Specifications Instruction Manual 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.) HI 38058 pH 4.0-10.0 Test Kit with Checker Disc Instructions READ THE ENTIRE INSTRUCTIONS BEFORE USING THE KIT Note:: Always shake the reagent bottle before use. • Using the plastic pipette, fill each glass vial with 5 mL of sample (up to the mark). • Insert one of them into the left hand opening of the checker disc. This is the blank. Note: A concentration of Chlorine above 50 ppm causes interference which inhibits the development of the color. Significance and use pH represents acidity or alkalinity of an aqueous solution and is proportional to the hydrogen-ion concentration of the solution. Under neutral conditions water is dissociated into + the OH and H ions in equal ratio and hence it has a pH of 7. When bases or acids are added to a water solution they + ionize, increasing the concentration of OH or H , respectively. 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. www.hannainst.com Note: Any damaged or defective item must be returned in its original packing materials. 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. • Add to the other glass vial 2 drops of pH Wide Range Indicator. Replace the cap and mix the solution by gently swirling. This is the reacted sample. Examples of pH value for some liquids: pH Value Liquid Sea water 7.8-8.2 Gastric juices 1.7 Milk 6.5-7 Soil 6-7 (optimum for crops) 11/08 Chemical reaction ISTR38058R4 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 email@example.com. Remove the 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 damage, notify your Dealer or the nearest Hanna office immediately. Each kit is supplied with: • pH Wide Range Indicator, 1 bottle with dropper (30 mL); • 1 checker disc (containing the 38058 disc); • 2 glass vials with caps; • 1 plastic pipette (3 mL). pH Wide Range Indicator reagent reacts in contact with the aqueous solution changing its color according to the hydrogenion concentration (pH) in the given range. • Rotate the disc while looking at the color test windows and stop when you find the color match. Read the value in the result window directly in pH units. 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 Vogel's, Quantitative Chemical Analysis, 5th Ed., Longman Scientific & Technical. • Remove the cap and insert the reacted sample into the right hand opening of the checker disc. • Hold the checker disc so that a light source illuminates the samples from the back windows. Accessories HI 38058-100 HI 740231 Replacement reagent (300 tests) 20 ml glass cylinders with caps (2 pcs) Safety Data Sheets The chemicals contained in this kit may be hazardous if improperly handled. Read the relevant Safety Data Sheet before performing this test.
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