Reviewer
Every calculation, citation and concentrate ratio on this site is signed off by a named chemist before it goes live. The reviewer is not a contractor of any product brand referenced on the site.
§ 1A. Hargreaves, MChem (Hons)
Senior Biomedical Scientist within an NHS Trust laboratory; ten years on the bench across clinical microbiology and chemistry. Holds an integrated Master of Chemistry from a Russell-Group institution. Out of hours, a working contract cleaner since 2015, which is where the cleaning-trade voice comes from.
Placeholder name pending public sign-off; the live byline will carry the reviewer's full registered name and HCPC registration number once Oliver has confirmed the appointment.
§ 2Review scope
- Every page footer carries the date the reviewer last verified the content.
- Standards pages (BS EN, IUPAC) are reviewed annually or at standard revision.
- Concentrate pages are reviewed quarterly against the manufacturer page and SDS.
- Methodology pages are reviewed on substantive change to a referenced standard.
§ 3Conflict of interest
- No financial relationship with any concentrate or disinfectant brand named on this site.
- No paid placement, no sponsored mention, no affiliate links on this site.
- Personal cleaning-trade work is independent and not branded.
§ 4Editorial process
Numeric outputs are checked against published worked examples (Sigma-Aldrich for C₁V₁, BS EN 1276 for chlorine ppm, NHS NIPCM for hypochlorite dilutions). Concentrate ratios are taken from the live manufacturer page and SDS only; trade-association secondary sources are not accepted as primary.