The HANNA HI746 pocket checker meter is a digital colorimeter for testing iron. The Iron Checker Low Range (0 to 999 ppb), is supplied complete, with two cuvettes with lid, powder reagent for 25 tests, battery, instructions and a quick use guide so that with a few simple steps you can achieve an accurate measurement. Iron is one of the most abundant elements on earth. It is an essential element for humans, and is used in a variety of industrial processes. It is also found in drinking water. High levels of iron can be fatal, but the amount found in drinking water is often too low to be dangerous. Instead, high levels of iron in drinking water can cause unsanitary effects, including bad taste and discoloration. If you suspect that your water has too much iron, leave it doubtful by measuring it with this checker. Our checkers are portable so they can be easily transported anywhere you need. And, in addition, the operation of pressing a single button will make you get accurate results in a simple way. Get accurate results with our simple handheld meter. You no longer have to struggle to determine colors, our portable colorimeter eliminates the problem of matching to a color chart, providing a direct result of digital chlorine. With the HI746 checker you can easily, accurately and cost-effectively measure low range iron. In addition, the operation of pressing a single button will make you get accurate results in a simple way. Get accurate results with our simple handheld meter. You no longer have to struggle to determine colors, our portable colorimeter eliminates the problem of matching to a color chart, providing a direct result of digital chlorine. With the HI746 checker you can easily, accurately and cost-effectively measure low range iron. In addition, the operation of pressing a single button will make you get accurate results in a simple way. Get accurate results with our simple handheld meter. You no longer have to struggle to determine colors, our portable colorimeter eliminates the problem of matching to a color chart, providing a direct result of digital chlorine. With the HI746 checker you can easily, accurately and cost-effectively measure low range iron.Designed as a more accurate alternative to chemical test kits, the HI746 provides fast and accurate results in a few simple steps: Step 1: Add a sample to the cuvette (included). Step 2: Insert the sample into the checker and press the button to zero. Step 3: Remove the sample and add the reagent as directed in the manual. Step 4: Reinsert the sample and press the button for 3 seconds to measure the results. Ideal for: Water quality, Environment, Education, Pools, SPAs, hospitality, industrial and food processes. HANNA checkers are small, portable and, above all, provide higher precision results than typical chemical test kits. Offering improved technology, its simple design easily allows for hassle-free measurement. These digital photometers or test kits serve as a bridge between the very simple test kits and professional instrumentation such as a calibrable photometer. Conventional test kits are not precise and totally depends on the user who is viewing the color, which is why HANNA has digitized this measurement and has achieved an exact pocket digital colorimeter. The Checker is accurate while offering a very affordable price. The new shape of the Checker makes it fit in the palm of your hand or in your pocket. Plus, the LCD screen is easy to read, with an automatic shut-off feature in case you forget to turn it off for some reason. Easier to use and more accurate than visual test kits: • High precision • Large, easy-to-read digits • Auto power off Dedicated to a single parameter: Single button operation: zero and measure Operated by a single AAA battery General.