John Watson Bsc.PgCertHealSci

Occupational Hygienist
Chemsearch Ltd
Otago Region


Before going into consulting I worked across a number of organizations including Department of Health, Otago University, Pharmaceutical industry, ICI chemicals. This has given me a broad base of experience from which to draw on when applying my skills to a client’s industry.

In particular I have spent many years in the mining industry (underground) and in hospital and university laboratories. With a strong background in chemistry, I particularly enjoy in-depth investigations into complex mixtures of workplace chemicals and determining the risks that they may pose to staff.

I enjoy working with a client’s staff and using their knowledge of the workplace to produce a healthier environment for all.

My day to day experience currently includes workplace exposure assessments for inhalable and respirable particulates (wood dust, silica, diesel particulate) welding (welding fume, welding gases), solvents/organics hydrocarbons, formaldehyde etc, gases (carbon monoxide, nitrogen dioxide, hydrogen sulphide), acids (sulphuric, nitric, hydrochloric etc.), metals (aluminium, chromium, lead, arsenic, cadmium, mercury, zinc, nickel etc.), heat stress, mould & bacteria.

I also have a strong systems knowledge and can provide qualitative and quantitative risk assessments that will help clients meet their regulatory requirements.

HASANZ Registered
  • New Zealand Occupational Hygiene Society
  • New Zealand Occupational Hygiene Society - Full Member
    New Zealand Institue of Safety Managment- Graduate Member
  • Bachelor of Science (Chemistry)
    Post Graduate Certificate Health Science
My Skills and Experience

Postal address

50 Claremont St
Maori Hill
Dunedin 9010

Street address

50 Claremont St
Maori Hill
Dunedin 9010