User manual HANNA INSTRUMENTS HI 3818

[. . . ] Instruction Manual SIGNIFICANCE AND USE Certain carbon dioxide levels are required in nature and in man's environment. Generally, lakes and rivers contain less than 10 mg/L * carbon dioxide, however stagnant or polluted water can generate large amounts due to organic or mineral decomposition. [. . . ] Rinse the plastic vessel with water sample, fill to the 5 mL mark and replace the cap. · Add 1 drop of Phenolphtalein indicator through the cap port, and mix carefully swirling the vessel in tight circles. If the solution remains colorless, then proceed to next step. · Proceed with the test as described before. To obtain the result multiply the values on the syringe scale by 50. HI 3818 Carbon Dioxide Test Kit x 50 = CO 2 Determination in the 0 to 10 mg/L Carbon Dioxide If results are lower than 10 mg/L, the precision of the test can be improved as follows. Rinse the plastic vessel with water sample, fill to the 50 mL mark and replace the cap. To obtain the result multiply the values on the syringe scale by 10. www. hannainst. com x 10 = CO 2 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 SPECIFICATIONS it carefully to make sure that no damage has occurred during shipping. If there is any noticeable damage, notify your Dealer or the nearest Hanna office immediately. Each kit is supplied with: · Phenolpthtalein Indicator, 1 bottle (10 mL) with dropper ; · HI 3818-0, 1 bottle (120 mL); · 2 calibrated vessels (10 and 50 mL); · 1 calibrated syringe. Note: Any damaged or defective item must be returned in its original packing materials. CHEMICAL REACTION Carbon dioxide (as carbonic acid) in the water sample is neutralized with a dilute sodium-hydroxide solution to a pH of 8. 3 using a phenolphthalein indicator. This process converts carbonic acid to sodium bicarbonate: CO 2 +H2O H 2CO 3+NaOH NaHCO3+H 20 SPECIFICATIONS 0 to 10 mg/L (ppm) CO2 0 to 50 mg/L (ppm) CO2 0 to 100 mg/L (ppm) CO2 Smallest Increment 0. 1 mg/L [in the 0-10 mg/L range] 0. 5 mg/L [in the 0-50 mg/L range] 1 mg/L [in the 0-100 mg/L range] Analysis Method Base titration using phenolphthalein indicator Sample Size 5 mL, 10 mL and 50 mL Number of Tests 110 (average) Case Dimensions 200x120x60 mm (7. 9x4. 7x2. 4") Shipping Weight 460 g (1 lb. ) Range · Take the titration syringe and push plunger completely into the syringe. [. . . ] Read Health and Safety Data Sheets before performing the test. PRINTED IN ITALY x 100 = CO 2 Determination in the 0 to 50 mg/L Carbon Dioxide If results are lower than 50 mg/L, the precision of the test can be improved as follows. Rinse the plastic vessel with water sample, fill to the 10 mL mark and replace the cap. ISTR3818R3 07/01 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 0987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 5 mL sample 10 mL sample HI 3818 CARBON DIOXIDE TEST KIT 1 50 mL sample 2 4 3 [. . . ]