--- product_id: 490793065 title: "STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow" brand: "bluelab" price: "A$74" currency: AUD in_stock: true reviews_count: 5 category: "Bluelab" url: https://www.desertcart.com.au/products/490793065-stsol120-kcl-storage-solution-120ml-ph-probe-and-pen-maintain store_origin: AU region: Australia --- # 120ml precision hydration lab-grade KCl formula extends probe lifespan STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow **Brand:** bluelab **Price:** A$74 **Availability:** ✅ In Stock ## Summary > 💧 Keep your pH game sharp—hydrate, store, and conquer with Bluelab’s KCl solution! ## Quick Answers - **What is this?** STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow by bluelab - **How much does it cost?** A$74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/490793065-stsol120-kcl-storage-solution-120ml-ph-probe-and-pen-maintain) ## 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 - • **Lab-Grade KCl Solution:** Formulated to industry-leading standards for consistent, reliable pH probe performance. - • **Seamless Compatibility:** Specifically crafted for Bluelab pH pens and probes, ensuring perfect synergy with your hydroponic tools. - • **Grow Smarter, Not Harder:** Maintain your pH probes effortlessly and avoid costly replacements—because dry probes die! - • **Precision Hydration in Every Drop:** 120ml bottle designed for easy storage and monthly maintenance to boost response time. - • **Maximize Your pH Probe’s Lifespan:** Keep your Bluelab pH pens and probes hydrated to ensure peak accuracy and durability. ## Overview Bluelab’s STSOL120 KCl Storage Solution is a 120ml lab-grade liquid designed to hydrate and store Bluelab pH pens and probes. By preventing drying, it extends probe lifespan and improves measurement accuracy, making it an essential maintenance tool for hydroponic, soil, and water pH monitoring. ## Description The perfect solution to store and hydrate your Bluelab pH products. It is extremely important to care for and store pH probes correctly. pH probes are sensitive glass instruments which age through normal use. The life and performance of pH probes is reduced heavily when they are stored dry. Bluelab pH Probe KCI Storage Solution is made specifically for use with Bluelab pH products. It is designed to increase response time and maximize the life of Bluelab pH pens and pH probes. For best results, use the KCI solution to store the pH pen/probe after use and hydrate monthly. Instructions are on the label of the bottle. Bluelab pH probe KCI Storage Solution is manufactured to high laboratory standards. Remember - keep your pH probe wet. Always. If it dries, it dies! . Review: Item good! - Good! 🙂 Review: Reputable - Great product ## Features - Simply add KCl solution to the cap of the pH pen and pH probe for storage and hydration to extend their life and improve accuracy for precise pH up and down adjustments - Designed for use with Bluelab pH pens, Bluelab soil pH pens, Bluelab pH probes and Bluelab soil pH probes - Try Bluelab TDS (PPM) meter, tester and other hydroponics tools for full garden nutrient monitoring in water and soil - KIT INCLUDES: 1 bottle of storage solution at 120ml, Instructions are on the label of the bottle - Supplied by Bluelab, the industry leader in hydroponic testing equipment, built for growers ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B098GZ8S42 | | Brand | Bluelab | | Brand Name | Bluelab | | Container Type | Bottle | | Customer Reviews | 4.7 out of 5 stars 499 Reviews | | Item Form | Liquid | | Item Weight | 0.14 Kilograms | | Item form | Liquid | | Item volume | 120 Milliliters | | Item weight | 0.14 Kilograms | | Manufacturer | Bluelab | | Model Number | STSOL120 | | Package information | Bottle | | Part Number | STSOL120 | | Unit Count | 4.05 Fluid Ounces | | Unit count | 4.05 Fluid Ounces | | Volume | 120 Milliliters | ## Product Details - **Brand:** Bluelab - **Item weight:** 0.14 Kilograms - **Item volume:** 120 Milliliters - **Package information:** Bottle - **Item form:** Liquid ## Images ![STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow - Image 1](https://m.media-amazon.com/images/I/71N1BPlujNL.jpg) ## Questions & Answers **Q: This product is named as ph probe soil tester, while the picture is of the kci storage solution? which product is this?** A: The probe end of the pH tester needs to be protected when not in use. This stuff is what's use the store the probe in. **Q: How long does a 100ml bottle last, if using the probe once a day?** A: As long as the cap has solution in it (glass bulb is immersed) when stored, then it should last at least a year. You may need to top it up from time to time, but you shouldn't be rinsing or tipping the contents of the cap out on each use. **Q: This item description is for soil testing however the item pictured is the kcl storage solution. which product is it?** A: This is KCl storage solution. I have submitted incorrect Product name to the seller. **Q: What exactly is the solution? Thanks** A: it helps in keeping the the test probe from drying out .i highly recommend it been using the same blue lab ph pen for over a year and id like to think its from storing it properly. blue lab is the way to go ## Customer Reviews ### ⭐⭐⭐⭐⭐ Item good! *by S***N on 10 March 2026* Good! 🙂 ### ⭐⭐⭐⭐⭐ Reputable *by T***. on 8 June 2026* Great product ### ⭐⭐⭐⭐⭐ La précision *by P***R on 5 May 2022* Excellent abordable et bon produit ## Frequently Bought Together - Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow - Bluelab BLU8000 PENGTB Grower's Toolbox with pH --- ## 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.com.au/products/490793065-stsol120-kcl-storage-solution-120ml-ph-probe-and-pen-maintain](https://www.desertcart.com.au/products/490793065-stsol120-kcl-storage-solution-120ml-ph-probe-and-pen-maintain) --- *Product available on Desertcart Australia* *Store origin: AU* *Last updated: 2026-07-06*