$467.690
+ IVA
Agotado
Agotado
HI97749 is an advanced portable pHotometer for the measurement of chromium (VI) in water. This meter offers a superior optical system that utilizes a reference detector and narrow band interference filters for extremely fast and repeatable measurements.
Hexavalent chromium salts are used in various industrial applications, such as in the manufacture of paints, dyes, explosives, and ceramics, and extensively in the metal finishing and plating industries. Due to its toxicity to humans, animals, and aquatic life, hexavalent chromium is actively monitored and neutralized in wastewater from the above industries.The HI97749?uses an adaptation of the ASTM Manual of Water and Environmental Technology, D1687-92, dipHenylcarbohydrazide method to measure chromium VI concentrations up to 1000 ?g/L (ppb). When the dipHenylcarbohydrazide reagent is added to samples containing chromium VI, the sample will turn a purple hue; the greater the concentration, the deeper the color. The associated color change is then colorimetrically analyzed according to the Beer-Lambert Law. This principle states that light is absorbed by a complementary color, and the emitted radiation is dependent upon concentration. For higher levels of chromium VI, a narrow band interference filter at 525 nm allows only green light to be emitted and passed through the sample cuvette. As the change in color of the reacted sample increases, absorbance of the specific wavelength of light also increases, while transmittance decreases.
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CAL CheckAdvanced features including CAL-Check to verify performance and if necessary, recalibrate.
Multiple Chemical FormsResults can be displayed in multiple chemical forms.
Setup OptionsBacklit dot matrix LCD that offers an exceptionally intuitive user interface that is easy to read and understand.
Tutorial ModeTutorial mode for step-by-step instructions to guide a first-time user in how to perform a measurement correctly.
Reaction TimerBuilt-in reaction timer that ensures consistency amongst multiple users.
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High Efficiency Light Source:
High Quality Filters:
Greater Light Yield:
A focusing lens collects all of the light that exits the cuvette, eliminating errors from imperfections and scratches that may be present in the glass. The use of the convex lens reduces the need for indexing cuvettes.
CAL Check Functionality:
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Intuitive Dot Matrix Display:
Auto-off Protection:
Peso | 0,8394021 kg |
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Especificación | Detalle |
Código | HI97749 |
Intervalo | 0.00 a 300.0 µg/L (como Cr (VI)) |
Resolución | 1 µg/L |
Exactitud | ± 10 mg/L ±4 % de la lectura a 25 °C |
Método | Adaptación del Manual de ASTM de tecnología del agua y el medio ambiente, D1687-92, Método de difenilcarbohidrazida |
Fuente de luz | Diodo emisor de luz |
Detector de luz | Fotocelda de silicio |
Tipo de celda | Cilíndrica 24.6 mm de diámetro (22 mm por dentro) |
Ancho de banda del filtro | 8 nm |
Filtro de banda | 525 nm |
Exactitud de longitud de onda del filtro | ±1.0 nm |
Almacenamiento | 50 lecturas (almacenamiento automático) |
Tipo de batería | Alcalina 1.5 V AA (3 pzas.) |
Duración de la batería | > 800 mediciones (sin luz de fondo) |
Apagado automático | Después de 15 minutos de inactividad (30 minutos antes de una medición realizada al presionar el botón READ) |
Condiciones ambientales | 0 a 50 °C (32 a 122 °F); 0 a 100% HR |
Dimensiones | 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0") |
Peso | 380 g (13.4 oz.) |
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