--- product_id: 104728301 title: "Apera Instruments pH Calibration Solution 4.01/7.00 each 250 ml, AI1113" brand: "apera instruments" price: "€ 53.59" currency: EUR in_stock: true reviews_count: 4 url: https://www.desertcart.at/products/104728301-apera-instruments-ph-calibration-solution-4-01-7-00-each store_origin: AT region: Austria --- # 3-year shelf life Β±0.015 pH accuracy 2x 250ml calibration buffers Apera Instruments pH Calibration Solution 4.01/7.00 each 250 ml, AI1113 **Brand:** apera instruments **Price:** € 53.59 **Availability:** βœ… In Stock ## Summary > πŸ§ͺ Calibrate like a pro β€” precision that keeps you ahead of the curve! ## Quick Answers - **What is this?** Apera Instruments pH Calibration Solution 4.01/7.00 each 250 ml, AI1113 by apera instruments - **How much does it cost?** € 53.59 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/104728301-apera-instruments-ph-calibration-solution-4-01-7-00-each) ## 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 - β€’ **Ready When You Are:** Pre-mixed, no powder prepβ€”start calibrating immediately - β€’ **Precision Perfected:** Calibrate with Β±0.015 pH accuracy for lab-grade confidence - β€’ **Color-Coded Convenience:** Instantly identify pH4 (Red) and pH7 (Green) solutions without guesswork - β€’ **Trusted Global Standard:** Backed by 30+ years of innovation and 4.6-star user approval - β€’ **Long-Lasting Reliability:** Up to 3 years shelf life keeps your calibration kit ready for action ## Overview The Apera Instruments AI1113 pH Calibration Solution Kit includes two 250ml bottles of highly accurate pH buffer solutions (4.01 and 7.00) with Β±0.015 pH precision. Color-coded for easy identification and ready-to-use without mixing, these solutions offer up to 3 years of shelf life, making them a reliable choice for professionals demanding consistent, lab-grade calibration. ## Description From the manufacturer Apera Instruments pH Calibration Solution About us We have been focusing on the development of water analysis instruments and sensors since 1991. Our sensor and electronics technologies have gained recognition in over 50 countries across America, Asia, and Europe. For over 30 years, we have always been dedicated to providing more reliable, accurate, and user-friendly water analysis instruments, a goal we continue to strive for. 4.01/7.00 (each 250 ml) The Apera Instruments AI1113 pH Calibration Buffer Solution Kit includes two 250ml bottles of pH buffer solutions (pH 4. 01 & pH 7. 00). PH 4. 01 and pH7. 00, each with 250ml Precise calibration: The accuracy of pH 0. 015 allows highly accurate calibration Simple: the right solution can be recognised by the colours (PH4: Red; pH7: Green) The solution can be used immediately Up to 3 years shelf life Review: does the job. - works fine Review: quality - It does what it suppose to do ## Features - PH4.01 and pH7.00, each with 250ml - Precise calibration: The accuracy of pH 0.015 allows highly accurate calibration - Simple: using the colours can be recognised the right solution by the (PH4: Red; pH7: Green) - Immediately use: Detach To Powder in distilled water instead of, you can immediately use the solution - Long lifetime: up to 3 years shelf life. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FN9W3TW | | Best Sellers Rank | 77,235 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 131 in Lab pH Meters | | Brand | Apera Instruments | | Container Type | Bottle | | Customer Reviews | 4.6 out of 5 stars 523 Reviews | | Global Trade Identification Number | 00810214030881 | | Included Components | 1 set of Calibration Solutions (1 bottle each) | | Item Form | Powder | | Item form | Powder | | Item volume | 500 Millilitres | | Manufacturer | Apera Instruments (Europe) GmbH | | Package information | Bottle | | UPC | 810214030881 | | Unit Count | 1.0 Count | | Volume | 500 Millilitres | ## Product Details - **Brand:** Apera Instruments - **Item volume:** 500 Millilitres - **Package information:** Bottle - **Item form:** Powder - **Manufacturer:** Apera Instruments (Europe) GmbH ## Images ![Apera Instruments pH Calibration Solution 4.01/7.00 each 250 ml, AI1113 - Image 1](https://m.media-amazon.com/images/I/51VdsoBGxUL.jpg) ## Questions & Answers **Q: Do these come with a certificate of analysis?** A: Yes, the certificate can be downloaded online by entering the batch number. **Q: Has the usa standard for calibration changed to 4.01 from 4.0 at 25deg? my kit came with a bottle of 4.0 originally?** A: No, the USA standard has not been changed. The kit comes standard with PH4.00. For the calibration it makes no difference whether you use the supplied PH 4.00 solution or the PH 4.01 solution from this set. **Q: how many uses do you get out of the bottles? (trying to compare it to powder sachets)** A: Dear customer, the solutions can be reused 10-15 times and do not need to be disposed after each calibration. We recommend filling the required amount of the solution into a calibration bottle or the CalBox (available separately) and closing it after use. After repeated use, the contaminated solution should then be replaced with a fresh one. Best regards The Apera Instruments Team ## Customer Reviews ### ⭐⭐⭐⭐⭐ does the job. *by M***N on 9 December 2024* works fine ### ⭐⭐⭐⭐⭐ quality *by P***A on 12 April 2022* It does what it suppose to do ### ⭐⭐⭐⭐⭐ Great size *by G***A on 7 June 2020* Perfect to calibrate my pool ph kit --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/104728301-apera-instruments-ph-calibration-solution-4-01-7-00-each](https://www.desertcart.at/products/104728301-apera-instruments-ph-calibration-solution-4-01-7-00-each) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-27*