- product_id: 36428546 title: "Macherey-Nagel, 90725, Dipyridyl Paper, Box of 200 Strips" brand: "macherey-nagel" price: "€ 112.66" currency: EUR in_stock: true reviews_count: 3 category: "Macherey Nagel" url: https://www.desertcart.hr/products/36428546-macherey-nagel-90725-dipyridyl-paper-box-of-200-strips store_origin: HR region: Croatia --- # 200 strips per box for bulk testing Sensitive Fe(II) detection β‰₯2 mg/L Store refrigerated for max efficacy Macherey-Nagel, 90725, Dipyridyl Paper, Box of 200 Strips **Brand:** macherey-nagel **Price:** € 112.66 **Availability:** βœ… In Stock ## Summary > πŸ§ͺ Stay ahead in iron detectionβ€”because precision is power! ## Quick Answers - **What is this?** Macherey-Nagel, 90725, Dipyridyl Paper, Box of 200 Strips by macherey-nagel - **How much does it cost?** € 112.66 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/36428546-macherey-nagel-90725-dipyridyl-paper-box-of-200-strips) ## Best For - macherey-nagel enthusiasts ## Why This Product - Trusted macherey-nagel brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Bulk-Ready Testing:** 200 strips per box to keep your lab or fieldwork fully stocked - β€’ **Optimized Sensitivity:** Detect iron concentrations as low as 2 mg/L for reliable results - β€’ **Field-Tested Reliability:** Trusted by wetland professionals for accurate soil profiling - β€’ **Pinpoint Fe(II) Detection:** Detect trace iron ions with precision even amidst Fe(III) interference - β€’ **Vinegar-Enhanced Reaction:** Simple vinegar prep boosts strip responsiveness for flawless readings ## Overview Macherey-Nagel's Dipyridyl Paper strips offer highly sensitive and specific detection of Fe(II) ions down to 2 mg/L, even in the presence of Fe(III). Supplied in a convenient box of 200, these strips are ideal for chemical testing in labs and fieldwork, with proven reliability in wetland delineations. For optimal performance, pre-wet strips with vinegar and store refrigerated. ## Description The test paper allows the sensitive and specific detection of Fe(II) ions. Even small amounts of Fe(II) can safely be detected in presence of large amounts of Fe(III). Limit of sensitivity: 2 mg/l Fe 2 Review: Good for Wetland Delineations - My team and I used these a bunch for wetland delineations when I worked in California. We kept the container with the strips in the refrigerator at work, taped shut, with a note for ownership so our admin staff wouldn't throw them out during fridge purges. The strips did not work well until we started damping them with cheap white vinegar after we laid the strips along the soil profile to facilitate the reaction. A small sample bottle filled with white vinegar became part of our wetland delineation kits. Review: Use vinegar - Must first spray with vinegar for them to work ## Features - Dipyridyl Paper, Box Of 200 Strips ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00S1UP9F2 | | Best Sellers Rank | #307,752 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #404 in pH Test Strips | | Brand | MACHEREY-NAGEL | | Brand Name | MACHEREY-NAGEL | | Customer Reviews | 4.4 out of 5 stars 4 Reviews | | Item Height | 8.5 centimeters | | Item Weight | 0.01 Ounces | | Manufacturer | Macherey-Nagel | | Material | Dipyridyl Paper | | Material Type | Dipyridyl Paper | | Ph Range | 4.0-10.0 | | Recommended Uses For Product | Chemical Test | | Sterility Rating | 4.0-10.0 | ## Images ![Macherey-Nagel, 90725, Dipyridyl Paper, Box of 200 Strips - Image 1](https://m.media-amazon.com/images/I/71Qrwyc0LML.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good for Wetland Delineations *by T***N on March 7, 2022* My team and I used these a bunch for wetland delineations when I worked in California. We kept the container with the strips in the refrigerator at work, taped shut, with a note for ownership so our admin staff wouldn't throw them out during fridge purges. The strips did not work well until we started damping them with cheap white vinegar after we laid the strips along the soil profile to facilitate the reaction. A small sample bottle filled with white vinegar became part of our wetland delineation kits. ### ⭐⭐⭐ Use vinegar *by T***A on December 3, 2020* Must first spray with vinegar for them to work ### ⭐⭐⭐⭐⭐ Test paper is easy to use and much more convenient than liquid AAD ... *by A***R on August 29, 2016* Order arrived faster than expected. Test paper is easy to use and much more convenient than liquid AAD for field work. Test paper comes in a convenient plastic box. --- ## 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.hr/products/36428546-macherey-nagel-90725-dipyridyl-paper-box-of-200-strips](https://www.desertcart.hr/products/36428546-macherey-nagel-90725-dipyridyl-paper-box-of-200-strips) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-06-08*