Hanna Instruments HI 83215 Instruction Manual

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25 Ammonia MRSPECIFICATIONSRange 0.0 to 50.0 mg/LResolution 0.5 mg/LAccuracy ±0.5 mg/L ±4% of reading at 25 °CTypical EMC ±0.5 mg/LDeviationLight Source Tungsten lamp with narrow band interference filter @ 420 nmMethod Adaptation of theASTM Manual of Water and Environmental Technology, D1426-92,Nessler method. The reaction between ammonia and reagents causes a yellow tint inthe sample.REQUIRED REAGENTSCode Description QuantityHI 93715A-0 First Reagent 4 drops (6 drops for seawater)HI 93715B-0 Second Reagent 4 drops (10 drops for seawater)REAGENT SETSHI 93715-01 Reagents for 100 testsHI 93715-03 Reagents for 300 testsFor other accessories see page 50.MEASUREMENT PROCEDUREATTENTION:Note: for sample preparation follow the NUTRIENTS SOLUTION (MR) procedure at page 20.• Select theAmmonia MR method using the proceduredescribed in theMethod Selection section (see page 12).• Fill the cuvette with 10 mL of unreacted sample (up to themark) and replace the cap.• Place the cuvette into the holder and close the lid.• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready formeasurement.AMMONIA MEDIUM RANGE10 mL