--- product_id: 54009866 title: "HM Digital 342ppm TDS Calibration Solution (a.k.a Water Testing Solution) 3 fl oz (90 ml)" brand: "hm digital" price: "SAR 96" currency: SAR in_stock: true reviews_count: 8 category: "Hm Digital" url: https://www.desertcart.com.sa/products/54009866-hm-digital-342ppm-tds-calibration-solution-a-k-a-water store_origin: SA region: Saudi Arabia --- # 342 PPM NaCl precision Sealed with foam liner for freshness Calibrates TDS meters accurately HM Digital 342ppm TDS Calibration Solution (a.k.a Water Testing Solution) 3 fl oz (90 ml) **Brand:** hm digital **Price:** SAR 96 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of water quality with precision calibration that professionals trust! ## Quick Answers - **What is this?** HM Digital 342ppm TDS Calibration Solution (a.k.a Water Testing Solution) 3 fl oz (90 ml) by hm digital - **How much does it cost?** SAR 96 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/products/54009866-hm-digital-342ppm-tds-calibration-solution-a-k-a-water) ## 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 - • **Trusted by Pros:** Used by water quality experts and even window cleaners who demand consistent, accurate results. - • **Eco-Smart Packaging:** Durable, recyclable HDPE plastic bottle designed for repeated use and minimal waste. - • **Precision Perfected:** Calibrate your TDS meter with exact 342 PPM NaCl solution for reliable water quality readings every time. - • **Lightweight & Portable:** Compact 90 ml HDPE bottle fits effortlessly in your toolkit or lab bag for on-the-go recalibration. - • **Long-Lasting Freshness:** Foam-lined sealed cap ensures solution integrity, so your calibration stays accurate session after session. ## Overview The HM Digital 342ppm TDS Calibration Solution is a 90 ml NaCl-based liquid designed to recalibrate HM Digital TDS meters for precise water quality testing. Packaged in a lightweight, foam-sealed HDPE bottle, it ensures long-lasting accuracy and portability, making it an essential tool for professionals seeking reliable, repeatable measurements. ## Description La solución tampón/de calibración HM Digital TDS 342 ppm (90 ml) se presenta en botellas de plástico ligeras y puede recalibrarse periódicamente. Review: Small Bottle, Use Again - I calibrated my TDS meter just fine. I used a better air tight jar and poured it all into it, that way I can use it multiple times. I will buy again. Delivery good. Review: Very useful - Very useful for a window cleaner ## Features - The C-342 is NaCl solution (342 PPM) - This HM Digital TDS Calibration Solution is also known as Water Tester Solution andTDS Meter Calibration Solution - Use the HM Digital TDS Calibration Solution (342 PPM) to periodically re-calibrate your HM Digital TDS meter or HM Digital Water Quality Tester - Sealed with a coated foam liner - Comes in lightweight HDPE plastic bottles ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001VE99X8 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 72,930 in Garden ( See Top 100 in Garden ) 197 in Pool & Hot Tub Testers | | Customer Reviews | 4.4 4.4 out of 5 stars (826) | | Date First Available | 23 May 2012 | | Global Trade Identification Number | 00891144000014 | | Item Package Quantity | 1 | | Item Weight | 100 g | | Item model number | C-342 | | Manufacturer | HM Digital | | Number of Pieces | 1 | | Part number | C342 | | Product Dimensions | 4.45 x 4.45 x 7.62 cm; 100 g | | UPC | 891144000014 | ## Product Details - **Brand:** HM Digital - **Item form:** Liquid - **Item volume:** 90 Millilitres - **Item weight:** 100 Grams - **Package information:** Bottle ## Images ![HM Digital 342ppm TDS Calibration Solution (a.k.a Water Testing Solution) 3 fl oz (90 ml) - Image 1](https://m.media-amazon.com/images/I/61U5LTc9u8L.jpg) ## Questions & Answers **Q: My two tds meters read 150ppm and 160ppm in the solution. what am i doing wrong.** A: The reason for the discrepancy is that the TDS meters are not calibrated. You need to re-calibrate them following the manufacturers instructions. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Small Bottle, Use Again *by J***O on 16 April 2025* I calibrated my TDS meter just fine. I used a better air tight jar and poured it all into it, that way I can use it multiple times. I will buy again. Delivery good. ### ⭐⭐⭐⭐⭐ Very useful *by D***S on 29 October 2019* Very useful for a window cleaner ### ⭐⭐⭐⭐ Calibration solution. *by R***N on 19 July 2024* I have had a TDS pen for several years until recently it started to play up. so a battery change and a rest was well over due. The solution was a quick and easy method and it worked well. ## 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.com.sa/products/54009866-hm-digital-342ppm-tds-calibration-solution-a-k-a-water](https://www.desertcart.com.sa/products/54009866-hm-digital-342ppm-tds-calibration-solution-a-k-a-water) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-04-22*