--- product_id: 7752850 title: "Taylor Technologies R-0004 pH Indicator Reagent, 2 Ounce" brand: "taylor" price: "€ 21.12" currency: EUR in_stock: true category: "Taylor" url: https://www.desertcart.at/products/7752850-taylor-technologies-r-0004-ph-indicator-reagent-2-ounce store_origin: AT region: Austria --- # 2 oz dropper bottle for easy dosing Compatible with 2000 Series Comparator Precise pH indicator reagent Taylor Technologies R-0004 pH Indicator Reagent, 2 Ounce **Brand:** taylor **Price:** € 21.12 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead in pool care with precision you can trust! ## Quick Answers - **What is this?** Taylor Technologies R-0004 pH Indicator Reagent, 2 Ounce by taylor - **How much does it cost?** € 21.12 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/7752850-taylor-technologies-r-0004-ph-indicator-reagent-2-ounce) ## Best For - taylor enthusiasts ## Why This Product - Trusted taylor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Quality:** Phenol Red formula trusted by professionals and DIY enthusiasts alike - • **Lab-Grade Accuracy:** Ensures precise pH readings for your pool or spa maintenance - • **Effortless Application:** 2-ounce dropper bottle designed for controlled, mess-free testing - • **Seamless Compatibility:** Optimized for use with Taylor 2000 Series Comparator kits - • **Annual Replacement Reminder:** Maintain peak water quality with recommended yearly reagent refresh ## Overview Taylor Technologies R-0004 is a 2-ounce Phenol Red pH indicator reagent designed for accurate pool and spa water testing. Compatible with Taylor's 2000 Series Comparator, it delivers reliable, professional-grade results to help maintain optimal water balance. Highly rated and recommended for annual replacement to ensure consistent performance. ## Description Taylor R-0004 pH Indicator Reagent. For use with Taylor Test Kits. Size: 2 ounce ## Features - For use as directed with Taylor Technologies test kits - R-0004 is used for the pH test - Use with 2000 Series Comparator - 2 ounce dropper bottle ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0030EVB74 | | Best Sellers Rank | #5,594 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Analytical Reagents | | Brand Name | TAYLOR | | Customer Reviews | 4.6 4.6 out of 5 stars (1,034) | | Included Components | swimming-pool-chemicals-and-supplies | | Item Highlight | Phenol Red Dropper Refill (2 oz) Tests pH in Pools & Spas, Replace Annually | | Item Type Name | Taylor Technologies R-0004 pH Indicator Reagent, 2 Ounce | | Item Weight | 0.27 g | | Manufacturer | TAYLOR | | Material Type | solid | | Model Number | R-0004-C | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | R-0004-C | | Recommended Uses For Product | Swimming Pool, Spa | | Sterility Rating | 0-14 | | UPC | 840036000199 | ## Product Details - **Brand:** TAYLOR - **Manufacturer:** TAYLOR - **Ph Range:** 0-14 - **Recommended Uses For Product:** Swimming Pool, Spa - **UPC:** 840036000199 ## Images ![Taylor Technologies R-0004 pH Indicator Reagent, 2 Ounce - Image 1](https://m.media-amazon.com/images/I/715OjsrlqML.jpg) ## Available Options This product comes in different **Item Package Quantity** options. ## Questions & Answers **Q: What exactly am i getting here? the model # shows r-0002a with description of 2.75oz while the picture on amazon shows r-0004 with 2oz?** A: Thank you for your question. This item's descriptive data is currently all messed up. I reported it to Amazon several days ago and it remains a disaster. This item is supposed to be a Taylor R-0004 reagent in the 2 oz size (a.k.a. R-0004-C). There is no "2.75 oz" size available and this is NOT a DPD reagent. it is a pH Reagent. **Q: Can this be used to test drinking water?** A: This reagent is for use with a Taylor test kit, such as the K-2006 FAS-DPD chlorine test kit. If you have one of those, or at least the pH comparator tube (the one with the colored windows to compare the color of the test water to), then yes, you can then use this reagent to find the pH of drinking water (if it's between 7.0-8.0). If the test water is out of this range, then no.When used with the Taylor K-2006, you can measure the pH in 0.2 increments (from pH 7.0-8.0). **Q: how many drops per 10 ml ?** A: Hi 5drops per 44ml **Q: Can you tell me the expiration date** A: 04/17 ## Frequently Bought Together - Taylor Technologies R-0004 pH Indicator Reagent, 2 Ounce - Taylor R-0008-C, Total Alkalinity Indicator, 2 Ounce, For Testing Total Alkalinity Levels in Pool and Spas, Dropper Refill for Water Test Kits, Replace Annually | Made in the USA - Taylor Technologies R-0871-C Fas-Dpd Titrating 2 Oz --- ## 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.at/products/7752850-taylor-technologies-r-0004-ph-indicator-reagent-2-ounce](https://www.desertcart.at/products/7752850-taylor-technologies-r-0004-ph-indicator-reagent-2-ounce) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-17*