--- product_id: 87519178 title: "Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each" price: "£24.63" currency: GBP in_stock: true reviews_count: 8 url: https://www.desertcart.co.uk/products/87519178-apera-instruments-ai1113-ph-calibration-buffer-solution-kit-7-00 store_origin: GB region: United Kingdom --- # ISO 9001:2015 certified production Double-sealed, 2-year shelf life ±0.01 pH accuracy Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each **Price:** £24.63 **Availability:** ✅ In Stock ## Summary > ⚡ Calibrate like a pro — precision that powers your performance! ## Quick Answers - **What is this?** Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - **How much does it cost?** £24.63 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/87519178-apera-instruments-ai1113-ph-calibration-buffer-solution-kit-7-00) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Lasting Freshness:** Double-sealed bottles with a 2-year unopened shelf life to keep your buffers pristine. - • **Seamless Documentation:** Downloadable MSDS and optional certificates of analysis for full compliance and peace of mind. - • **Precision You Can Trust:** Accurate to ±0.01 pH at 25°C, ensuring lab-grade calibration every time. - • **Effortless Identification:** Color-coded solutions for quick, error-free calibration in fast-paced environments. - • **Certified Quality Assurance:** Manufactured in an ISO 9001:2015 & ISO 17025:2017 accredited facility for unmatched reliability. ## Overview The Apera Instruments AI1113 pH Calibration Buffer Solution Kit offers ultra-precise pH calibration with ±0.01 accuracy at 25°C, produced under strict ISO certifications using high-purity reagents. Its color-coded, double-sealed 8 oz bottles ensure easy identification and a 2-year shelf life unopened, making it the go-to choice for professionals demanding reliable, traceable calibration standards. ## Description Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each. Apera pH calibration buffers are produced in an ISO 9001:2015 facility with ISO 17025:2017 accreditation using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment. Reported values are accurate to +/- 0.01 pH at 25°C and are traceable to NIST Standard Reference Materials (SRMs). MSDS documents are downloadable. Certificate of analysis can be achieved by request. All pH buffers have a 2-year expiration from manufacture for an unopened bottle. Review: great for the class room or plant pH control - Some plants need specific pH water to thrive. I use this to balance the number to where I want. ofcourse youll want to be in the lower ranges but they work great. Containers are well built and dont leak. I checked the pH with some strips and the levels were bang on. I thought for the price it was worth it. Review: Good Product - Seems to work well ## Features - Reported values are accurate to +/- 0.01 pH at 25 °C and are traceable to NIST Standard Reference Materials (SRMs). - Produced in an ISO 9001:2015 certified facility using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment. - color-coded for quick identification. - Double-sealed. 2-year expiration from manufacture for an unopened bottle. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.6 out of 5 stars 713 Reviews | ## Images ![Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - Image 1](https://m.media-amazon.com/images/I/71v2sp4uP8L.jpg) ![Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - Image 2](https://m.media-amazon.com/images/I/81QvYeBJ+hL.jpg) ![Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - Image 3](https://m.media-amazon.com/images/I/81vyCcXJl2L.jpg) ![Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - Image 4](https://m.media-amazon.com/images/I/71XsdV6YUkL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: What is the life span of the solution . Does it have an expiration date?** A: The lifespan of unopened pH buffer solutions (new batches) is two years, one year for the older batches. All of our solutions have expiration dates on the bottles. **Q: Do the buffers and storage solutions have a mold inhibitor?** A: no, I don't think it's have mold inhibitors **Q: Does this come with storage solution?** A: Yes a 4oz bottle of kci storage solution. It's in the pic and description. **Q: Do the buffers and storage solutions have a mold inhibitor?** A: I don't think so. ## Customer Reviews ### ⭐⭐⭐⭐⭐ great for the class room or plant pH control *by J***. on September 27, 2025* Some plants need specific pH water to thrive. I use this to balance the number to where I want. ofcourse youll want to be in the lower ranges but they work great. Containers are well built and dont leak. I checked the pH with some strips and the levels were bang on. I thought for the price it was worth it. ### ⭐⭐⭐⭐⭐ Good Product *by J***B on January 19, 2026* Seems to work well ### ⭐⭐⭐⭐⭐ Good value for pH references *by T***P on October 10, 2025* These are the go-to reference solutions for testing the acid levels in wine. This brand has a 2-year expiration date. The coloration of these references makes it easy to not mix them up. ## Frequently Bought Together - Apera Instruments AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes --- ## 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/87519178-apera-instruments-ai1113-ph-calibration-buffer-solution-kit-7-00](https://www.desertcart.co.uk/products/87519178-apera-instruments-ai1113-ph-calibration-buffer-solution-kit-7-00) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*