HANNA instruments HI 38051 Manual
Contents
1. Instruction Manual HI 38051 Nitrite Test Kit with Checker Disc E HANNA instruments www hannainst com Dear Customer Thank you for choosing a Hanna Product Please read the instruction sheet carefully before using the test kit It will provide you with the necessary information for correct use of the kit If you need additional information do not hesitate to e mail us at tech hannainst com Remove the chemical test kit from the packing material and examine it carefully to make sure that no damage has occurred during shipping If there is any noticeable dam age notify your Dealer or the nearest Hanna office immediately Each kit is supplied with e HI 93707 0 Reagent packets 100 pcs 1 checker disc containing the 38051 disc 2 glass vials with caps 1 plastic pipette 3 ml Note Any damaged or defective item must be returned in its original packing materials 01 05 ISTR3805 1R2 SPECIFICATIONS Range 0 to 0 5 mg L ppm as NO N Smallest Increment 0 01 mg L ppm NO N Analysis Method Colorimetric Sample Size 10 mL Number of Tests 100 Case Dimensions 235x175x115 mm 9 2x6 9x4 5 Shipping Weight 446 g 15 7 oz SIGNIFICANCE AND USE Nitrites are intermediate oxidation state of nitrogen in the oxidation of ammonia to nitrate or in the reduction of nitrate Such oxidation reduction may occur in wastewater of treatment plants and in natural waters during the biological decompo2. hile looking at the color test windows and stop when you find the color match Read the value in the result window directly in mg L or ppm of Nitrite nitrogen NO N Note Do not wait more than 6 minutes to perform the reading e To convert the reading to mg L of Nitrite NO multiply the reading by a factor of 3 29 e To convert the reading to mg L of Sodium nitrite NaNO multiply the reading by a factor of 4 93 For best results Perform the reading three times and take the average value divide by 3 the sum of the three numbers Intensely colored samples will make the color matching difficult and they should be adequately treated before performing the test Sus pended matter in large amounts should be removed by prior filtration Caution Ultraviolet radiation may cause fading of colors When not in use keep the disc protected from light in a cool and dry place REFERENCES Adaptation of the EPA approved method 354 1 HEALTH AND SAFETY The chemicals contained in this kit may be hazardous if improperly handled Read the relevant Health and Safety Data Sheet before performing this test
3. sition of nitrogen compounds In small quantities nitrites can cause methaemoglobinemia among infants Conversely high levels are required to inhibit corrosion in cooling towers Nitrosation reactions of nitrites can yield organic nitrosamines which are known to be carcinogenic Note mg L is equivalent to ppm parts per million CHEMICAL REACTION Nitrites react with chromotropic acid reagent to form a pink tint in the sample The amount of color developed is proportional to the concentration of nitrite present in the aqueous sample INSTRUCTIONS READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT e Use the pipette to fill each glass vial with 10 mL of sample up to the mark e Insert one of them into the left hand 40 mL opening of the checker disc This is the blank blank sample pucks Pine A a disc color test ey windows O N result window e Add to the other vial 1 packet of HI 93707 0 reagent Replace the cap and mix to dissolve e Wait for 4 minutes to allow color to develop This is the reacted sample e Remove the cap and insert the reacted sample into the right hand opening of the checker disc e Hold the checker disc so that a light source illumi nates the samples from the back of the windows Keep the checker disc at a distance of 30 40 cm 12 16 to match the color while having a background uniform and light in color e g a white sheet Rotate the disc w
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