--- product_id: 37656452 title: "15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester" brand: "7pros" price: "Β£0.94" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/37656452-15-pack-ph-calibration-buffer-solution-powder-set-for-precise store_origin: GB region: United Kingdom --- # Precise Calibration 15 Pack Easy Mix 15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester **Brand:** 7pros **Price:** Β£0.94 **Availability:** βœ… In Stock ## Summary > 🌊 Dive into Precision with Every Drop! ## Quick Answers - **What is this?** 15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester by 7pros - **How much does it cost?** Β£0.94 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/37656452-15-pack-ph-calibration-buffer-solution-powder-set-for-precise) ## Best For - 7pros enthusiasts ## Why This Product - Trusted 7pros brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Unmatched Accuracy:** Achieve precise readings for pools, aquariums, and more. - β€’ **Professional Quality:** Perfect for both home and professional use, ensuring reliable results. - β€’ **Effortless Preparation:** Simply mix with distilled waterβ€”no measuring required! - β€’ **Cost-Effective Solution:** Long-term use with easy storage saves you time and money. - β€’ **Comprehensive Calibration:** Includes 4.00, 6.86, and 9.18 pH solutions for all your testing needs. ## Overview This 15 Pack pH Calibration Buffer Solution Powder Set provides everything you need for accurate pH meter calibration. Each set includes three essential pH solutions (4.00, 6.86, and 9.18) that can be easily mixed with distilled water, ensuring you have reliable calibration at your fingertips. Designed for long-term use, this set is perfect for maintaining the health of your pool, aquarium, or any water testing needs. ## Description Full description not available ## Features - FULL RANGE. You get 5 sets. Each set includes one package of 4.00, one of 6.86 and one of 9.18 calibration solution for all pH needs - FAST and EASY. No need to measure, just mix individual packs with distilled water. - ACCURACY. Calibration powders enable you to test the pH of your pool, aquarium, water, and more quickly with your pH tester / meter - LONG -TERM USE. Save time and money by mixing powders in a jar of distilled water. This lets you keep them longer and more readily available without needing more packets! ## Images ![15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester - Image 1](https://m.media-amazon.com/images/I/91VDtdtWavL.jpg) ![15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester - Image 2](https://m.media-amazon.com/images/I/513fzU5DcQL.jpg) ![15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester - Image 3](https://m.media-amazon.com/images/I/51k7MIEVw3L.jpg) ![15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester - Image 4](https://m.media-amazon.com/images/I/51cM4-RoJKL.jpg) ![15 Pack PH Calibration Buffer Solution Powder Set, for Precise pH Meter Calibration, Make 250 ml of Each 4.00pH, 6.86pH, and 9.18pH to calibrate Your PH Tester - Image 5](https://m.media-amazon.com/images/I/51fvGtHt9KL.jpg) ## Questions & Answers **Q: Include a calibracion certificate?** A: Hi, On the back of each packets are instructions on how mix the powders, calibration instructions are on pH meters. Kind regrads, 7Pros **Q: I received my box and there weren't any of the green 6.86 packets included. There were 10 of the 4.00 and 5 of the 9.18?** A: maybe there worker was colorblind. Yeah you cant calibrate your meter w/out them. Id call there support and stay on them **Q: Will it work with vantakool ph meter** A: We presume Yes. To be sure, check with your instructions that should come with the meter. It must say that you need ph 6.86, 4.00 (4.01) and 9.18 calibration powders to calibrate the meter... **Q: Are these packs a 1-and-done? or can you save the solution in a clean jar for future calibrations? my ph test kit only came with 1 of each of these.** A: Hello, You can store your calibration solutions for a while (2-4 weeks) and you can use them again. Make sure to cover the jars so the water doesn't evaporate and label your jars. Keep away from children, it is not for drinking. Kindest regards, 7Pros ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Product *by B***Y on January 4, 2021* Works as advertised. Will buy again. ### ⭐⭐⭐⭐⭐ Best value for accuracy *by Z***E on January 22, 2020* These are a must have to make accurate readings. Being able to buy in bulk is a plus since calibration is recommended frequently. They come in a small box which is great to keep them all in one place. Super easy to use. ### ⭐⭐⭐⭐ Four Stars *by R***K on August 24, 2017* Works well. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/37656452-15-pack-ph-calibration-buffer-solution-powder-set-for-precise](https://www.desertcart.co.uk/products/37656452-15-pack-ph-calibration-buffer-solution-powder-set-for-precise) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*