OH Learning.com - advancing occupational hygiene worldwide.

Support OHTA 

Please consider donating whatever you can to support OHTA.

OHTA is a registered UK charity (charity number 1168722). We rely on sponsors and supporters who share the aims of OHTA to provide funding for investments such as new course development, translations into multiple languages and scholarships. We are very grateful to the many individuals and organisations who help to make our work possible.


You can donate here:



Donors will be routed to the Paypal website to pay and will then be returned to the OHlearning website. Please note that donations should be entered in US dollars and the Paypal system will display the amount that you will be charged in your local currency. A receipt will be emailed to you automatically.

Practical demonstration during an OHlearning course in Hyderabad, India

Photo courtesy of Lalitha Burra, Nayati International