Do you know what to do about the new regulations under the National Sprayer Testing Scheme?
UK regulation requires that all pesticide application equipment in use is tested by 26th November 2016.
On this link you will have such a good explanation of that is required that I have nothing to add other than “good luck”
direct link to NSTS information
http://nsts.org.uk/static/assets/downloads/SprayerTestingLeaflets.pdf