--- product_id: 682994399 title: "Phenol Red Rapid Dissolve Tablets | pH Test Range 6.8–8.4 | For Swimming Pools, Spas & Hot Tubs | Accurate Results for Comparators & Testers, Reliable Colour Change (250 Pack)" brand: "test all water" price: "£34.33" currency: GBP in_stock: true reviews_count: 1 category: "Test All Water" url: https://www.desertcart.co.uk/products/682994399-phenol-red-rapid-dissolve-tablets-ph-test-range-6-8 store_origin: GB region: United Kingdom --- # Accurate pH range 6.8-8.4 Rapid dissolve for fast results Safe, boric-acid-free formula Phenol Red Rapid Dissolve Tablets | pH Test Range 6.8–8.4 | For Swimming Pools, Spas & Hot Tubs | Accurate Results for Comparators & Testers, Reliable Colour Change (250 Pack) **Brand:** test all water **Price:** £34.33 **Availability:** ✅ In Stock ## Summary > 💧 Test fast, stay flawless: your pool’s pH guardian! ## Quick Answers - **What is this?** Phenol Red Rapid Dissolve Tablets | pH Test Range 6.8–8.4 | For Swimming Pools, Spas & Hot Tubs | Accurate Results for Comparators & Testers, Reliable Colour Change (250 Pack) by test all water - **How much does it cost?** £34.33 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/682994399-phenol-red-rapid-dissolve-tablets-ph-test-range-6-8) ## Best For - test all water enthusiasts ## Why This Product - Trusted test all water brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Optimized pH Range:** Precisely measures pH between 6.8 and 8.4 to maintain ideal water balance for chlorine efficiency and bather comfort. - • **Eco-Safe & Hygienic:** Blister-packed in foil cups with a chlorine-offsetting formula, ensuring freshness, safety, and consistent accuracy every time. - • **User-Friendly Design:** Pre-measured tablets eliminate guesswork—just push, drop, and test for hassle-free water quality checks. - • **Speed Meets Precision:** Get reliable pH readings in seconds with rapid dissolve Phenol Red tablets, perfect for busy pool pros and spa enthusiasts. - • **Versatile Compatibility:** Seamlessly integrates with most pool test kits and comparators, making it a must-have for professionals and hobbyists alike. ## Overview TEST ALL WATER Phenol Red Rapid Dissolve Tablets offer fast, accurate pH testing for pools, spas, and industrial water within a 6.8-8.4 range. With 250 pre-measured, boric-acid-free tablets, this German-engineered solution ensures safe, hygienic, and reliable water quality monitoring compatible with most test kits. ## Description Product Description Review: Very good - Easy to use ## Features - FAST, ACCURATE PH TESTING - Rapid dissolve Phenol Red tablets deliver precise pH readings between 6.8 and 8.4, ensuring safe pool, spa and hot tub water. Reliable colour change makes it easy to monitor pH balance so chlorine works effectively, maintaining bather comfort and helping prevent material damage from corrosion and precipitation. - IDEAL FOR POOLS, SPAS & HOT TUBS - Perfect for everyday water checks, these tablets help maintain balanced swimming pool and hot tub conditions. For best chlorine efficiency and comfort, keep pH at 7.0 - 7.4. Also suitable for light industrial water checks, ensuring consistent control across different water systems. - EASY FOR BEGINNERS & PROFESSIONALS - Pre-measured tablets remove the complexity of liquid reagents. Just push through the foil and add to your comparator for rapid results. Suitable for pool owners, leisure operators and technicians seeking fast action, accuracy and reliable water pH readings. - COMPATIBLE WITH TEST KITS & COMPARATORS - Developed for use in visual water testing systems, pool testers and comparators, these tablets slot easily into your regular water testing routine. A versatile addition to your pool testing kit, supporting consistent and repeatable water quality checks. - SAFE & PRECISE FORMULATION - Each tablet is blister-packed in an aluminium-lined foil cup for freshness, hygiene and easy handling. Made with thiosulphate to offset chlorine interference and boric-acid-free “green chemistry” for safer handling, they ensure accuracy and safety in every test. Readings may be affected by carbonate levels, alkalinity and temperature. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0C6MWYDHS | | Best Sellers Rank | 22,369 in Garden ( See Top 100 in Garden ) 53 in Pool & Hot Tub Testers | | Brand | TEST ALL WATER | | Country Of Origin | Germany | | Customer Reviews | 4.8 out of 5 stars 8 Reviews | | Manufacturer | Test All Water | | Manufacturer Part Number | 511791BT | | Material | Phenol Red | | Material Type | Phenol Red | | Model Number | 511791BT | | Recommended Uses For Product | pH, Swimming Pool Water, Spa Water, Industrial Water | | Recommended uses for product | pH, Swimming Pool Water, Spa Water, Industrial Water | | Sterility Rating | 6.8-8.4 | | Unit Count | 250.0 count | | Unit count | 250.0 count | | pH range | 6.8-8.4 | ## Product Details - **Brand:** TEST ALL WATER - **Manufacturer:** Test All Water - **Recommended uses for product:** pH, Swimming Pool Water, Spa Water, Industrial Water - **Unit count:** 250.0 count - **pH range:** 6.8-8.4 ## Images ![Phenol Red Rapid Dissolve Tablets | pH Test Range 6.8–8.4 | For Swimming Pools, Spas & Hot Tubs | Accurate Results for Comparators & Testers, Reliable Colour Change (250 Pack) - Image 1](https://m.media-amazon.com/images/I/71f1sZymwzL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very good *by M***L on 16 October 2025* Easy to use ## Frequently Bought Together - TEST ALL WATER - pH Phenol Red Rapid Dissolve Tablets | Fast, Accurate pH Testing 6.8-8.4 | Ideal for Pools, Spas, Industrial Use | 250 Pack - Lovibond - DPD No 1 Rapid Dissolve Tablets | Visual & Comparator Testing | Measures Bromine | Pool Water Testing Kit | 250 Tablets, DPD No 1 --- ## 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.co.uk/products/682994399-phenol-red-rapid-dissolve-tablets-ph-test-range-6-8](https://www.desertcart.co.uk/products/682994399-phenol-red-rapid-dissolve-tablets-ph-test-range-6-8) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-25*