Forensic science postgraduate personal statement example

Personal statement example

The plate that started my final-year project was smaller than a playing card. On it were eleven pale blue spots, each from a different ballpoint pen bought from supermarkets and stationers near my university in Leeds. After developing the plate in a simple solvent mixture, four of the pens that looked identical on paper separated into clearly different bands. Two did not separate at all. That second result interested me more than the first, because it raised the question my project was really about: when a method cannot tell two samples apart, what can an examiner honestly say?

My project compared thin-layer chromatography with UV-visible spectroscopy of ink extracted from paper. I wrote short lines with each pen, cut out small punches, extracted them in methanol and ran both methods in triplicate. Spectroscopy separated some pens that chromatography could not, but extraction from paper added variation. Two punches from the same line sometimes gave absorbance curves different enough to make me doubt my own matches. I spent several weeks improving consistency, using punches of the same size, fixed extraction times and a blank from unmarked paper, before trusting any comparison. My final report concluded that the two methods worked better together than apart, and that a 'no difference observed' result was a limit of the method, not evidence that two inks came from the same pen. My supervisor said the discussion of limitations was the strongest part, and I think that reflects how I want to work.

The rest of my degree gave me a steady base for postgraduate study. I enjoyed analytical chemistry and statistics most, particularly calibration, uncertainty and the difference between precision and accuracy. Outside lectures I read the 2009 report by the US National Research Council, Strengthening Forensic Science in the United States: A Path Forward. Its criticism that several disciplines had not been tested rigorously enough made sense to me after my ink work. I had only eleven pens and still found plenty of variation I had not expected. I want to train in a setting where validation, error rates and clear reporting are treated as central to the science.

Since graduating I have worked full-time as a dispensing assistant in a community pharmacy. It is not forensic work, but it has taught me habits I value. Every prescription is checked against the label, the patient and the stock, and any discrepancy is recorded rather than smoothed over. I keep the controlled drugs register entries I am responsible for accurate and legible, knowing someone else may need to rely on them months later. I have also learned to explain things plainly to anxious people, which I expect matters when scientific findings reach people with no scientific background.

On Saturday mornings I coach juniors at a local table tennis club. Teaching a ten-year-old to read spin from the angle of a bat has made me better at breaking a skill into small observations that can be checked, and patience has turned out to be most of the job. I also help an uncle who is housebound with his post and appointments, which has taught me to keep careful notes and follow things up when nobody else will.

I am applying for postgraduate study in forensic science because I want to build laboratory skills in areas such as toxicology and trace evidence, and to understand how evidence is handled from collection to the courtroom. I would particularly like to develop my statistics so that I can express the strength of a finding properly, rather than just describing a match. I know my practical experience is limited to undergraduate laboratories, and I am looking forward to working with more sensitive instruments and real casework standards. What I can offer is careful record keeping, honest reporting of what my results do and do not show, and the persistence to repeat a measurement until I understand it.