{"product_id":"turbidity-epa-portable-meter-hi98703-02","title":"Turbidity (EPA) Portable Meter - HI98703-02","description":"\u003cdiv style=\"margin: 0 0 48px;\"\u003e\n\u003cp\u003eThe HI98703 Precision Turbidity Portable Meter is specially designed for water quality measurements, providing reliable and accurate readings, especially in the low turbidity range. The instrument is based on a state-of-the-art optical system which guarantees accurate results, assures long term stability, and minimizes stray light and color interferences. Periodic calibration with the supplied standards compensates for any variations in intensity of the tungsten lamp.  The 25 mm round cuvettes composed of special optical glass guarantee the repeatability of turbidity measurements.\u003c\/p\u003e\n\u003ch2\u003eFeatures at-a-glance\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eMultiple reading modes\u003c\/strong\u003e - Normal measurement, continuous measurement, or signal averaging measurement are reading modes available.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEPA CompliantMeasurement\u003c\/strong\u003e - The HI98703 meets and exceeds the requirements of EPA and Standard Methods for turbidity measurements. When the meter is in EPA mode all turbidity readings are rounded accordingly to meet reporting requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e – A two, three, or four-point turbidity calibration can be performed by using the supplied (\u0026lt;0.10, 15.0, 100, and 750 NTU) standards. Calibration points can be modified if user-prepared standards are used.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAMCO AEPA-1 Primary Turbidity Standard\u003c\/strong\u003e - The AMCO AEPA-1 supplied standards are recognized as a primary standard by the USEPA. These non-toxic standards are made of styrene divinylbenzene polymer spheres that are uniform in size and density. The standards are reusable and stable with a long shelf life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFast Tracker\u003csup\u003e™\u003c\/sup\u003e\u003c\/strong\u003e - For advanced ˜field applications, the HI98703 is equipped with Fast Tracker\u003csup\u003e™\u003c\/sup\u003e - Tag Identi˜fication System (T.I.S.) that makes data collecting and management simpler than ever. Fast Tracker\u003csup\u003e™\u003c\/sup\u003e allows users to record the time and location of a speci˜fic measurement or series of measurements using iButton\u003csup\u003e®\u003c\/sup\u003e tags near sampling points for quick and easy readings. Each iButton\u003csup\u003e®\u003c\/sup\u003e tag contains a computer chip with a unique identi˜cation code encased in stainless steel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGLP Data\u003c\/strong\u003e – The HI98703 features complete GLP (Good Laboratory Practice) functions that allow traceability of the calibration conditions. Data includes calibration points, date, and time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eData Logging\u003c\/strong\u003e – Up to 200 measurements can be stored in the internal memory and recalled at any time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eData Transfer\u003c\/strong\u003e – For further storage or analysis options, logged data can be downloaded to a Windows compatible PC using the RS232 or USB port and the HI92000 software.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBacklit Display \u003c\/strong\u003e– A backlit LCD display provides an easy to understand, user-friendly interface. Displayed codes guide the user step-by-step through routine operation and calibration.\u003c\/p\u003e\n\u003ch5\u003eSignificance of Use\u003c\/h5\u003e\n\u003cp\u003eTurbidity is one of the most important parameters used to determine the quality of drinking water. Once considered as a mostly aesthetic characteristic of drinking water, signi˜ficant evidence exists that controlling turbidity is a competent safeguard against pathogens. In natural water, turbidity measurements are taken to gauge general water quality and its compatibility in applications involving aquatic organisms. The monitoring and treatment or wastewater was once solely based on the control of turbidity. Currently, the measurement of turbidity at the end of the wastewater treatment process is necessary to verify that the values are within regulatory standards.