--- product_id: 3820073 title: "- R161126 pH Solution Phenol Red with Chlorine Neutralizer, 16-Ounce" brand: "pentair" price: "£31.09" currency: GBP in_stock: true reviews_count: 8 category: "Pentair" url: https://www.desertcart.co.uk/products/3820073-r161126-ph-solution-phenol-red-with-chlorine-neutralizer-16-ounce store_origin: GB region: United Kingdom --- # pH Solution 16 oz Volume Chlorine Neutralizer - R161126 pH Solution Phenol Red with Chlorine Neutralizer, 16-Ounce **Brand:** pentair **Price:** £31.09 **Availability:** ✅ In Stock ## Summary > 🔬 Elevate Your Lab Game with Phenol Red! ## Quick Answers - **What is this?** - R161126 pH Solution Phenol Red with Chlorine Neutralizer, 16-Ounce by pentair - **How much does it cost?** £31.09 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/3820073-r161126-ph-solution-phenol-red-with-chlorine-neutralizer-16-ounce) ## Best For - pentair enthusiasts ## Why This Product - Trusted pentair brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Design:** Easily fits in your lab space with dimensions of 7-3/4" x 10-1/4" x 8-1/2". - • **Generous 16 oz Size:** More solution means fewer refills and more experiments. - • **Chlorine Neutralization:** Effectively neutralizes chlorine for reliable results. - • **Single Pack Convenience:** One bottle, endless possibilities for your testing needs. - • **Precision pH Measurement:** Ensure accurate readings with our phenol red solution. ## Overview The Pen Reagent Phenol RED is a 16-ounce pH solution designed for precise measurements and effective chlorine neutralization, making it an essential tool for any laboratory. Its compact size ensures it fits seamlessly into your workspace, while the single pack offers convenience for all your testing requirements. ## Description pH Solution phenol red with chlorine neutralizer. 16-ounces solution bottle. Includes 1 per pack. Measures 7-3/4-inch length by 10-1/4-inch height by 8-1/2-inch width. Review: Affordable - This makes pool test much more affordable Review: Refill your 1/2 oz. or 1 oz. bottles! - Quick delivery clear across the country and I can refill my 1 oz. bottle easily and economically for spa testing. ## Features - pH Solution phenol red with chlorine neutralizer - 16-ounces solution bottle - Includes 1 per pack - Measures 7-3/4-inch length by 10-1/4-inch height by 8-1/2-inch width ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008HYNX2S | | Best Sellers Rank | #309,105 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #750 in Swimming Pool Chlorine | | Brand | Pentair | | Brand Name | Pentair | | Customer Reviews | 3.8 out of 5 stars 28 Reviews | | Global Trade Identification Number | 00788379003258 | | Item Form | Liquid | | Manufacturer | Pentair | | Manufacturer Part Number | R161126 | | Model Number | R161126 | | Number of Items | 1 | | Number of Packs | 1 | | Product Benefits | Maintains pool and spa pH balance for cleaner, safer water | | UPC | 788379003258 | | Unit Count | 16.0 Fluid Ounces | ## Product Details - **Brand:** Pentair - **Item Form:** Liquid - **Product Benefits:** Maintains pool and spa pH balance for cleaner, safer water - **UPC:** 788379003258 - **Global Trade Identification Number:** 00788379003258 ## Images ![- R161126 pH Solution Phenol Red with Chlorine Neutralizer, 16-Ounce - Image 1](https://m.media-amazon.com/images/I/71hIWUK676L.jpg) ## Questions & Answers **Q: can i use with all clear test? i was adding 5 drops and comparing on strip. sounds like i can't.** A: Should work the same. If you used five drops before, you should receive similar results. Normal ranger is 7.4 to 7.6. **Q: does this replace small bottles of pleonol red where you just put 3 drops in test kit or is it to be used in special test kits where U need 2 mix** A: This is a large bottle of the same thing, you can use it to refill your little dropper bottle. As long as you are using the Pentair Rainbow brand already. The Pentair Rainbow brand OTO is the clear of this test. You cannot mix brands the test will not be accurate. **Q: What is the concentration of Phenol Red in this solution?** A: I did not see anything on the bottle that would answer your question. I found it to be less concentrated than the standard Phenol Red that comes with test kits. It does have a Chlorine stabilizer in it. I found through the trial and error method, that in using the same test vial for chlorine and putting in 7 drops as opposed to the recommended 5, the reading was the same as the reading using 5 drops in the larger PH vial in the test kit with the solution I saved from the kit so I could make the comparisons. It took a few trials, but the money saved was worth it because you get the neutralizer already in the solution so you need not buy that separately. It does not come with a eyedropper so you will need to get one or (not recommended) pour some into the vial that came with your test kit. Hope this helps. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Affordable *by J***Y on February 27, 2026* This makes pool test much more affordable ### ⭐⭐⭐⭐⭐ Refill your 1/2 oz. or 1 oz. bottles! *by N***N on June 24, 2020* Quick delivery clear across the country and I can refill my 1 oz. bottle easily and economically for spa testing. ### ⭐⭐⭐⭐⭐ Color me Red *by C***Y on February 6, 2016* Great price for the product. It's cheaper than other places. --- ## 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/3820073-r161126-ph-solution-phenol-red-with-chlorine-neutralizer-16-ounce](https://www.desertcart.co.uk/products/3820073-r161126-ph-solution-phenol-red-with-chlorine-neutralizer-16-ounce) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-23*