--- product_id: 90313179 title: "Taylor Technologies R-0004-E Reagent No.4 pH Indicator 16 oz." brand: "taylor technologies" price: "AED 172" currency: AED in_stock: true reviews_count: 8 category: "Taylor Technologies" url: https://www.desertcart.ae/products/90313179-taylor-technologies-r-0004-e-reagent-no-4-ph-indicator store_origin: AE region: United Arab Emirates --- # Highly rated #25 analytical reagent 16 oz precision reagent Accurate pH level maintenance Taylor Technologies R-0004-E Reagent No.4 pH Indicator 16 oz. **Brand:** taylor technologies **Price:** AED 172 **Availability:** ✅ In Stock ## Summary > 🧪 Stay ahead with precision pH testing—because your water deserves the best! ## Quick Answers - **What is this?** Taylor Technologies R-0004-E Reagent No.4 pH Indicator 16 oz. by taylor technologies - **How much does it cost?** AED 172 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/90313179-taylor-technologies-r-0004-e-reagent-no-4-ph-indicator) ## Best For - taylor technologies enthusiasts ## Why This Product - Trusted taylor technologies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimize Water Quality:** Maintains ideal pH balance for safer, more comfortable swimming environments. - • **Seamless Compatibility:** Designed as a perfect replacement for Taylor Test Kits, no recalibration needed. - • **Precision in Every Drop:** 16 oz bottle ensures long-lasting, reliable pH testing for your water treatment needs. - • **Proven User Satisfaction:** 4.6-star rating from 158 reviews—join the community of confident testers. - • **Trusted Industry Standard:** Ranked #25 in Analytical Reagents, a go-to choice for professionals demanding accuracy. ## Overview Taylor Technologies R-0004-E Reagent No.4 is a 16 oz liquid pH indicator designed as a direct replacement for Taylor Test Kits. Ranked #25 in Analytical Reagents and boasting a 4.6-star rating from 158 users, it ensures accurate pH level measurement to maintain optimal water quality for swimming and treatment applications. ## Description Taylor Technologies R-0004-E Reagent No.4 pH Indicator 16 oz. Review: It's the stuff. - Works. Review: Good product - Needed to find some phenol red. this was it. ## Features - Replacement reagent for the Taylor Test Kits - 16 oz bottle of pH Indicator # 4 - Taylor Reagent #: R-0004-E ## Technical Specifications | Specification | Value | |---------------|-------| | Best Sellers Rank | #20,995 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #25 in Analytical Reagents | | Brand | Taylor Technologies | | Customer Reviews | 4.6 out of 5 stars 158 Reviews | | Item Form | Liquid | | Item Weight | 16 Ounces | | Number of Items | 1 | | Product Benefits | Maintains proper pH levels for comfortable swimming and effective water treatment | | UPC | 840036000236 840036000229 | ## Product Details - **Brand:** Taylor Technologies - **Item Form:** Liquid - **Item Weight:** 16 Ounces - **Product Benefits:** Maintains proper pH levels for comfortable swimming and effective water treatment - **UPC:** 840036000236 840036000229 ## Images ![Taylor Technologies R-0004-E Reagent No.4 pH Indicator 16 oz. - Image 1](https://m.media-amazon.com/images/I/71WPWFR2xuL.jpg) ## Questions & Answers **Q: Are these bulk bottles meant for refilling the smaller dropper bottles? If not, how do you dispense the appropriate amount of reagent?** A: Yes, you bulk bottles meant to refill the small dropper bottles that came with original test kit. **Q: What is the shelf life?** A: a couple of years at least , if stored in air cond. in the dark, or a couple of weeks in the sun. do not freeze **Q: Can i use this product with my poolmaster test kit? not just for measuring ph, but also for acid demand test?** A: U put 5 drops in 44 ml of water ,yellow is 7.0, purple is 8.0 so 7.4 is a kinda orangy pink peachy. u will need the acid demand and base demand drops to add to ur test. So lets say ur pool is at 7.8 ph and you need it to be 7.4 You add however many drops it takes to change its color to peachy,then U figure how many cups of acid in the pool equals 1 drop probably 1 for a 15000 gal pool , start with 1 cup of muratic per drop for a 15000 gal pool Acid Demand #: R-0005-A **Q: what is the expiration date?** A: Usually 2 years, just depends. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It's the stuff. *by S***O on May 17, 2024* Works. ### ⭐⭐⭐⭐⭐ Good product *by A***R on October 23, 2025* Needed to find some phenol red. this was it. ### ⭐⭐⭐⭐⭐ This size bottle gives you the best value if you test frequently *by J***N on December 20, 2021* I have the full Taylor test kit that I use for both my pool and spa. I buy these larger bottles and use them to refill the smaller bottles in my test kit. The tips pull right off of the smaller bottles with a little bit or force. Use some gloves when transferring back and forth with this bottle or you'll get some nice yellowish stains on your skin with this product. Try to store this where the temperature is fairly constant and it's not in direct sunlight. ## Frequently Bought Together - Taylor Technologies R-0004-E Reagent No.4 pH Indicator 16 oz. - TAYLOR TECHNOLOGIES INC R-0871-E FAS-DPD TITRATING 16 OZ - Taylor Replacement Reagent R-0870-J DPD Powder .25-Pound --- ## 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.ae/products/90313179-taylor-technologies-r-0004-e-reagent-no-4-ph-indicator](https://www.desertcart.ae/products/90313179-taylor-technologies-r-0004-e-reagent-no-4-ph-indicator) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-05-11*