All work must be very accurate as the results may need to be used in prosecution, which means they will have to be strong and stand up in court again legal scrutiny. If the case did go to court the opposing company will challenge your methods, work and results therefor it is vital that the quality is extremely high. With all work carried out the reputation of the company and the Public Analyst are at stake – so it is important for all stages of the work to be completely accurate. The majority of these companies are funded by public money – this means that the public need to see that the company is producing high quality, accurate results for funding to continue – lack of funding could result in political implications. External …show more content…
Calibrated glassware and balances were used to make sure all measurements were very accurate. We shook the prepared solution to ensure that they were homogeneous. To obtain concordant results we repeated the titrations. The results that we recorded were calibrated to three decimal places to ensure accuracy. We ensured that all washing was transferred to volumetric flasks. When using the potassium manganate we took readings from the top of the meniscus because of the intense colour of the substance. We ensured the part below the tap on the burette was filled before adjusting it to zero. Throughout the titration we swirled the flask continuously to make sure the substances were evenly distributed. Once we started to get close to the endpoint we used a dropwise addition. We took a reading when the first permanent pink colour formed in the solution in the conical flask. We ensured that all glassware was washed with deionised water and that the burette and pipette respectively were rinsed with the solution they were to