Standard Process Vitamins

Explain the use of preparing standard solutions and titrations and describe how this may be carried...?

....out differently in industry I nee dmore work on it, any suggestions on ifo? Thanks It is important to prepare an accurate concentration of a standard solution of sodium thiosulphate. The concentration of iodine must also be correct, so the determination of vitamin C is correct. It is useful to prepare the standard solution before you carry the titration out first, as you can get practise in for getting the results accurate and it saves time doing it before doing the titration. Titration is carried out differently in industry, in hospitals as they titrate by hand, as it may be more accurate; however there is a cause for human error. In different industries the process is usually automated thereby eliminating human error, as the answers would be digital and not guessing, however for this there could also be the risk of systematic error, but this is a lot more quicker than the titrating by hand, where the accuracy is at most importance. Automated titration is also used in industry for titrating large amount of volumes. Also, in industry, different industries may also, measure the endpoint differently, as they may use a PH indicator, a potentiometer or a PH meter. However, you can not always trust the concentration on the bottle, as the concentration should be one number, but then the concentration could be 0.1 out, and this could effect your results overall. This is why you should check the concentration of the iodine, so then the results are accurate. The winemaker industry are moving away from old manual titrations, colour indicators, time consuming aeration oxidation tests and dilution calculations to more accurate, more dependable and faster methods. It is vital that instruments deliver information quickly, inexpensively but most of all with high accuracy.

Public Comments

1. You need to know the exact concentration of all titrants therefore you need to have a method of determining what the molarity of any test solution is independently. This can be a known pure and stable "standard" from which you can prepare of solution of known molarity. (usually by weighing) If you know the molecular formula of a substance you can calculate molarity of a solution from the weight of that substance in solution. (weight of substance divided by molecular formula divided by the volume and multipied by 1000 = Molarity)
2. Suggestions: Gravimetric techniques i.e. involving weighing-out of reagents are inherently more accurate than volumetric techniques i.e. involving pouring-out of liquids. Precision is more important than accuracy. Tests are controlled and it is only when the controls work that the results are accepted as valid. It's down to correct calculations, correct weighing and careful practice so that you are confident. In industry, techniques may vary if the throughput volume is high. Protein estimation in the medical sector and the industrial sector vary. In the medical sector, a change in value over time is more important than the value itself. Suggest that you get hands-on. Then it will all fall into place for you and the theory will make sense. Take care with the weighing and record it all.