--- product_id: 2872346 title: "C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue" brand: "hm digital" price: "AED 56" currency: AED in_stock: true category: "Hm Digital" url: https://www.desertcart.ae/products/2872346-c342-tds-and-ec-calibration-solution-342-ppm-nacl-90 store_origin: AE region: United Arab Emirates --- # Foam liner seal for purity 90 ml lightweight HDPE bottle 342 ppm NaCl precision C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue **Brand:** hm digital **Price:** AED 56 **Availability:** ✅ In Stock ## Summary > 🔬 Calibrate like a pro, measure like a boss! ## Quick Answers - **What is this?** C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue by hm digital - **How much does it cost?** AED 56 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/2872346-c342-tds-and-ec-calibration-solution-342-ppm-nacl-90) ## Best For - hm digital enthusiasts ## Why This Product - Trusted hm digital brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Recalibration:** Maintain peak accuracy of your HM Digital TDS or Water Quality Tester with minimal hassle. - • **Trusted by Industry Leaders:** Ranked #4 in Electrolyte Solutions, join thousands who rely on HM Digital. - • **Precision-Calibrated 342 ppm NaCl:** Ensure your TDS meter delivers spot-on water quality readings every time. - • **Compact & Lightweight 90 ml Bottle:** Easy to handle and store, perfect for on-the-go professionals. - • **Foam-Lined Seal for Ultimate Purity:** Keeps calibration solution uncontaminated and reliable. ## Overview The HM Digital C342 Calibration Solution is a 342 ppm NaCl liquid designed to precisely recalibrate HM Digital TDS meters and water quality testers. Packaged in a 90 ml lightweight HDPE bottle with a foam-lined seal, it ensures purity and accuracy for reliable water testing results. Highly rated and trusted in the scientific community, this solution is essential for maintaining professional-grade measurement standards. ## Description Product Description TDS Meter NaCl Calibration Solution C-342. From the Manufacturer TDS Meter NaCl Calibration Solution C-342. ## Features - NaCl calibration solution, available in 342 ppm or 1000 ppm - Comes in lightweight HDPE plastic bottles - Sealed with a coated foam liner - Use the HM Digital TDS Calibration Solution (342 PPM) to periodically re-calibrate your HM Digital TDS meter or HM Digital Water Quality Tester - This HM Digital TDS Calibration Solution is also known as Water Tester Solution andTDS Meter Calibration Solution - The C-342 is NaCl solution (342 PPM) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001VE99X8 | | Best Sellers Rank | #23,130 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Electrolyte Solutions | | Brand Name | HM Digital | | Container Type | Bottle | | Customer Reviews | 4.4 4.4 out of 5 stars (877) | | Global Trade Identification Number | 00891144000014 | | Item Form | Liquid | | Item Weight | 100 g | | Manufacturer | HM Digital, Inc. | | Model Number | C-342 | | Part Number | C342 | | UPC | 891144000014 | | Unit Count | 1 Count | | Volume | 90 ml | ## Product Details - **Brand:** HM Digital - **Item Form:** Liquid - **Item Volume:** 90 ml - **Item Weight:** 100 g - **Package Information:** Bottle ## Images ![C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue - Image 1](https://m.media-amazon.com/images/I/61U5LTc9u8L.jpg) ![C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue - Image 2](https://m.media-amazon.com/images/I/71o0Ok-W+WL.jpg) ## Questions & Answers **Q: What is the shelf life?** A: Room temp. indefinitely. You will use it up before it gets really old. **Q: Whats the ppm at 19 degree Celsius? or 18.6? The box only states the ppm of the solution at 25C which is is 342 ppm** A: I doubt the actual PPM is much different between 19C and 25C. TDS/EC meters are typically sensitive to temperature and some include a temperature sensor for automatic correction. Others that don't automatically compensate for temperature and may need a "look-up" to correct during the calibration. In either case, the reference solution concentration probably doesn't change much as a function of temperature. Good luck with your TDS calibration! **Q: Can you mix this with 1000 solution to get 680ish ppm mix?** A: All you need to do to create a 680 ppm test solution is add .068 grams of table salt to 100ml of distilled or RODI water and dissolve and viola you have a 680 ppm test solution. **Q: What screwdriver is used to calibrate this meter? The little ones I've used don't turn anything.** A: Usually there is a small area on the back of the meter that takes a tiny Phillips head screwdriver. You would put the meter in the solution and then use the screwdriver to make sure it's reading 342. ## Frequently Bought Together - HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue - HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Resolution, +/- 2% Readout Accuracy - HM Digital 1000ppm TDS Calibration Solution --- ## 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.ae/products/2872346-c342-tds-and-ec-calibration-solution-342-ppm-nacl-90](https://www.desertcart.ae/products/2872346-c342-tds-and-ec-calibration-solution-342-ppm-nacl-90) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-07-29*