= Roger Wood
{disambiguate=analytical chemist}
{c}
<Roger Wood (analytical chemist)> is an <analytical chemistry> researcher whose work concerns the reliability and comparability of laboratory results. The 1999 recovery-information report identifies him with the MAFF Food Science Laboratory in Norwich and lists him among its five authors.<Harmonised guidelines for the use of recovery information in analytical measurement by Michael Thompson and others>[Eurachem-hosted text, title page and affiliation 4.]{ref}
The report addresses a practical difficulty: two laboratories can obtain different answers from the same material if one applies a <recovery correction> and the other reports the recovered amount. It develops a framework for estimating, applying and reporting recovery information rather than treating a percentage as a context-free property of a method.<Harmonised guidelines for the use of recovery information in analytical measurement by Michael Thompson and others>[Introduction and Recommendations.]{ref}
<Roger Wood (analytical chemist)> also supported the launch of the RSC Analytical Methods Committee's Technical Brief series while chairing that committee. The RSC's own account credits <Michael Thompson> as the instigator and <Roger Wood (analytical chemist)> as a strong supporter; the first brief appeared in 2000.<The RSC Analytical Methods Committee Reaches a Milestone in Technical Brief Publication>[Technical Briefs section.]{ref}
An original numerical illustration shows why laboratory agreement needs interpretation. If one laboratory recovers $8\,\mathrm{mg}$ from material containing $10\,\mathrm{mg}$ and reports 8, while another applies an appropriate recovery estimate 0.8 and reports 10, their discrepancy can arise from reporting conventions without a difference in recovered amount. Conversely, laboratories sharing an unsuitable correction can agree and remain biased. <Interlaboratory comparison> and clear reporting answer complementary questions about a measurement system.
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