--- product_id: 74012676 title: "pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each" brand: "bluelab" price: "₨59530" currency: LKR in_stock: true reviews_count: 13 category: "Bluelab" url: https://www.desertcart.lk/products/74012676-ph-4-0-7-0-and-2-77-ec-solution store_origin: LK region: Sri Lanka --- # 500 ml bottles for long-term use Accurate 2.77 EC conductivity solution Precise pH calibration at 4.0 & 7.0 pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each **Brand:** bluelab **Price:** ₨59530 **Availability:** ✅ In Stock ## Summary > 🔬 Stay sharp, stay calibrated — precision that powers your growth. ## Quick Answers - **What is this?** pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each by bluelab - **How much does it cost?** ₨59530 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/74012676-ph-4-0-7-0-and-2-77-ec-solution) ## Best For - bluelab enthusiasts ## Why This Product - Trusted bluelab brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Experts:** Highly rated with 4.8 stars and top-ranked in electrolyte solutions for dependable results. - • **Triple Calibration Power:** Calibrate both pH and EC meters with three essential solutions for flawless accuracy. - • **Long-Lasting 500 ml Bottles:** Generous volume supports multiple calibrations, perfect for busy professionals. - • **Time-Saving Pre-Mixed Formula:** Ready-to-use solutions eliminate guesswork and speed up your calibration routine. - • **Consistent Plant Health Assurance:** Ensure nutrient balance and water quality with reliable meter performance every time. ## Overview Bluelab’s 500 ml calibration solutions for pH 4.0, 7.0, and 2.77 EC provide essential, pre-mixed liquids designed to maintain the accuracy of your pH and EC meters. Ideal for hydroponics and water quality monitoring, these solutions ensure consistent, reliable readings that protect plant health and optimize nutrient balance. Trusted by professionals and backed by excellent reviews, they simplify routine meter maintenance with long-lasting bottles for multiple calibrations. ## Description Bluelab pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each: desertcart.com: Industrial & Scientific Review: Gotta have it. - If your using a ph meter or dissolved solids meter this is a must have. Not cheap but accurate. If you want your grow to turn out right you need accurate info on your water ph and fertilizer strength. Don’t think you can compromise here. Not cheap but reliable. Review: Calibration fluids - Exactly what I expected ## Features - Includes pH 4.0, pH 7.0, and 2.77 EC conductivity solutions to fully calibrate and verify your pH and EC/PPM meters for consistent, reliable measurements - Regular calibration helps eliminate inaccurate readings that can impact plant health, nutrient balance, and water quality in hydroponics - Designed to confirm probe performance after cleaning, ensuring your meters are functioning correctly and delivering dependable results every time - Pre-mixed calibration solutions save time and reduce errors—simply pour and test for quick, hassle-free calibration - Each solution comes in a 500 ml bottle, ideal for routine maintenance, long-term use, and multiple calibrations ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07BRBJD77 | | Best Sellers Rank | #57,206 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Electrolyte Solutions | | Brand | Bluelab | | Brand Name | Bluelab | | Container Type | Bottle | | Customer Reviews | 4.8 out of 5 stars 337 Reviews | | Included Components | 1 Bluelab pH 4.0 Calibration Solution | | Item Form | Liquid | | Item Volume | 500 ml | | Manufacturer | Bluelab | | Model Number | BSL47C50AT | | Package Information | Bottle | | Part Number | BSL47C50AT | | UPC | 680666717124 | | Unit Count | 50.7 Fluid Ounces | | Volume | 500 ml | ## Product Details - **Brand:** Bluelab - **Item Form:** Liquid - **Item Volume:** 500 ml - **Package Information:** Bottle - **Unit Count:** 50.7 Fluid Ounces ## Images ![pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each - Image 1](https://m.media-amazon.com/images/I/717uGQpRECL.jpg) ![pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each - Image 2](https://m.media-amazon.com/images/I/81mNcCW-ndL.jpg) ![pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each - Image 3](https://m.media-amazon.com/images/I/7190L19cS-L.jpg) ![pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each - Image 4](https://m.media-amazon.com/images/I/71DiBNtO00L.jpg) ![pH 4.0, 7.0 and 2.77 EC Solution - 500 ml Each - Image 5](https://m.media-amazon.com/images/I/71HHSv1LbGL.jpg) ## Questions & Answers **Q: What is the difference between kcl storage solution and 2.77 ec conductivity standard solution?? both of them contain kcl and water..** A: It is actually 27.7 the description is a typo. Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each. Look at the label on the bottle. **Q: How long does the 7.0 and 4.0 solutions last once opened? I assume you pour out a little each time you calibrate. Is 70 F a good temp to store it?** A: I have had mine since February and I keep it under the sink in about70°. It seems to be just fine I also reuse my calibration solution as I am careful not to contaminate it ## Customer Reviews ### ⭐⭐⭐⭐⭐ Gotta have it. *by M***S on October 30, 2022* If your using a ph meter or dissolved solids meter this is a must have. Not cheap but accurate. If you want your grow to turn out right you need accurate info on your water ph and fertilizer strength. Don’t think you can compromise here. Not cheap but reliable. ### ⭐⭐⭐⭐⭐ Calibration fluids *by T***R on April 8, 2024* Exactly what I expected ### ⭐⭐⭐⭐⭐ Lighting fast shipping! *by E***5 on January 18, 2021* Exactly as described sealed bottles and Very fast shipping! Couldn't be more satisfied with purchase. ## Frequently Bought Together - Bluelab Calibration Solution pH 4.0, 7.0 and 2.77 EC Conductivity Solution, 500 ml Each - Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow White --- ## 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.lk/products/74012676-ph-4-0-7-0-and-2-77-ec-solution](https://www.desertcart.lk/products/74012676-ph-4-0-7-0-and-2-77-ec-solution) --- *Product available on Desertcart Sri Lanka* *Store origin: LK* *Last updated: 2026-11-13*