--- product_id: 1868495 title: "General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green" brand: "general hydroponics" price: "€ 26.01" currency: EUR in_stock: false reviews_count: 12 url: https://www.desertcart.hr/products/1868495-general-hydroponics-gh1552-ph-7-calibration-solution-for-gardening-1 store_origin: HR region: Croatia --- # 1-Quart Volume NaCl Scale Compatibility Precision Calibration General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green **Brand:** general hydroponics **Price:** € 26.01 **Availability:** ❌ Out of Stock ## Summary > 🌿 Elevate Your Grow Game with Precision Calibration! ## Quick Answers - **What is this?** General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green by general hydroponics - **How much does it cost?** € 26.01 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/1868495-general-hydroponics-gh1552-ph-7-calibration-solution-for-gardening-1) ## Best For - general hydroponics enthusiasts ## Why This Product - Trusted general hydroponics brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **User-Friendly:** Easy to use, making calibration a breeze for both novice and expert growers. - • **Quality Assurance:** Each batch is meticulously checked by technicians for consistent performance. - • **Eco-Friendly Solution:** Designed for sustainable gardening practices, aligning with your green values. - • **Precision Calibration:** Ensure your pH meters are always spot-on for optimal growth. - • **Universal Compatibility:** Works seamlessly with popular meter brands, making it a versatile choice. ## Overview The General Hydroponics GH1552 pH 7 Calibration Solution is a high-quality, 1-quart buffer designed for accurate calibration of pH meters. It is compatible with various popular brands and is rigorously tested for consistency, ensuring that your gardening efforts yield the best results. ## Description General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics® technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used. ## Features - For calibration of pH Meters and electrode storages - Package Weight: 1.043 kilograms - Package Dimensions: 8.382 L x 21.844 H x 8.382 W (centimeters) - Manufacturer: General Hydroponics ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0052YE2I0 | | Best Sellers Rank | #801,618 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #350 in Chemical Buffers | | Customer Reviews | 4.6 4.6 out of 5 stars (472) 4.6 out of 5 stars | | Item Model Number | GH1552 | | Item Weight | 0.01 ounces | | Manufacturer | Hawthorne Hydroponics, LLC | | Product Dimensions | 3.7 x 8.5 x 4.2 inches | ## Images ![General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green - Image 1](https://m.media-amazon.com/images/I/71sIMQRWKYL.jpg) ![General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green - Image 2](https://m.media-amazon.com/images/I/71gHwHBOsRL.jpg) ![General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green - Image 3](https://m.media-amazon.com/images/I/31RzmqLrGTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works as Expected - Good Value *by on Reviewed in the United States November 25, 2019* In my opinion the General Hydroponics brand is rock solid. I have used a lot of their nutrients and maintenance products and always find them to be the highest quality. This product is no exception.If you care about PH, and you should, regular testing and re-calibration of your meter is essential. For me the 7.0 is perfect since I operate in the 5.5-6.5 PH range. I used to use the 4.0 as well to verify the calibration settings but over time found the 7.0 to be sufficient. I was checking my meter once a month or so and it was not often enough so I decided to get the larger bottle so I can test my meter more often. I use the small paper Dixie cups you use in the bathroom for kids and toss them afterwards as it's best to not reuse the solution. This bottle should last a long time.Definitely recommend this for checking/calibrating any PH meter that has this feature. ### ⭐⭐⭐⭐⭐ Works as expected *by on Reviewed in the United States October 20, 2025* Used to calibrate my meters . No complaints ### ⭐⭐⭐⭐⭐ Easy to use calibration solution. *by on Reviewed in the United States January 27, 2019* The general hydroponics 7.0 PH solution is great for the meters that have a manual calibration screw. It’s so much easier than using the powdered packets. If you have an auto-calibrate meter, chances are, it’s set to calibrate to 6.86 I use about half of a shot glass before use on any of my pen type ph meters. This bottle lasts forever doing that way. --- ## 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.hr/products/1868495-general-hydroponics-gh1552-ph-7-calibration-solution-for-gardening-1](https://www.desertcart.hr/products/1868495-general-hydroponics-gh1552-ph-7-calibration-solution-for-gardening-1) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-15*