--- product_id: 272808257 title: "HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue" brand: "hm digital" price: "Rp697895" currency: IDR in_stock: true reviews_count: 6 category: "Hm Digital" url: https://www.desertcart.id/products/272808257-hm-digital-c342-tds-and-ec-calibration-solution-342-ppm store_origin: ID region: Indonesia --- # airtight coated foam liner seal 90 ml lightweight HDPE bottle 342 ppm NaCl precision HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue **Brand:** hm digital **Price:** Rp697895 **Availability:** ✅ In Stock ## Summary > 🔬 Calibrate with Confidence — Because Accuracy is Non-Negotiable ## Quick Answers - **What is this?** HM Digital C342 TDS and EC Calibration Solution, 342 ppm (NaCl), 90 ml Volume, Transparent/Blue by hm digital - **How much does it cost?** Rp697895 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.id](https://www.desertcart.id/products/272808257-hm-digital-c342-tds-and-ec-calibration-solution-342-ppm) ## 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 - • **Durable Airtight Seal:** Coated foam liner keeps solution fresh and contamination-free - • **Long-Lasting & Reusable:** Perfect for multiple calibrations when stored properly - • **Trusted by Professionals:** Used by water quality experts to maintain reliable readings - • **Compact & Portable Design:** 90 ml bottle fits effortlessly in your toolkit or lab space - • **Precision-Calibrated for Accuracy:** Ensure your TDS meter reads true with 342 ppm NaCl standard ## Overview The HM Digital C342 Calibration Solution offers a precise 342 ppm NaCl concentration in a convenient 90 ml HDPE bottle, sealed with a coated foam liner to maintain solution integrity. Designed specifically for recalibrating HM Digital TDS meters and water quality testers, it ensures consistent, reliable readings for professionals and enthusiasts alike. ## Description TDS Meter NaCl Calibration Solution C-342. Review: Useful for calibration - Used this to check whether all my TDS pens are accurate or not Review: 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. ## 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 | | ASIN | B001VE99X8 | | Batteries Included? | No | | Batteries Required? | No | | Color | Transparent/Blue | | Customer Reviews | 4.4 4.4 out of 5 stars (814) | | Customer reviews | 4.4 4.4 out of 5 stars (814) | | Date First Available | 7 August 2012 | | Date First Available | 7 August 2012 | | Global Trade Identification Number | 00891144000014 | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 100 g | | Item model number | C-342 | | Item model number | C-342 | | Manufacturer | HM Digital, Inc. | | Manufacturer | HM Digital, Inc. | | Number Of Pieces | 1 | | Part number | C342 | | Product Dimensions | 4.45 x 4.45 x 7.62 cm; 100 g | | Product Dimensions | 4.45 x 4.45 x 7.62 cm; 100 g | | Size | 342ppm, 90 ml Capacity | | UPC | 891144000014 | ## Product Details - **Brand:** HM Digital - **Item form:** Liquid - **Item volume:** 90 Milliliters - **Item weight:** 100 Grams - **Package information:** Bottle ## Images ![HM Digital 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) ## 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. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Useful for calibration *by A***I on 7 August 2020* Used this to check whether all my TDS pens are accurate or not ### ⭐⭐⭐⭐⭐ Review *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. ### ⭐⭐⭐⭐⭐ Review *by C***Y on 7 December 2020* Great ## 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.id/products/272808257-hm-digital-c342-tds-and-ec-calibration-solution-342-ppm](https://www.desertcart.id/products/272808257-hm-digital-c342-tds-and-ec-calibration-solution-342-ppm) --- *Product available on Desertcart Indonesia* *Store origin: ID* *Last updated: 2026-04-23*