--- product_id: 34116979 title: "6903A Instrument Grade TesTabs for ColorQ, DPD #1, 100 ct." brand: "lamotte" price: "€ 30.00" currency: EUR in_stock: true reviews_count: 7 category: "La Motte" url: https://www.desertcart.hr/products/34116979-6903a-instrument-grade-testabs-for-colorq-dpd-1-100-ct store_origin: HR region: Croatia --- # 3-Year Shelf Life 0-10 ppm Chlorine Range Instrument Grade Precision 6903A Instrument Grade TesTabs for ColorQ, DPD #1, 100 ct. **Brand:** lamotte **Price:** € 30.00 **Availability:** ✅ In Stock ## Summary > 🧪 Stay ahead with precision chlorine testing—because your water deserves the best. ## Quick Answers - **What is this?** 6903A Instrument Grade TesTabs for ColorQ, DPD #1, 100 ct. by lamotte - **How much does it cost?** € 30.00 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/34116979-6903a-instrument-grade-testabs-for-colorq-dpd-1-100-ct) ## Best For - lamotte enthusiasts ## Why This Product - Trusted lamotte brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Value Pack:** 100 tablets per pack—ideal for frequent testing without constant reordering. - • **Trusted by Pros:** Preferred by pool and lab experts for consistent, high-quality results at a great price. - • **Extended Freshness:** Enjoy up to 3 years of reliable shelf life—always ready when you need it. - • **Lab-Grade Accuracy:** DPD #1 tablets designed for precise free chlorine measurement with colorimeters and spectrophotometers. - • **Wide Detection Range:** Measures free chlorine from 0 to 10 ppm, perfect for professional water quality control. ## Overview LaMotte 6903A Instrument Grade TesTabs are DPD #1 chlorine tablets formulated for accurate free chlorine measurement in water. Compatible with colorimeters and spectrophotometers, these tablets offer a 0-10 ppm detection range and a shelf life of approximately three years. Packaged in a convenient 100-count supply, they provide reliable, professional-grade testing for pool and laboratory water quality management. ## Description LaMotte Instrument Grade DPD #1 testing tablets, 100 count. For use with LaMotte ColorQ Test Kits. Review: accurate chlorine testing tablets, great price, quality product. - I have ordered these twice and both times the tablets worked well and remained in great condition. I have bought a different brand from a local pool store and sometimes the tablets are broken or are like paste. The delivery was a day or two if you can wait. Review: Worked just like the ones from the pool store - These worked just like the ones from the pool supply store for way less money! ## Features - DPD chlorine tablets employ DPD indicator (diethyl-p-phenylenediamine) to distinguish levels of free, combined, and total chlorine in a simple test sample - DPD chlorine tablets designated “Instrument Grade” are suitable for use with colorimeters and spectrophotometers - DPD No. 1 Tablet is used to measure free available chlorine in water. Range: 0 to 10 ppm for approximately 10 mL sample size - Shelf life: approx. three years. Instrument Grade ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01DR4AOX8 | | Best Sellers Rank | #69,960 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #89 in Swimming Pool Water Test Kits | | Date First Available | May 25, 2010 | | Is Discontinued By Manufacturer | No | | Item Weight | 0.96 ounces | | Item model number | 6903A-J | | Manufacturer | Lamotte | | Package Dimensions | 4.21 x 2.56 x 1.73 inches | ## Product Details - **Brand:** LaMotte - **Manufacturer:** Lamotte - **Material:** DPD - **Recommended Uses For Product:** Water Test, Nitrite Test, Nitrate Test, Ammonia Test - **UPC:** 637395446849 ## Images ![6903A Instrument Grade TesTabs for ColorQ, DPD #1, 100 ct. - Image 1](https://m.media-amazon.com/images/I/71aki6GIHuL.jpg) ## Questions & Answers **Q: will these work with the color Q 2x system as well? or only the first generation color Q machine?** A: Yes, these work with both ColorQ and ColorQ 2x. ## Customer Reviews ### ⭐⭐⭐⭐⭐ accurate chlorine testing tablets, great price, quality product. *by P***4 on July 6, 2025* I have ordered these twice and both times the tablets worked well and remained in great condition. I have bought a different brand from a local pool store and sometimes the tablets are broken or are like paste. The delivery was a day or two if you can wait. ### ⭐⭐⭐⭐⭐ Worked just like the ones from the pool store *by T***D on June 22, 2025* These worked just like the ones from the pool supply store for way less money! ### ⭐⭐⭐⭐⭐ No running around the city. *by R***D on October 23, 2024* Delivered to my door a day later ## Frequently Bought Together - LaMotte 6903A Instrument Grade TesTabs for ColorQ, DPD #1, 100 ct. - LaMotte 3880A Instrument Grade TesTabs for ColorQ, pH, 100 ct. - LaMotte Chlorine Test Tablets, DPD #3; 100/Bx --- ## 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.hr/products/34116979-6903a-instrument-grade-testabs-for-colorq-dpd-1-100-ct](https://www.desertcart.hr/products/34116979-6903a-instrument-grade-testabs-for-colorq-dpd-1-100-ct) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-22*