\u003c\/p\u003e\n\u003cp\u003eTurbidity of water is an optical property that causes light to be scattered and absorbed, rather than transmitted. The scattering of light that passes through a liquid is primarily caused by the suspended solids present. The higher the turbidity, the greater the amount of scattered light. Even a very pure liquid will scatter light to a certain degree, as no solution will have zero turbidity.\u003c\/p\u003e\n\u003cp\u003eDrinking water treatment plants that obtain water from surface water are required by the EPA to monitor and report the turbidity. Surface water sources include lakes and rivers.  The requirements of the nephelometer and reporting measurements according to  EPA Method 180.1 are:t\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe applicable range is 0-40 nephelometric turbidity units (NTU)\u003c\/li\u003e\n\u003cli\u003eLight source:  Tungsten lamp operated at a color temperature between 2200-3000°K.\u003c\/li\u003e\n\u003cli\u003eDistance traversed by incident light and scattered light within the sample tube: Total not to exceed 10 cm.\u003c\/li\u003e\n\u003cli\u003eDetector: Centered at 90° to the incident light path and not to exceed ±30° from 90°. The detector, and filter system if used, shall have a spectral peak response between 400 nm and 600 nm\u003c\/li\u003e\n\u003cli\u003eThe sensitivity of the instrument should permit detection of a turbidity difference of 0.02 NTU or less in waters having turbidities less than 1 unit.\u003c\/li\u003e\n\u003cli\u003eReport results as follows:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 0 0 32px;\"\u003e\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNTU reading\u003c\/td\u003e\n\u003ctd\u003eRounded to nearest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.0 - 1.0\u003c\/td\u003e\n\u003ctd\u003e0.05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1 - 10\u003c\/td\u003e\n\u003ctd\u003e0.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 - 40\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 - 100\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 - 400\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e400 - 1000\u003c\/td\u003e\n\u003ctd\u003e50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u0026gt;1000\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eThe HI98703 meets and exceeds the meter criteria specified by the EPA Method 180.1 and Standard Methods for the Examination of Water and Wastewater 2130 B.\u003c\/p\u003e\n\u003ch5\u003ePrinciple of Operation\u003c\/h5\u003e\n\u003cp\u003eThe light beam that passes through the sample is scattered in all directions. The intensity and pattern of the scattered light is affected by many variables, such as wavelength of the incident light, particle size and shape, refractive index, and color. The optical system of the HI98703 includes a tungsten filament lamp, a scattered light detector (90°) and a transmitted light detector (180°).\u003c\/p\u003e\n\u003cp\u003eIn the ratio turbidimeter range, the microprocessor of the instrument calculates the NTU value from the signals that reach the two detectors by using an effective algorithm that corrects and compensates for interferences of color. The optical system and measuring technique also compensate for fluctuations in lamp intensity, minimizing the need for frequent calibration.\u003c\/p\u003e\n\u003cp\u003eIn the non-ratio turbidimeter range, the NTU value is calculated from the signal on the scattered light detector (90°). This method offers a high linearity on the low range but is more sensitive to lamp intensity fluctuations. The lower detection limit of a turbidimeter is determined by stray light that is detected by the sensors but not caused by light scattering from suspended particles. The optical system of the HI98703 is designed to have very low stray light, providing highly accurate results for low turbidity samples.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center; margin: 0 0 48px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1086\/9535\/5761\/files\/1-Hanna-Turbidity-Meter-HI98703-300x180.png\" alt=\"Hanna Instruments HI98703 Turbidity Meter\" width=\"330\" height=\"198\" loading=\"lazy\" style=\"display: block; max-width: min(100%, 640px); height: auto; margin: 0 auto;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 24px 48px; margin: 0 0 48px;\"\u003e\n\u003cdiv style=\"flex: 1 1 260px; max-width: 440px; text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1086\/9535\/5761\/files\/Hanna-Turbidity-Meter-HI98703-Reagents-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" loading=\"lazy\" style=\"display: block; max-width: 100%; height: auto; margin: 0 auto;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1 1 340px; min-width: 0;\"\u003e\n\u003cp\u003eThe HI98703-11 AMCO AEPA-1 standards ensure that measurements are traceable to a primary reference materials. These standards are used for calibration and performance verification of the turbidity meter.