--- product_id: 725752784 title: "8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1" brand: "アペラ インスツルメンツ(apera instruments)" price: "COP 395310" currency: COP in_stock: true reviews_count: 5 category: "アペラ インスツルメンツ(Apera Instruments)" url: https://www.desertcart.co/products/725752784-8oz-ph-calibration-buffer-solution-kit-for-ph-4-00 store_origin: CO region: Colombia --- # 8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1 **Brand:** アペラ インスツルメンツ(apera instruments) **Price:** COP 395310 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** 8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1 by アペラ インスツルメンツ(apera instruments) - **How much does it cost?** COP 395310 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/725752784-8oz-ph-calibration-buffer-solution-kit-for-ph-4-00) ## Best For - アペラ インスツルメンツ(apera instruments) enthusiasts ## Why This Product - Trusted アペラ インスツルメンツ(apera instruments) brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Apera Instruments AI113 pH Calibration Buffer Solution Kit (7.00, 4.00), 8 oz. each The Apera pH calibration buffer is ISO 17025:2017 certified in an ISO 9001:2015 facility and is manufactured in a temperature controlled environment using high purity reagents, deionized water and a certified analytical balance. Reported values are accurate to +/- 0.01 pH at 25°C and can be tracked to NIST Standard Reference Material (SRM). MSDS document can be downloaded. COA is available upon request. All pH buffers have a 2 year expiration date from the manufacturing of unopened bottles 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B074SQBC4K | | Amazon Bestseller | #345,759 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #812 in Lab pH Meters | | Batteries Included | No | | Batteries Required? | No | | Customer Reviews | 4.6 4.6 out of 5 stars (692) | | Cutting Diameter | 2 Inches | | Date First Available | December 26, 2017 | | Is Discontinued By Manufacturer | No | | Item Diameter | 2 Inches | | Item Dimensions LxWxH | 5.1 x 20.3 x 5.1 cm | | Item Weight | 226 g | | Manufacturer | Apera Instruments, LLC | | Material | HDPE (High Density Polyethylene) | | Measurement System | US | | Part number | AI1113 | | Pattern | Lab Supplies | | Style | pH4, 7 (8 oz) | ## Images ![8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1 - Image 1](https://m.media-amazon.com/images/I/71v2sp4uP8L.jpg) ![8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1 - Image 2](https://m.media-amazon.com/images/I/81QvYeBJ+hL.jpg) ![8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1 - Image 3](https://m.media-amazon.com/images/I/81vyCcXJl2L.jpg) ![8oz pH Calibration Buffer Solution Kit for pH 4.00 & 7.00 + 4oz 3M KCL Storage Solution pH/ORP Electrode AI1113 1 - 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 ### ⭐⭐⭐⭐⭐ Review *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. ### ⭐⭐⭐⭐⭐ Review *by J***B on January 19, 2026* Seems to work well ### ⭐⭐⭐⭐⭐ Review *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/products/725752784-8oz-ph-calibration-buffer-solution-kit-for-ph-4-00](https://www.desertcart.co/products/725752784-8oz-ph-calibration-buffer-solution-kit-for-ph-4-00) --- *Product available on Desertcart Colombia* *Store origin: CO* *Last updated: 2026-05-11*