Module 6 Analysis Of Titration

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W followed Lab safety procedure by wearing the proper “PPE”. Module 6 analysis based on the concept of the titrant (known concentration solution) will add to the known quantity of analyte (unknown concentration solution) until the reaction is complete (method 8202).
We selected a volume of (100) ml for both of the sample and the duplicate, the volume of the unknown concentration solution is decided, by going back to the Range-specific information table (page IV) and locating our sample volume (see highlighted fields), we picked the titration cartridge with a concentration of (1.600) and multiplier number (1.0), now we are ready to conduct the analysis.

- We Draw about (110) ml of the unknown solution from the churn splitter (avoid
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7.0, 10.0) after the manufacturers instruction, followed by rinsing with DI water.
- We soaked the meter into plastic sample container and we measured the pH, at the same time we took the temperature reading in (F°) and TDS reading in (PPT) of the sample and we wrote it down in Lab data sheet, followed by rinsing with DI
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- We engaged the titrator piston into the titration cartridge by releasing the plunger button and turned the delivery knob slowly until the air was expelled (air bleeding process) then followed by resetting the digital counter back to zero and we cleaned the tip by using Kim wipe.
-We placed a phenolphthalein indicator powder pillow into (125) ml Erlenmeyer flask (that already contain magnetic stir) and poured a (100) ml of the sample solution from the (250) ml plastic sample container (that already used for pH, conductivity, temperature, and TDS measurements) into Erlenmeyer flask.
- We placed back the (125) ml Erlenmeyer flask on the magnetic stirrer and we immersed the delivery tube of the titrator into Erlenmeyer flask and placed the digital titrator into the universal clamp. At this point we paid attrition that the delivery tube was in the middle point of the solution, not to close to magnetic stir or out of the solution to cut the experimental

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