Dear valued customers


Thank you for your support over the years. has now closed down.  We had been paying for the web hosting, merchant account and payment gateway out of Steve’s teaching salary but this has become too expensive to maintain so we have decided to close the site down.


The printed versions of the books, "Smog Refresher Course” and "Lab Scopes: Introductory & Advanced” are still available on the AES website:


Lynley will still be providing technical support for customers for the next few months through the following email addresses:

  1. Work email: (checked every weekday)

  2. Home email: (checked every second weekend)


Thank you once again for your support.  We wish you all the best for the future,


Steve and Lynley McAfee