Is Your Pesticide Spraying Equipment Compliant?

Vehicle mounted pesticide application equipment must have a valid NSTS certificate. Learn what testing involves, how often it’s needed, and why it matters.

A man wearing PPE spraying inside of a barn with a knapsack sprayer

Why Sprayer Testing Matters in the Amenity Sector

All vehicle-mounted application equipment used to apply professional pesticides must hold a valid test certificate – much like an MOT for sprayers. These certificates are issued under the National Sprayer Testing Scheme (NSTS) and apply across sectors where pesticide equipment is used, including agriculture, horticulture and the amenity sector.

The term amenity covers a wide range of public and commercial spaces such as:

Golf courses
Playing fields and sports pitches
Railways
Footpaths and highways

Because sprayers in these environments operate in public spaces, they are highly visible and subject to increased scrutiny. Ensuring equipment is properly tested helps reduce the risk of health hazards or environmental contamination for operators, the public and surrounding areas.

Promoting Best Practice

The amenity sector is supported by Amenity Forum, which champions safe, responsible and sustainable pesticide use. It encourages best practice across the industry while promoting public confidence in how pesticide applications are managed.

What Is the National Sprayer Testing Scheme?

The NSTS was established under the Sustainable Use Directive (Plant Protection Product Regulations 2012) to improve both equipment standards and legislative compliance.

It provides testing for all types of Pesticide Application Equipment (PAE), including:

Currently, the scheme inspects over 20,000 machines each year, helping ensure accurate application and leak-free operation.

How Often Do Sprayers Need Testing?

Once a sprayer is over five years old, the frequency of NSTS testing depends on the boom length. Regular testing:

Protects human health and the environment
Helps prevent over-application or leakage
Reduces product waste and operating costs

Please note: Crops and Fresh Produce Assurance Schemes often have higher compliance requirements for pesticide equipment checks.

What About Knapsack and Handheld Sprayers?

Knapsack, handheld and pedestrian sprayers do not legally require NSTS testing, but they must still be:

Inspected regularly
Declared fit for use by a competent person

A competent person should:

Have practical experience with the equipment
Hold a recognised Certificate of Competence for pesticide application

Any faults identified must be repaired and recorded. The NSTS provides an example inspection sheet, and operators should maintain clear records of all checks.