--- product_id: 79775933 title: "HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature" brand: "hm digital" price: "1557.81 DT" currency: TND in_stock: true reviews_count: 7 url: https://www.desertcart.tn/products/79775933-hm-digital-orp-200-waterproof-orp-meter-measures-oxidation-reduction store_origin: TN region: Tunisia --- # Alkaline battery powered IP67 Waterproof rating Measures ORP & temperature HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature **Brand:** hm digital **Price:** 1557.81 DT **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of water quality with precision and durability in your hands! ## Quick Answers - **What is this?** HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature by hm digital - **How much does it cost?** 1557.81 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/79775933-hm-digital-orp-200-waterproof-orp-meter-measures-oxidation-reduction) ## 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 - • **Ready When You Are:** Includes alkaline batteries for immediate use—no extra purchases needed to get started. - • **Compact & Lightweight:** Weighing just 159g, it’s easy to carry and handle during field testing or lab work. - • **Precision in Every Drop:** Accurately measures Oxidation Reduction Potential and temperature for reliable water quality insights. - • **Built to Brave the Elements:** IP67 waterproof design ensures durability and performance even in wet, rugged environments. - • **Trusted Brand, Proven Results:** HM Digital’s ORP-200 is a go-to tool for professionals demanding consistent, actionable data. ## Overview The HM Digital ORP-200 is a waterproof, battery-powered meter designed to measure oxidation reduction potential and temperature with IP67 protection. Lightweight and portable, it delivers reliable water testing results for professionals in industrial, scientific, and environmental fields. ## Description Product Description Review: Cool Product - Its working!! Review: Two Stars - The calibration solution is desperately required and is not available in India. We can not trust the readings. ## Features - ORP METER - WATERPROOF ORP METER - WATER ORP METER - ORP METER WATER TESTING - WATER TESTING ORP METER ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00132GJ0E | | Are Batteries Included | Yes | | Batteries Are Included | Yes | | Battery Description | Alkaline | | Best Sellers Rank | #125,540 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #232 in Conductivity Meters & Accessories | | Brand | HM Digital | | Brand Name | HM Digital | | Colour | Green | | Customer Reviews | 3.7 out of 5 stars 75 Reviews | | Global Trade Identification Number | 00891144000045 | | International Protection Rating | IP67 | | Item Weight | 159 g | | Manufacturer | HM Digital India, Rajasthan, HM Digital India, Rajasthan | | Manufacturer Contact Information | HM Digital India, Rajasthan | | Manufacturer Part Number | ORP-200 | | Material | Plastic | | Material Type | Plastic | | Model Number | ORP-200 | | Packer Contact Information | HM Digital India, Rajasthan | | UPC | 891144000045 612953889764 735090555849 | | Unit Count | 1.00 Piece | | Water Resistance Level | Waterproof | | Whats In The Box1 - Whats In The Box3 | ORP-200 ,USER MANUAL | ## Product Details - **Brand:** HM Digital - **Are Batteries Included:** Yes - **Colour:** Green - **Item Weight:** 0.35 Pounds - **Battery Description:** Alkaline ## Images ![HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature - Image 1](https://m.media-amazon.com/images/I/51RYSfrhYrL.jpg) ![HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature - Image 2](https://m.media-amazon.com/images/I/61ZT8t-Ay5L.jpg) ![HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature - Image 3](https://m.media-amazon.com/images/I/61yS3nD5fNL.jpg) ![HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature - Image 4](https://m.media-amazon.com/images/I/71+v2GSBpCL.jpg) ![HM Digital ORP-200 Waterproof ORP Meter Measures Oxidation Reduction Potential and Temperature - Image 5](https://m.media-amazon.com/images/I/81RVmxpGvxL.jpg) ## Questions & Answers **Q: Does this meter test for ozone and PH levels?** A: Dennis,This tester tests for Temperature, ORP and PH (not Ozone). **Q: Does tester test for ozone and PH levels** A: This meter does not test for pH or Ozone. I bought a cheap pH meter off Amazon , model ATC, a yellow and black rectangular meter, about $10 with shipping, for the pH. I haven't done anything with ozone. The ORP meter tests water temperature and ORP. I didn't buy the calibration fluid which I'm going to have to buy. The first reading was -255 and the next reading a couple of days later was about -20. I don't have any way to calibrate it and the reviews say you have to calibrate regularly. Hope this helps. **Q: The specs on the orp 200 state it will test -999 to +1000 and also that it is factory calibrated to +200. what's the factory calibration of +200 for?** A: On all ORP meters I have received, over the last 10 years, when you turn it on, the meter will read between 200 and 250. This is normal. Keep the ORP probe wet. Get your self a calibration solution to check and adjust the calibration. This meter comes with a small piece of sand paper. the meter probe needs to be wet sanded once in a while. If you can smell the Ozone in the water the meter reading should be at least 700 ORP. **Q: Does the meter have an on & off switch?** A: FROM HM DIGITAL: Yes, the ORP-200 have an on/off switch and it's located on the front of the unit. In order to properly turn the unit on, you will first want to remove the cap and then press the `ON/OFF' button. The display will become active. For more information, www.tdsmeter.com/products/orp200.html ## Customer Reviews ### ⭐⭐⭐⭐ Cool Product *by R***P on 30 July 2015* Its working!! ### ⭐⭐ Two Stars *by A***A on 30 August 2015* The calibration solution is desperately required and is not available in India. We can not trust the readings. ### ⭐⭐⭐⭐⭐ Très bien *by T***F on 28 June 2018* J'ai acheté ce produit pour mon entreprise et je l'ai trouvé parfaitement adapté à mon utilisation. Les résultats sembles fiables. ## Frequently Bought Together - HM Digital ORP-200 Waterproof Professional Series Handheld, White/Green, ORP Meter - Variispeed, Fan Speed Controller, Black - Virkon Aquatic Tablets. 50 x 5 Gram. 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