# NSTS sprayer test: dates, test centres and handheld checks

URL: https://leafwrit.com/uk/nsts-sprayer-testing/
Reviewed: 2026-10-28

[Open the official NSTS liquid-equipment testing page](https://www.nsts.org.uk/Tests/Liquid). Use its **equipment-type and postcode search** to find a test centre, and its certificate-number lookup to check when a test was registered. Classify the machine before choosing a due date: the published schedule separates larger booms and air-blast machines from smaller booms and other equipment.

A new machine needs its first test before it is five years old, then retesting every three or six years according to category. Assurance requirements can be more frequent. Keep the legal inspection schedule, your assurance conditions and routine calibration separately identifiable.

## Match the machine to the published category

Boom sprayers over three metres, air-blast sprayers and train or aircraft sprayers fall in the three-year category. The six-year category includes boom sprayers three metres and under, weed wipers, seed-treatment machinery and several other application types. Northern Ireland's operator guidance gives the same equipment distinctions.

| Equipment category in NSTS guidance | Published general schedule |
| --- | --- |
| Boom over 3 m; air blast; train or aircraft sprayer | First test before age 5, then every 3 years |
| Boom 3 m and under; listed specialist equipment | First test before age 5, then every 6 years |
| Knapsack, handheld and qualifying pedestrian equipment | Competent-person inspection and record rather than a formal NSTS test |

These are NSTS's general categories. The testing page separately identifies annual assurance testing for larger booms, air-blast sprayers and micro-granular nematicide applicators in the schemes it names. Do not use the general retest interval to override a shorter assurance schedule applicable to your business.

Write the actual boom width and application method into your machine directory. A tractor's registration or a broad description such as “small sprayer” does not establish which application-equipment category applies. Retain the machine identification and purchase or age evidence used for the first-test assessment.

## Download the handheld inspection checklist

[Open NSTS’s Hand-held Sprayer Routine Check List (PDF, V6.07.2025)](https://www.nsts.org.uk/Portals/1/Images/Banners/NSTS%20Handheld%20sprayer%20check%20list%20V6_07_2025.pdf?ver=qKD-NJvsMSeoph8J2DuXPQ%3D%3D). It records the owner, operator, machine make/model and identification, inspector and inspection date. The checks have pass, fail and repair-action fields, followed by a calibration sheet. Save the completed checklist with that machine’s history. This routine record accompanies the competent-person inspection; NSTS test centres issue formal test certificates for equipment in the formal testing route.

## Read the trolley and pedestrian clarification

Manually propelled or self-propelled trolley equipment with at least three wheels and a motorised pump belongs in the formal testing route, with the first test before age five and six-year retesting. Pedestrian equipment, for this purpose, has at most two wheels or a manually pressurised pump (clarification updated September 2024).

This distinction is useful for amenity and nursery equipment that may be described informally as a handheld or pedestrian unit. Give the centre the configuration, wheel arrangement and pump information if classification is unclear. Ask it to confirm the route before assuming that a compact machine is exempt from formal testing.

For equipment outside the formal test route, NSTS still specifies regular competent-person inspection, necessary repairs and a retained inspection record. Keep that record with the particular item of equipment, including any changes between inspections.

## Find the relevant test centre

On the NSTS page, select the type of equipment and enter the postcode for the relevant location. Contact a centre from the results and describe the machine, application system, boom width and any specialist fittings. Ask whether it tests that configuration and what preparation its examiner requires.

Prepare a booking note with the equipment identity, contact person and location. Confirm arrangements for access to the machine, test conditions and any repairs that need separate scheduling.

If you operate across several sites, identify which yard the examiner should attend and which person can demonstrate the machine. Distinguish a workshop address from the fields where it normally works. Keep the appointment and any preparation instructions together so that the examiner is not met by a different machine.

### Sprayer testing cost and the list of sprayer testers

The list of sprayer testers is the NSTS equipment-type and postcode search, which returns the test centres for your area. Ask the centre you choose from the results for the current sprayer testing cost (the NSTS sprayer test cost) and for the next available date.

