User manual HANNA INSTRUMENTS HI 38058

[. . . ] Instruction Manual SPECIFICATIONS Range 4. 0 to 10. 0 as pH unit Smallest Increment 0. 5 as pH unit Analysis Method Colorimetric Sample Size 5 mL Number of Tests 300 Case Dimensions 165x150x38 mm (6. 5x5. 9x1. 5") Shipping Weight 215 g (7. 6 oz. ) INSTRUCTIONS READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT Note: Always shake the reagent bottle be: fore use. · Using the plastic pipette, fill each glass vial with 5 mL of sample (up to the mark). [. . . ] Thus solutions with a pH of 1-3 contain strong acids, whereas those with a pH of 4-6 contain weak acids. Weak bases result in solutions of pH 8-10 and strong bases in pH of 11-13. Examples of pH value for some liquids: Liquid pH Value Sea water 7. 8-8. 2 Gastric juices 1. 7 Milk 6. 5-7 Soil 6-7 (optimum for crops) PRINTED IN ITALY Note: A concentration of Chlorine above 50 ppm causes interference inhibiting the development of the color. For best results: Intensely colored samples will make the color matching determination difficult and they should be adequately treated before performing the test. Suspended matter in large amounts should be removed by prior filtration. When not in use, keep the disc protected from light, in a cool and dry place. www. hannainst. com Note: Any damaged or defective item must be returned in its original packing materials. ISTR38058 02/00 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 test kit from the packing material and examine it carefully to make sure that no damage has occurred during shipping. [. . . ] The chemicals contained in this kit may be hazardous if improperly handled. Read the relevant Health and Safety Data Sheet before performing this test. CHEMICAL REACTION HI 38058-0 reagent reacts in contact with the aqueous solution changing its color according to the hydrogen-ion concentration (pH) in the given range. [. . . ]