--- product_id: 37192609 title: "Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz" price: "€ 66.32" currency: EUR in_stock: true reviews_count: 12 url: https://www.desertcart.at/products/37192609-apera-instruments-ai1108-ph-calibration-buffer-solution-kit-for-ph store_origin: AT region: Austria --- # ISO 9001:2015 certified production 2-year unopened shelf life ±0.01 pH accuracy Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz **Price:** € 66.32 **Availability:** ✅ In Stock ## Summary > 🔬 Calibrate like a pro—because precision is the new power. ## Quick Answers - **What is this?** Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - **How much does it cost?** € 66.32 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/37192609-apera-instruments-ai1108-ph-calibration-buffer-solution-kit-for-ph) ## 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 keep your solutions ready when you are. - • **Precision You Can Trust:** Achieve lab-grade ±0.01 pH accuracy, ensuring your measurements are always spot-on. - • **Complete Calibration Kit:** Includes pH 4.00 & 7.00 buffers plus 3M KCL storage solution for comprehensive electrode care. - • **Effortless Identification:** Color-coded bottles speed up your workflow—no more guesswork during calibration. - • **Certified Quality Assurance:** Manufactured in an ISO 9001:2015 & ISO 17025:2017 accredited facility for unmatched reliability. ## Overview The Apera Instruments AI1108 pH Calibration Buffer Solution Kit delivers ultra-precise pH calibration with ±0.01 accuracy at 25°C, traceable to NIST standards. Produced in a rigorously controlled ISO-certified environment, this kit includes color-coded pH 4.00 and 7.00 buffers plus a 3M KCL storage solution, all double-sealed for a 2-year unopened shelf life. Ideal for professionals demanding reliable, hassle-free electrode calibration. ## Description Apera Instruments AI1108 pH Calibration Buffer Solution Kit (pH 4.00 & 7.00, 8oz. each), plus 4oz. 3M KCL Soaking Storage Solution for pH/ORP Electrodes. 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: Precision - Another excellent product I like to use it as a backup or if I just want to doublecheck my charts thank you so very much Review: Apera Calibration Solution could not be easier to use + it’s in code until Oct- 2025. - Had an older model Ph-80 that sat in a drawer for a year and had a dried out wick, Soaked it in the storage solution for 20 min cleaned it with distilled water calibrated first with 4.0 and it hit dead nuts then the 7.0 same thing. Fahrenheit was right at 67.0 degrees and I was happy I know these solutions are expensive and I don’t know why but it was the best deal on desertcart and it worked for me your mileage may vary but I had to give a positive review. The only thing I didn’t like is it was shipped in a Bag not an over Box for protection and I hate that for sure come on desertcart. ## 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 322 Reviews | ## Images ![Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - Image 1](https://m.media-amazon.com/images/I/61yq0Hm+aKL.jpg) ![Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - Image 2](https://m.media-amazon.com/images/I/71XsdV6YUkL.jpg) ![Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - Image 3](https://m.media-amazon.com/images/I/81vyCcXJl2L.jpg) ![Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - Image 4](https://m.media-amazon.com/images/I/61CHy2vNTZL.jpg) ![Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - Image 5](https://m.media-amazon.com/images/I/81QvYeBJ+hL.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 ### ⭐⭐⭐⭐⭐ Precision *by T***N on February 1, 2026* Another excellent product I like to use it as a backup or if I just want to doublecheck my charts thank you so very much ### ⭐⭐⭐⭐⭐ Apera Calibration Solution could not be easier to use + it’s in code until Oct- 2025. *by A***Y on December 24, 2023* Had an older model Ph-80 that sat in a drawer for a year and had a dried out wick, Soaked it in the storage solution for 20 min cleaned it with distilled water calibrated first with 4.0 and it hit dead nuts then the 7.0 same thing. Fahrenheit was right at 67.0 degrees and I was happy I know these solutions are expensive and I don’t know why but it was the best deal on Amazon and it worked for me your mileage may vary but I had to give a positive review. The only thing I didn’t like is it was shipped in a Bag not an over Box for protection and I hate that for sure come on Amazon. ### ⭐⭐⭐⭐⭐ Establish confidence and validate your measurements... it's good insurance *by R***U on May 11, 2017* Ordered the calibration kit with the storage solution. The kit was shipped promptly, packed well and arrived in a couple days. Having the different colors in the liquids does make it easier to work with and less chance of making errors. There's plenty of solution for my needs to maintain a commercial pool monitoring system. The storage solution is also being used for my ORP probe. The pH 7.0 reference can also be used to validate my Taylor daily pool water test kit. The acidic solution came with an extra foil seal to prevent leakage... good idea. This order was for two, so I'm giving the other away as a "gift" to a friend in the industry. ## Frequently Bought Together - Apera Instruments AI1108 pH Calibration Buffer Solution Kit for pH/ORP Electrodes, 4.00 & 7.00 pH, 4 oz & 8 oz - Apera Instruments 3M KCL Storage Soaking Solution (8 oz.) for pH and ORP Electrodes - Apera Instruments AI311 Premium Series PH60 Waterproof pH Pocket Tester Kit, Replaceable Probe, ±0.01 pH Accuracy, Lcd display --- ## 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.at/products/37192609-apera-instruments-ai1108-ph-calibration-buffer-solution-kit-for-ph](https://www.desertcart.at/products/37192609-apera-instruments-ai1108-ph-calibration-buffer-solution-kit-for-ph) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-06-02*