User manual HANNA INSTRUMENTS HI 3873

[. . . ] Instruction Manual SPECIFICATIONS INSTRUCTIONS - · It is better to match the color with a white sheet at about 10 cm behind the comparator. HI 3873 Nitrite Test Kit Range Smallest Increment Analysis Method Sample Size Number of Tests Case Dimensions Shipping Weight 0 to 1. 0 mg/L (ppm) as NO2 -N 0. 2 mg/L (ppm) NO2--N Colorimetric 10 mL 100 230x59x70 mm (9. 0x2. 3x2. 8") 169 g (6. 0 oz. ) READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT · Fill the glass cuvet with 10 mL of the sample, up to the mark. [. . . ] Nitrosation reactions of nitrites can yield organic nitrosamines, which are known to be carcinogenic. Note: mg/L is equivalent to ppm (parts per million). · To convert the reading to mg/L of Nitrite (NO 2-), multiply the reading by a factor of 3. 29. www. hannainst. com · Replace the cap and shake gently until the powder is dissolved. A deposit may remain but it will not affect the reading. · Wait for 6 minutes to allow the color to develop. Remove the cap and fill the color comparator cube with 5 mL of the treated sample (to the mark). REFERENCES Adaptation of the EPA approved method 354. 1. Note: Any damaged or defective item must be returned in its original packing materials. ISTR3873 12/99 Dear Customer, Thank you for choosing a Hanna Product. Please read the instructions carefully before using the chemical test kit. It will provide you with the necessary information for correct use of the kit. Remove the chemical test kit from the packing material and examine it carefully to make sure that no damage has occurred during shipping. [. . . ] The amount of color developed is proportional to the concentration of nitrite present in the aqueous sample. PRINTED IN ITALY · Determine which color matches the solution in the cube and record the result in mg/L (or ppm) of Nitritenitrogen. [. . . ]