\u003c\/p\u003e\n\u003ch5\u003eSupplied with Certificate of Analysis\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eLot number\u003c\/li\u003e\n\u003cli\u003eExpiration date\u003c\/li\u003e\n\u003cli\u003eStandard value @ 25 \u003csup\u003e°\u003c\/sup\u003eC\u003c\/li\u003e\n\u003cli\u003eReference meter NIST traceable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eProvided storage containers\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eLight tight\u003c\/li\u003e\n\u003cli\u003eProtects from accidental breakage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eHI98703-02\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eName\u003c\/td\u003e\n\u003ctd\u003eEPA turbidity meter with Fast Tracker™ technology; Range 0.00 to 9.99; 10.0 to 99.9 and 100 to 1000 NTU; 230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Range\u003c\/td\u003e\n\u003ctd\u003e0.00 to 9.99; 10.0 to 99.9; 100 to 1000 NTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Resolution\u003c\/td\u003e\n\u003ctd\u003e0.01; 0.1; 1 NTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e±2% of reading plus 0.02 NTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Repeatability\u003c\/td\u003e\n\u003ctd\u003e±1% of reading or 0.02 NTU, whichever is greater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Stray Light\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;0.02 NTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Light Source\u003c\/td\u003e\n\u003ctd\u003eTungsten filament lamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Lamp Life\u003c\/td\u003e\n\u003ctd\u003eGreater than 100,000 readings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Light Detector\u003c\/td\u003e\n\u003ctd\u003eSilicon Photocell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Method\u003c\/td\u003e\n\u003ctd\u003eRatio Nephelometric signal (90’) scatter light ratio transmitted light.\nAdaptation of the USEPA Method 180.1 and Standard Method 2130 B.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Display\u003c\/td\u003e\n\u003ctd\u003e60 x 40 mm LCD with backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Standards\u003c\/td\u003e\n\u003ctd\u003e15, 100 and 750 NTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbidity Calibration\u003c\/td\u003e\n\u003ctd\u003eOne, two or three point calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLog Memory\u003c\/td\u003e\n\u003ctd\u003e200 records\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Interface\u003c\/td\u003e\n\u003ctd\u003eRS232 or USB 1.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironment\u003c\/td\u003e\n\u003ctd\u003eRS0 to 50 °C (32 to 122 °F); max 95% RH non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003e4 x 1.5V AA alkaline batteries or AC adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuto Shut-off\u003c\/td\u003e\n\u003ctd\u003eAfter 15 minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e224 x 87 x 77 mm (8.8 x 3.4 x 3.0”)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e512 g (18 oz.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\u003cp\u003eEach HI98703 Portable Turbidimeter is supplied complete with:\u003cbr\u003e\n• Five Sample Cuvettes and Caps\u003cbr\u003e\n• Calibration Cuvettes (HI98703-11)\u003cbr\u003e\n• Silicone Oil (HI93703-58)\u003cbr\u003e\n• Tissue for wiping the cuvettes\u003cbr\u003e\n• Five Tag holders with Tags (HI920005)\u003cbr\u003e\n• Batteries (4 pcs.)\u003cbr\u003e\n• AC Adapter\u003cbr\u003e\n• Instruction Manual\u003cbr\u003e\n• Instrument Quality Certificate\u003cbr\u003e\n• Rigid carrying case\u003c\/p\u003e\u003ch3\u003eManuals\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/manuals.hannainst.com\/HI98703\" target=\"_blank\" rel=\"noopener\"\u003eEPA turbidity meter with Fast Tracker™ technology - HI98703\u003c\/a\u003e\u003c\/p\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":67871457804657,"sku":"HI98703-02","price":176189.85,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1086\/9535\/5761\/files\/Hanna-Instruments-Turbidity-Meter-HI98703_1.jpg?v=1792646947","url":"https:\/\/hannainst.in\/products\/turbidity-epa-portable-meter-hi98703-02","provider":"hanna","version":"1.0","type":"link"}