--- product_id: 352324653 title: "AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each" brand: "apera instruments" price: "£34.64" currency: GBP in_stock: true reviews_count: 5 category: "Apera Instruments" url: https://www.desertcart.co.uk/products/352324653-ai1113-ph-calibration-buffer-solution-kit-7-00-4-00 store_origin: GB region: United Kingdom --- # ±0.01 pH accuracy ISO 9001:2015 & ISO 17025:2017 certified 2-year sealed shelf life AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each **Brand:** apera instruments **Price:** £34.64 **Availability:** ✅ In Stock ## Summary > 🎯 Calibrate like a pro — precision that keeps you ahead of the curve! ## Quick Answers - **What is this?** AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each by apera instruments - **How much does it cost?** £34.64 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/352324653-ai1113-ph-calibration-buffer-solution-kit-7-00-4-00) ## Best For - apera instruments enthusiasts ## Why This Product - Trusted apera instruments brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete Transparency:** Downloadable MSDS and optional certificates of analysis keep your compliance game strong. - • **Long-Lasting Freshness:** Double-sealed bottles guarantee a 2-year shelf life unopened, perfect for busy professionals. - • **Color-Coded Convenience:** Quickly identify pH 4.00 and 7.00 buffers with intuitive color coding—no mix-ups, no delays. - • **Precision You Can Trust:** Accurate to ±0.01 pH at 25°C, ensuring lab-grade calibration every time. - • **Certified Quality Assurance:** Manufactured in ISO-certified facilities with traceability to NIST standards 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 9001:2015 and ISO 17025:2017 standards. Featuring color-coded, double-sealed 8 oz bottles with a 2-year unopened shelf life, this kit is trusted by professionals for reliable, hassle-free pH meter calibration. ## 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: 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: 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 | |---------------|-------| | ASIN | B074SQBC4K | | ASIN | B074SQBC4K | | Batteries Included? | No | | Batteries Required? | No | | Customer Reviews | 4.6 4.6 out of 5 stars (692) | | Customer reviews | 4.6 4.6 out of 5 stars (692) | | Cutting Diameter | 2 Inches | | Date First Available | 26 December 2017 | | Date First Available | 26 December 2017 | | Included components | AI1113 Solution Kit | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 226 g | | Item diameter | 2 Inches | | Item model number | AI1113 | | Item model number | AI1113 | | Manufacturer | Apera Instruments | | Manufacturer | Apera Instruments | | Material | HDPE (High Density Polyethylene) | | Measurement System | US | | Part number | AI1113 | | Product Dimensions | 5.08 x 20.32 x 5.08 cm; 226.8 g | | Shape | Round | | Style | pH 4, 7 (8oz.) | ## Images ![AI1113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. Each - Image 1](https://m.media-amazon.com/images/I/71v2sp4uP8L.jpg) ## 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 ### ⭐⭐⭐⭐⭐ Review *by J***. on 27 September 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. ### ⭐⭐⭐⭐⭐ Review *by J***B on 19 January 2026* Seems to work well ### ⭐⭐⭐⭐⭐ Review *by T***P on 10 October 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/352324653-ai1113-ph-calibration-buffer-solution-kit-7-00-4-00](https://www.desertcart.co.uk/products/352324653-ai1113-ph-calibration-buffer-solution-kit-7-00-4-00) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-17*