--- product_id: 607214660 title: "16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox" brand: "apera instruments" price: "€ 0.25" currency: EUR in_stock: false reviews_count: 5 url: https://www.desertcart.at/products/607214660-16oz-ph-calibration-buffer-solution-kit-ph-4-00-7 store_origin: AT region: Austria --- # ±0.01 pH accuracy Includes 3M KCL storage solution 1-Year shelf life, double-sealed 16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox **Brand:** apera instruments **Price:** € 0.25 **Availability:** ❌ Out of Stock ## Summary > 🔬 Elevate your pH game—calibrate like a pro, every time! ## Quick Answers - **What is this?** 16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox by apera instruments - **How much does it cost?** € 0.25 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/607214660-16oz-ph-calibration-buffer-solution-kit-ph-4-00-7) ## 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 - • **CalBox Included:** Keep your calibration kit organized and spill-free with Apera’s unique CalBox. - • **Probe Protection:** 3M KCL storage solution maintains probe sensitivity and accuracy over time. - • **Extended Freshness:** 1-year shelf life ensures your solutions stay reliable and ready. - • **Precision Perfected:** Calibrate with ±0.01 pH accuracy for lab-grade confidence. - • **Color-Coded Convenience:** Quick, mess-free calibration with double-sealed, color-coded bottles. ## Overview This 16oz pH Calibration Buffer Solution Kit by Apera Instruments offers ultra-precise calibration with ±0.01 pH accuracy, standardized against NIST references. It includes three color-coded buffer solutions (pH 4.00, 7.00, and 10.01), a 3M KCL storage solution to extend probe life, and a unique CalBox for organized, mess-free calibration. Designed for professionals demanding accuracy and convenience, it features a 1-year shelf life and is non-hazardous for safe handling. ## Description 16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox : desertcart.co.uk: Business, Industry & Science Review: Works as intended for my ph meter. Great design for solution storage and ph meter holder. Review: desertcart package was fine .. the apera box was fine that everything came in.. but the calibration 10.1 bottle was open an leaked about 3" down.. the 4.0 bottle was down 2" and the 7.0 bottle was down and inch from top. Only bottle that was sealed was the storage liquid ... not happy, not ordering from flamingo again ## Features - High accuracy (±0.01 pH): standardized against NIST Certified pH references within 0.01 pH at 25˚c (77˚f). ideal for the calibration of all kinds of pH meters - Color-coded, double-sealed, 1-Year shelf life. Expiration Date and temperature/pH reference chart provided for reference - Apera's unique cal box included, No more mess for your meter's calibration - The 3M KCL storage solution helps keep the sensitivity and accuracy of your pH probes - Non-hazardous product (MSDS is downloadable) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01N9I9INZ | | Batteries Required? | No | | Batteries included? | No | | Customer Reviews | 4.4 4.4 out of 5 stars (90) | | Date First Available | 16 Dec. 2016 | | Item Package Quantity | 1 | | Item Weight | 481 g | | Item model number | AI1104 | | Manufacturer | Apera Instruments, LLC | | Material | HDPE (High Density Polyethylene) | | Measurement System | US | | Part number | AI1104 | | Product Dimensions | 5.08 x 5.08 x 20.32 cm; 481.94 g | | Style | pH 4, 7& 10 (16oz.) | ## Images ![16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox - Image 1](https://m.media-amazon.com/images/I/71sFDSPDZTL.jpg) ![16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox - Image 2](https://m.media-amazon.com/images/I/71ee5480OsL.jpg) ![16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox - Image 3](https://m.media-amazon.com/images/I/61CHy2vNTZL.jpg) ![16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox - Image 4](https://m.media-amazon.com/images/I/61iXjGAjXJL.jpg) ![16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox - Image 5](https://m.media-amazon.com/images/I/61YEmY4cHGL.jpg) ## Questions & Answers **Q: Most of these kits are currently out of stock. is there an eta or more stock, please? thanks.** A: I don’t have any information you can call apera instruments they should be able to help you with your inquiry. **Q: Why can't i bay this calibration kit and get it delivered to silkeborg denmark, when i can bay the apera pc60 and get it delivered. it doesn't make se** A: Perhaps this company doesn't have an export license? **Q: Does refrigeration after opening extend life of solutions?** A: I never had and it's been fine. **Q: Would the buffer solutions and storage solution work with the Extech pH meter?** A: I would think it would work with your meter providing what you are trying to buffer falls within that range. The storage solution should work with all meters. I would contact Extech and confirm with them to be 100% certain. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by A***R on 1 November 2025* Works as intended for my ph meter. Great design for solution storage and ph meter holder. ### ⭐ Review *by S***S on 7 May 2025* Amazon package was fine .. the apera box was fine that everything came in.. but the calibration 10.1 bottle was open an leaked about 3" down.. the 4.0 bottle was down 2" and the 7.0 bottle was down and inch from top. Only bottle that was sealed was the storage liquid ... not happy, not ordering from flamingo again ### ⭐⭐⭐⭐ Review *by I***Y on 31 July 2020* This is a great set for calibrating your PH meters. It came with 3 buffers, storage solution and a solution storage case (CalBox). I really like the CalBox. It makes it so much easier to calibrate my PH meter. Juggling small bottles is no fun. I also used one of the complements for distilled water. The only complaint I have is the CalBox lids aren’t water tight. If you do happen to turn it over, some will leak out. Its not a fatal flaw, just annoying. I was hoping to be able to drain one of the compartments as needed but its pretty much all or none. Otherwise I am very happy with the set! ## Frequently Bought Together - Apera Instruments, LLC-AI1104 16oz. pH Calibration Buffer Solution Kit (pH 4.00, 7.00 & 10.01), plus 3M KCL Storage Solution and CalBox - 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/607214660-16oz-ph-calibration-buffer-solution-kit-ph-4-00-7](https://www.desertcart.at/products/607214660-16oz-ph-calibration-buffer-solution-kit-ph-4-00-7) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-25*