"Everything matched in this case. I produced a certificate. I recorded signed and dated it. [The certificate] shows the reading."
"In cross-examination the defence asked the scientist questions about preservatives. She answered that before doing the test she had to check there was a preservative present in the blood. If there had been no preservative she would not have done her test and would have notified the police. She looked at the case file and noticed that her assistant had done the test and preservative was present. She then went on to analyse the alcohol in the blood."
"There was a check for preservatives - 1.37 % fluoride preservative. This was checked by an assistant. I have paperwork about the checks. Without preservative sample would be unreliable. I check assistants' work. They act under my supervision. I have not checked that sample since for preservative. The analyst does not legally need to carry out everything."
"Nothing wrong with the sample. I have a copy of the fluoride analysis and am completely happy properly preserved."
" Did the Court err in law in admitting the hearsay evidence of CE Holland the forensic scientist that the sample which she analysed contained a preservative which made the sample reliable?"
"Yes, there was a check for preservatives."
"if a smaller amount of blood is placed in the vial then there can be too much preservative for equilibrium to occur when it is heated if the space head space is analysed by gas chromatography the extra fluoride will cause the analytical result to show an alcohol level which is in fact too much, that is higher than what is actually in the blood sample."
"In my view, to the extent that the Crown Court appear to have regarded his evidence as merely theoretical, it fell into error. Professor Forrester's evidence that the prosecution analysis of the appellant's blood sample was not reliable or accurate was based to a significant extent upon the following uncontroversial facts: (1) that the capacity of the sample vials was 6 millimetres; (2) that fluoride was present in the vials as a preservative; (3) that an approximate amount of 2 millimetres of blood had been placed in each sample vial; and (4) that the method of analysis which would have been used to measure the alcohol content of the blood sample was headspace gas chromatography."
"It was in respect of the foregoing, uncontroversial facts, all of which had been given in evidence, that Professor Forrester gave unchallenged evidence as to his scientific opinion, namely that, given the amount of blood and fluoride in the sample vial, the headspace gas chromatography method of analysis would give a reading which was about 8 per cent too high."
"It is open to a defendant when charged with excess alcohol, to call evidence to show that the analysis carried out on behalf of the prosecution was not done properly and that the results therefore cannot be relied on."
"In this case our rules are clear, you did not follow them, no order as to costs"