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Tested Orange
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Alkaline cleaners are powerful tools in aqueous parts-cleaning processes. These cleaners are chemical blends consisting of alkaline salts, wetting agents, and sequestrant (chelating) agents. Alkaline cleaners, with the proper mechanical action, are very effective at removing contamination from parts, however they must be monitored. If they are not monitored, then higher levels of alkalinity in fluids can damage or discolor certain material, such as aluminum which turns dark when the concentration ratio is too strong.
Each day, the operators and maintenance engineers in manufacturing plants must determine if the correct ratio of alkaline cleaning product is evident in the wash bath. In order to assure the proper level exists, a consistent procedure must be followed to assure the washing process remains repeatable. If the same procedure is not followed, then the washing process is not consistently repeatable and part rejection becomes a real possibility.
In order to properly perform such a test, the manufacturer should have a titration chart available to consult after performing the actual titration. If a chart is not readily available, there is a procedure for creating one.
How to Create a Titration Chart
Take a 10ml sample of the solution that will be tested, and then add 90ml of de-ionized water to the graduated flask with the solution. This gives the tester a 10% concentration of compound.
Using a 10-cc syringe, take exactly 10cc of the solution. Then transfer this 10cc of sample solution to the 125-ml graduated glass flask. Add de-ionized water to the 50ml mark, and swirl to mix.
Add 5 drops of methyl orange indicator to the glass flask. Swirl the flask to mix all components. The solution should turn orange. If an orange color does not appear, then there is no significant amount of cleaner.
Fill one of the 5-cc disposable syringes, to 5cc with 0.1 N Hydrochloric Acid (HCI). Slowly add the HCI to the glass flask in small increments (between 0.2 and 1.0cc). Swirl to mix after each increment. Continue adding until the pH reaches an endpoint of 4.0 and a red-pink color appears.
After determining the amount of ml of HCI it takes to turn this sample to a red-pink color, plot the points on a graph. This provides a titration chart to reference in 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.
First, use a clear plastic container to remove approximately 250mL of solution from the washer-cleaning tank. Make sure that the washer tank has been well agitated. Then use the 10cc-graduated syringe to transfer exactly 10cc of cleaning solution into the 125mL graduated glass flask.
Next, add deionized water to the solution. Pour to the 50ml mark on the flask, and then swirl to mix. Add 5 drops of methyl orange indicator to the flask and continue to mix. The indicator will tell if there is enough cleaner present in the solution for testing. If it turns orange, proceed on. If it does not, 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 increments of 0.2 to 1.0cc, as smaller increments yield better test results. Continue adding the HCI to the solution until a red-pink color appears in the flask. If the tester has access to a pH-testing device, the endpoint of the pH should be 4.0 when they stop adding HCI. 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 appears, record the total volume of HCI (1cc = 1ml) 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 to determine volume percent cleaner (horizontal axis) by plotting 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.
By following these simple steps, repeatable chemical concentration levels will exist in each washer solution tank. That will enable consistent cleaning to take place and diminish the potential danger of part rejection.
Midbrook Cleaning Systems is a minority owned provider of parts washer and parts cleaner systems, custom metal fabrications, CapSnap water bottling systems, and production cleaning services.
Orange County Unified School District Uses New Strategy to Help Obese Students
Tesoro High School Gym Teacher Helps Teens Stay Fit
John Gipe used to be overweight in high school. He heard his teachers call him heavy and he knows how obese students in the Orange County Schools feel. Gipe has been teaching physical education for over twenty years and was preparing for retirement but was concerned about the increasing number of overweight teens at Tesoro High School, part of the Orange County School District. He knows from personal experience that being overweight in your teen years can have lifelong affects on your health, such as knee and back problems as an adult.
He made a decision to try and do something to help these students. Gipe saw that the traditional focus on team sports in physical education was not keeping students fit. Gipe and a local Rancho Santa Margarita pediatrician created the Body Composition class. This class isn't just for the obese but is a response to the increasing sedentary lifestyle lead by today's teens. The class is based on and uses the same type of techniques and work as modern health clubs. This includes learning about maintaining a nutritional diet, learning proper stretching and strengthening techniques. Counselors in the high schools are taught how to quietly recommend obese students to the class. The class has proved successful and is now being implemented in six other Orange County School District high schools.
Health Spa Techniques
Gipe's Body Composition class offered in some Orange County School District high schools is often more intensive and personalized than the volleyball or badminton played in the average physical education class. The students engage in crunches, push-ups, work with medicine balls, and use equipment designed to improve balance. This is all done to pumping music and Gipe's constant encouragement. This environment makes the students an active part of the process. A lack of motivation is one of the main reasons that the traditional physical education class does not keep the students fit.
When the exercises are over, the students gather to practice yoga style breathing and cool down. The music is turned off and Gipe takes on a different role. He doesn't yell but speaks softly and tells the students about what it takes to accomplish the goals they've set to improve their health.
Why Student Health is so Important
Unhealthy students are not just hurting themselves but can have a negative affect on the schools. Students who do not eat properly are often absent more, have lower test scores and may have trouble concentrating. There are more than nine million overweight students in American schools. This has caused an increase in childhood heart disease and diabetes. Absenteeism can affect the federal and state funding that a school receives. This is not intended to be insensitive but to illustrate the pressures that can be placed on large school districts like Orange County School District. The average student absences can cost a school between $10 and $20 dollars per day, which can add up to millions per year. Additional costs can be incurred by the school because of extra staff or overtime needed to help students with weight or nutrition related sicknesses.
About the Author
Stacy Andell is a staff writer for Schools K-12, providing free, in-depth reports on all U.S. public and private K-12 schools. Stacy has a nose for research and writes stimulating news and views on school issues. For more on Orange County schools visit http://www.schoolsk-12.com/California/Orange-County/index.html
Where can I find Orange Mobile stores in Paris?
I need to buy some French Orange phones for software testing (Samsung U600, Nokia N95, SE W910i). Can someone please give me the addresses of some Orange stores in or around central Paris where I can buy these phones?
They're all over the place.
Some addresses:
7 ave Gobelins 75005
126 blvd St Germain 75006
16 place Madeleine 75008
46 Bis rue Louvre 75001
21 blvd Haussmann 75009
89 rue Turbigo 75003
24 rue Rivoli 75004
12 blvd Sébastopol 75004
109 rue Sèvres 75006
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