--- product_id: 10382737 title: "HI701 Checker HC Handheld Colorimeter for Free Chlorine" brand: "hanna instruments" price: "101688CFA" currency: XOF in_stock: true reviews_count: 13 url: https://www.desertcart.sn/products/10382737-hi701-checker-hc-handheld-colorimeter-for-free-chlorine store_origin: SN region: Senegal --- # 0.01 PPM resolution Large LCD screen Auto shut-off battery saver HI701 Checker HC Handheld Colorimeter for Free Chlorine **Brand:** hanna instruments **Price:** 101688CFA **Availability:** ✅ In Stock ## Summary > 📊 Elevate your water testing game—accuracy and ease in one sleek device! ## Quick Answers - **What is this?** HI701 Checker HC Handheld Colorimeter for Free Chlorine by hanna instruments - **How much does it cost?** 101688CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/10382737-hi701-checker-hc-handheld-colorimeter-for-free-chlorine) ## Best For - hanna instruments enthusiasts ## Why This Product - Trusted hanna instruments brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Pocket-sized and lightweight (0.3 kg) for on-the-go professionals who demand convenience without compromise. - • **EPA-Approved Reliability:** Uses trusted DPD method ensuring compliance and confidence in every measurement. - • **Smart Battery Management:** Auto shut-off extends battery life so your device is ready when you are—no downtime, no hassle. - • **Precision at Your Fingertips:** Delivers ultra-accurate free chlorine readings with ±0.03 PPM accuracy, beating chemical kits every time. - • **Effortless One-Button Operation:** Simplify your workflow with a single-button design that gets you results fast—no training required. ## Overview The HI701 Checker HC is a handheld colorimeter designed for precise free chlorine measurement in water. Featuring EPA-approved DPD methodology, a large LCD for easy reading, and a user-friendly one-button operation, it offers lab-grade accuracy (±0.03 PPM) in a compact, portable form. Ideal for water quality professionals, environmental testing, and pool maintenance, it outperforms traditional chemical kits while saving time and cost. ## Description Product description Free Chlorine Colorimeter - Checker HC Get accurate water testing results with the HI701 Free Chlorine Colorimeter. With a digital read out, there is no more struggling to determine colors visually. This free chlorine tester's compact design fits in your pocket or stores easily in your shop. Easier to use and more accurate than chemical test kits. One-button operation makes getting your free chlorine results simple. Great for water quality, environmental testing, and pools & spas. The HI701 Checker HC (Handheld Colorimeter) is a simple, accurate and cost effective way to measure free chlorine. Free chlorine is the active form of chlorine used for disinfection of drinking water, swimming pools and spas, and vegetable rinse water. Free chlorine in water is also harmful to a reverse osmosis membrane and needs to be monitored for removal from source water prior to being used. Designed as a more accurate alternative to chemical test kits, the HI701 free chlorine meter provides quick, accurate results in a few easy steps. Features at-a-glance For use with freshwater samples Dedicated to a single parameter Small size, big convenience Ideal for: Water Quality, Environmental, Education, Pools and Spas Review: More flexible than it appears - Some instruments are purposely limited to encourage additional purchases. I believe this is one of those instruments. It appears there are several wavelengths and times for different measurements. The wavelengths are determined by the LED color while a resistor in the base of the unit apparently determines the countdown time. In summary, it means a single unit can be used to measure multiple parameters as long as the reagents and reaction times are correct. With two cuvettes, the free chlorine checker can be used for both free and total chlorine as well as other 525nm based tests. I tried this with free chlorine and total chlorine tests and think it is an excellent alternative to Taylor test kits. The Taylor kits (K2005 in particular) require matching light shades of pink to determine chlorine levels. Even holding up to light is not always conclusive and the measurement tolerance is roughly ±0.5 PPM. This meter yields an easy to read number. All the difficulties of pouring the reagent and setting the timer are eliminated if the user simply takes two samples, uses one as the control, and then manually times the wait period (1 minute for free chlorine, 2.5 minutes for total chlorine). Just before the time is completed, put in the unreacted sample, let the unit take the baseline measurement, and then insert the reacted sample and let the checker do its magic. I compared the results to the Taylor test kit and obtained relatively similar readings. The Taylor test kit I have is quite old and the reagents are well past expired (thus the reason for buying this checker). I also used this checker with the Taylor reagents and also obtained relatively similar readings. I purchased 100 test packs for both free and total chlorine so I am set for a while. Note that the Hanna reagents require pH less than 8.2. My pH was high and I did not get useable readings until I lowered the pH to below 8.0. This tester may also be used with other 525nm tests. I have a saltwater aquarium and wanted to check the phosphate/phosphorus levels. The HI 736-25 phosphorus reagents) measured 0.70 PPM. I don't have any algae problems so this seems reasonable. I recently ordered the HI 713-25 phosphate reagents and will compare the readings. I also have some HI 721-25 iron reagents but have not tested with it yet. If anything, I might recommend the Hanna Instruments HI 711 Total Chlorine checker for its 3.50 PPM range. The HI 701 is limited to 2.50 PPM. Both have 0.01 PPM resolution and ±0.03 PPM accuracy. Review: Works perfectly - Accurate