Low Hardness Test Kit – LH-2011

LKR  7,300.00

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SKU: LL-149 Category:
Description

Operation

  • Fill the pipette to the 10 ml mark with sample.
  • Add the water to the clean flask.
  • Add contents of one Low Hardness (I) reagent to the flask and swirl to dissolve. A blue color indicates the hardness is 0 mg/L. If a red color develops, proceed to step 4.
  • Fill the titration pipette with 1 mL of Low Hardness (II) reagent.
  • Add the reagent slowly and swirling untill untill the color changes from red to blue. If 1 mL is not enough, repeat step 4 & 5. Read off the measurement value (V, mL) from the pipette.
  • Calculate the results. Hardness = V x 20 (mg/L, as CaCO3).

 

Notes

  • Rinse flask with deionized water before the test.
  • The pH must be within the range 6-9. Adjust if necessary, with NaOH or HCl.
  • When pipetting, if there are air bubles in the pipette, pull and push the piston repeatedly with the suction port immersion in the liquid.
Additional information
Weight 0.2 kg
Measuring range

0.4 mg/L to 20 mg/L, as CaCO3

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