I did my pa1, pa2, pa4 and pa6 with Robert Patmore ten years ago. Nice bloke and like people have said nothing to worry about. If you've been used to handling and working with chemicals it's just pointing out the basics. Knowing what the warning labels mean, a small amount of cosh, lots of common sense. Knowing how to read what the chemical is and application rates, it's all on the labels the biggest part of the course is teaching you how to read the labels to find out what you need to know. Then simple maths. Most chemical can have application rates for crop sprayer. So just bacic maths to work how much chemical to water ratio for a knapsack sprayer divided by the difference in capacity of the rate of spray per litres per hectare. Very simple course. As said listen and learn.