and easy to use ## Features - More accurate than chemical test kits, less expensive than professional testing - Single button operation for ease of use - Uses EPA approved diethyl-p-phenylenediamine (DPD) method, for uses have these requirements - Large LCD screen for readability - Auto shut-off to extend battery life ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003IKNJMA | | Best Sellers Rank | #141,186 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #14 in Lab Colorimeters | | Brand | Hanna Instruments | | Brand Name | Hanna Instruments | | Customer Reviews | 4.4 out of 5 stars 223 Reviews | | Global Trade Identification Number | 00611517433696, 04016138661415 | | Item Weight | 0.3 Kilograms | | Manufacturer | Hanna Instruments | | Material Type | ABS Plastic | | Model Number | HI-701 | | Part Number | HI 701 | | Ph Range | 0.00-2.50 | | Recommended Uses For Product | Water Quality, Environmental Testing, Pools & Spas | | Sterility Rating | 0.00-2.50 | | UPC | 611517433696 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Hanna Instruments - **Manufacturer:** Hanna Instruments - **Ph Range:** 0.00-2.50 - **Recommended Uses For Product:** Water Quality, Environmental Testing, Pools & Spas - **Unit Count:** 1.0 Count ## Images ![HI701 Checker HC Handheld Colorimeter for Free Chlorine - Image 1](https://m.media-amazon.com/images/I/71azkGEOM4L.jpg) ## Questions & Answers **Q: Does the HI701 come with reagent?** A: Yes, but not very many pillows. The pillows are also over sized and less convenient to use then Hach. The Hach reagent works with this unit just make sure it's the 10ml pillows. **Q: How many ppm of free chlorine will this read up too** A: Range 0.00ppm - 2.50 PPM Thank you:) **Q: Do you have to calibrate it before every single use or does one calibaration lasts a while ?** A: You can buy a calibration kit for this. It's cheap. It has a clear vial and a pink vial that should read 1.00 and I check it every few months to make sure its still close. Same steps as a normal residual check The steps for every time you check the chlorine residual include a 'calibration' to the clear water before adding the packet. Step one turn it on, shows C-1 Step two fill the vial with water and put it in and press the button Step three, after it says C-2, take the vial out and add the packet. Step four put it back it after a shake and press the button. Done. **Q: The product data pdf provided in this listing states the Hanna analysis devices are manufactuered in their new state of art European plant. Correct?** A: Yes ## Customer Reviews ### ⭐⭐⭐⭐⭐ More flexible than it appears *by B***T on February 16, 2014* Some instruments are purposely limited to encourage additional purchases. I believe this is one of those instruments. It appears there are several wavelengths and times for different measurements. The wavelengths are determined by the LED color while a resistor in the base of the unit apparently determines the countdown time. In summary, it means a single unit can be used to measure multiple parameters as long as the reagents and reaction times are correct. With two cuvettes, the free chlorine checker can be used for both free and total chlorine as well as other 525nm based tests. I tried this with free chlorine and total chlorine tests and think it is an excellent alternative to Taylor test kits. The Taylor kits (K2005 in particular) require matching light shades of pink to determine chlorine levels. Even holding up to light is not always conclusive and the measurement tolerance is roughly ±0.5 PPM. This meter yields an easy to read number. All the difficulties of pouring the reagent and setting the timer are eliminated if the user simply takes two samples, uses one as the control, and then manually times the wait period (1 minute for free chlorine, 2.5 minutes for total chlorine). Just before the time is completed, put in the unreacted sample, let the unit take the baseline measurement, and then insert the reacted sample and let the checker do its magic. I compared the results to the Taylor test kit and obtained relatively similar readings. The Taylor test kit I have is quite old and the reagents are well past expired (thus the reason for buying this checker). I also used this checker with the Taylor reagents and also obtained relatively similar readings. I purchased 100 test packs for both free and total chlorine so I am set for a while. Note that the Hanna reagents require pH less than 8.2. My pH was high and I did not get useable readings until I lowered the pH to below 8.0. This tester may also be used with other 525nm tests. I have a saltwater aquarium and wanted to check the phosphate/phosphorus levels. The HI 736-25 phosphorus reagents) measured 0.70 PPM. I don't have any algae problems so this seems reasonable. I recently ordered the HI 713-25 phosphate reagents and will compare the readings. I also have some HI 721-25 iron reagents but have not tested with it yet. If anything, I might recommend the Hanna Instruments HI 711 Total Chlorine checker for its 3.50 PPM range. The HI 701 is limited to 2.50 PPM. Both have 0.01 PPM resolution and ±0.03 PPM accuracy. ### ⭐⭐⭐⭐⭐ Works perfectly *by C***N on August 25, 2025* Accurate and easy to use ### ⭐⭐⭐⭐ Limited range *by F***Y on June 7, 2025* It works well and is easy to use. Make sure you read the specifications. The range for Free Chlorine only goes up to 2.5. ## Frequently Bought Together - Hanna Instruments HI701 Checker HC Handheld Colorimeter for Free Chlorine - Hanna Intruments HI93701-01 Chlorine Reagents - Hanna Instruments HI 711 Checker HC Handheld Colorimeter, For Total Chlorine --- ## 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.sn/products/10382737-hi701-checker-hc-handheld-colorimeter-for-free-chlorine](https://www.desertcart.sn/products/10382737-hi701-checker-hc-handheld-colorimeter-for-free-chlorine) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-20*