User manual HANNA INSTRUMENTS HI 83099

[. . . ] Instruction Manual HI 83099 COD and Multiparameter Bench Photometer www. hannainst. com 1 Dear Customer, Thank you for choosing a Hanna product. Please read this instruction manual carefully before using the instrument. This manual will provide you with the necessary information for the correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. TABLE OF CONTENTS PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] · Press the Chem Frm key to convert the result in mg/L of Calcium (Ca2+). 57 Hardness Ca · Press the Unit key to change the current measurement unit. The results can be converted to French degrees (°f), German degrees (°dH) and English degrees (°E). · Press or to return to the measurement screen. Note: This test will detect any calcium contamination in the beaker, measuring syringes or sample cells. To test cleanliness, repeat the test multiple times until you obtain consistent results. Note: For better accuracy wash glassware with HCl 6N. SAMPLE DILUTION This meter is designed to determine low levels of hardness, typically found in water purification systems. When testing some other sources of water, it is not uncommon to come across levels of hardness that are greater than the range of this meter. Dilutions must be performed with hardness-free water or the readings will be erroneous. A dilution to reduce the level of hardness by a factor of one hundred is performed as follows: · Fill a 1 mL syringe with the sample. · Place the syringe in a 50 mL beaker, making sure that the beaker is clean and empty, and inject 0. 5 mL into the beaker. · Fill the beaker up to the 50 mL mark with hardness-free water. INTERFERENCES Interference may be caused by excessive amounts of heavy metals. Hardness Ca 58 MAGNESIUM HARDNESS SPECIFICATIONS Range Resolution Accuracy Typical EMC Deviation Light Source Method 0. 00 to 2. 00 mg/L 0. 01 mg/L ±0. 11 mg/L ±5% of reading at 25 °C ±0. 02 mg/L Tungsten lamp with narrow band interference filter @ 525 nm Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, EDTA colorimetric method. The reaction between magnesium and reagents causes a reddish-violet tint in the sample. Description Mg indicator Alkali solution EDTA solution EGTA solution Quantity 0. 5 mL 0. 5 mL 1 drop 1 drop REQUIRED REAGENTS Code HI 93719A-0 HI 93719B-0 HI 93719C-0 HI 93719D-0 REAGENT SETS HI 93719-01 Reagents for 100 tests HI 93719-03 Reagents for 300 tests For other accessories see page 132. MEASUREMENT PROCEDURE · Select the Magnesium Hardness method using the procedure described in the Method Selection section (see page 12). · Rinse a graduated beaker several times with unreacted sample, before filling it to the 50 mL mark with the sample. · Add 0. 5 mL of HI 93719A-0 Magnesium indicator solution, then swirl to mix. · Add 0. 5 mL of HI 93719B-0 Alkali solution and swirl to mix. Use this solution to rinse 2 cuvettes. 59 Hardness Mg · Fill both cuvettes up to the 10 mL mark. 10 mL #1 10 mL #2 · Add 1 drop of HI 93719C-0 EDTA solution to one cuvette (# 1), replace the cap and invert the cuvette several times to mix. This is the blank. #1 · Add 1 drop of HI 93719D-0 EGTA solution to the second cuvette (# 2), replace the cap and invert the cuvette several times to mix. This is the sample. #2 · Place the blank (# 1) into the holder and close the lid. #1 · Press the Zero key. The meter will show "-0. 0-" when the meter is zeroed and ready for measurement. #2 · Remove the blank (# 1), insert the sample (# 2) into the instrument, and close the lid. The instrument displays concentration in mg/L of magnesium hardness, as CaCO3. Hardness Mg 60 · Press or to access the second level functions. · Press the Chem Frm key to convert the result in mg/L of Magnesium (Mg2+). · Press the Unit key to change the current measurement unit. The results can be converted to French degrees (°f), German degrees (°dH) and English degrees (°E). · Press or to return to the measurement screen. Note: This test will detect any magnesium contamination in the beakers, measuring syringes or sample cells. To test cleanliness, repeat the test multiple times until you obtain consistent results. SAMPLE DILUTION This meter is designed to determine hardness typically found in water purification systems. [. . . ] Description Zinc Reagent Cyclohexanone Quantity 1 packet 0. 5 mL REQUIRED REAGENT Code HI 93731A-0 HI 93731B-0 REAGENT SETS HI 93731-01 Reagents for 100 tests HI 93731-03 Reagents for 300 tests For other accessories see page 132. MEASUREMENT PROCEDURE · Select the Zinc method using the procedure described in the Method Selection section (see page 12). · Fill one graduated mixing cylinder up to the 20 mL mark with the sample. 20 mL · Add the content of one packet of HI 93731A-0 Zinc reagent, close the cylinder and invert several times to mix until completely dissolved. · Fill one cuvette with 10 mL of the reacted sample up to the mark. 10 mL 127 Zinc · Place the cap and insert the cuvette into the instrument and close the lid. The display will show "-0. 0-" when the meter is zeroed and ready for measurement. · Remove the cuvette and add 0. 5 mL of HI 93731B-0 Cyclohexanone to the cuvette. Note: To prevent any contamination from the polycarbonate cap, prior to replacing it, close the sample cuvette with the supplied HDPE plastic stopper. [. . . ]