Alkaline cleaners are powerful tools in aqueous parts - cleaning processes. Alkaline cleaners, with the proper mechanical action, are very effective at removing contamination from parts, If they are must monitored, then higher level of alkalinity in fluids can damage or discolor certain material, such as aluminum which turns dark when the concentration ratio is too strong.
In order to assure the proper level exists, a consistent procedure must be followed to assure the washing process remains is repeatable If the same procedure is not followed, then the washing process is not consistently repeatable and part rejection becomes a real possibility.
If a chart is not readily available, there is a procedure for creating one.
How to Create a Titration Chart
This gives the tester a 10% concentration of compound.
Add a 10 - cc syringe, take exactly 10 cc of the solution. To transfer this 10 cc of sample solution to the 125 - ml graduated glass flask. Add de - ionized water to the 50 ml mark, and swirl to mix.
The solution must turn orange. If an orange color does not appear, then there is no significant amount of cleaner.
Fall one of the 5-cc disposable syringes, to 5 cc with 0.1 N Hydrochloric Acid (HCI). Slowly add the HCI to the glass flask in small increments (between 0.2 and 1.0 cc). Swirl to mix after each increment. Continue adding until the pH reaches an endpoint of 4.0 and a red-pink color expressed.
This gives a titration chart to the next step, where the alkalinity of the solution will be tested.
Hurriclean Alkalinity Titration Kit
To safely follow These directions and use the Alkalinity Titration Kit, the tester will require a pair of rubber gloves and safety goggles.
Then using the 10cc-graduated syringe to transfer exactly 10cc of cleaning solution into the same 125mL graduated glass flask.
Add 5 drops of methyl orange indicator to the flask and continue to mix. The indicator will tell if there is sufficient cleaner present in If it turns orange, proceed on. If it does not exist, then there is not a significant amount of cleaner present. Now, fill one of the 5-cc disposable syringes with 0.1 N Hydrochloric Acid (HCI).
Slowly add HCI to the solution in the tentative increment of the tolerance to the solution. Depending on what type of cleaning product is being used, there may be a need to refill the syringe with HCI during this process.
Once the pH endpoint has been reached and the red-pink color appear, record the total volume of HCI (1 cc = 1 ml) used to produce red-pink color. Now it is time to refer to the Alkalinity Calibration Curve for the product being used . Use the calibration curve (horizontal axis) by ploting total volume of HCI used (vertical axis) on the calibration curve. Add more cleaning product to reach the desired level on concentration, if necessary.
The testing is now finished. Dispose of the equipment in the proper manner and rinse the flask.
That will enable consistent cleaning to take place and diminish the potential danger of part rejection.