### NRoSO and sprayer testing: two different schemes

NRoSO is the National Register of Sprayer Operators. It lists people, not machines. It uses continuing professional development (CPD) to keep operators' training up to date, and it is open to anybody who holds an appropriate certificate of competence. BASIS Registration was appointed to administer it in 2023. NSTS is the scheme for the machine: it tests the sprayer itself, and you find the test centres through the NSTS search described above. Keep the NRoSO membership evidence and the NSTS certificate as two separate documents, because one covers the operator and the other the machine.

## Establish the next due date from evidence

Collect the last test certificate, recorded test date and machine identity. Compare those with the relevant NSTS category and any assurance requirements. Use the scheme's certificate-number lookup to confirm registration information, then resolve an absent or mismatched entry with the testing centre.

The lookup shows when a test was registered. Do not rename a registration timestamp as proof of every aspect of the machine's present condition. Keep the certificate itself and the applicable schedule in the archive, rather than saving only a search-result screenshot or an informal reminder.

Where the machine has changed ownership, ask for the relevant certificate and identify it against the equipment received. Mark a missing document as an administrative issue to resolve. Do not invent a test date from the purchase invoice or assume that the seller's recollection is the certificate.

## Separate test, repair and calibration records

Professional users must conduct regular calibrations and technical checks of the application equipment they use, and routine inspection and calibration are separate from the formal test intervals. A formal inspection certificate is therefore one part of an equipment file.

For your own filing system, use separate headings for formal tests, repairs, nozzle changes and calibration. Give each entry a date and equipment reference. Link a fault to its repair and subsequent check so a later reviewer can understand the sequence without replacing the original observation.

If you use a [nozzle chart](/uk/sprayer-nozzle-chart/) during calibration, retain the tip reference and settings beside the measured output. If a contractor provides the machine, agree which certificate and calibration information the customer needs to see before the job.

## Prepare the certificate for an inspection or customer

Create an equipment index that identifies the current machine, certificate reference and relevant test date. Keep the supporting document available with the machine's other records. Record who checked a contractor's certificate and which machine it covered, as an internal handover practice.

A suggested file review includes whether the business name and equipment identity can be followed, whether a replacement document is needed and whether the assurance schedule has been applied separately. Ask the issuer to resolve a document error rather than editing the official certificate yourself.

## Common questions before booking

**The sprayer has not reached its first test.** NSTS gives a first-test schedule for new equipment; keep age evidence and check the applicable assurance conditions. First-test timing does not replace maintenance or calibration.

**The sprayer is small enough to fit on a trolley.** Use the published trolley clarification, including pump and wheels, rather than judging only by the size of the tank.

**The customer asks for annual testing.** Establish which assurance or contract condition applies. Annual assurance schedules are separate from the general testing intervals.

**The certificate number does not appear in the lookup.** Contact the issuing centre with the document and equipment identity. Keep the correspondence with the booking record until the discrepancy is resolved.

For Northern Ireland-specific administration, continue with [sprayer testing in Northern Ireland](/uk/sprayer-testing-northern-ireland/). For the treatment information that accompanies contracted work, use the [contract sprayer record guide](/uk/contract-sprayer-records/).

## Build an equipment register for a mixed fleet

Use a separate entry for each application system, even if several attach to the same tractor. Record the manufacturer's identity, your own asset reference, application category, relevant dimensions and certificate location. Keep the scheduled test, completed test and repair appointments distinguishable so an unfulfilled booking is never mistaken for an issued certificate.

For a leased machine, identify which party holds the documents and who contacts the test centre. For a shared machine, agree where updates are filed and how the other users will know a certificate has been replaced. Retain any classification clarification with the equipment details rather than only in a personal inbox.

Before the busy season, retrieve the documents for the machinery intended for the next jobs. Check that the identifiers match the actual machines available in the yard. If an applicator has been removed from service, mark its internal status clearly while retaining its historical records.

A useful equipment register supports the booking and handover process. When a design sits between the ordinary descriptions, give NSTS the precise configuration and retain its explanation alongside the schedule.

## Preserve the identity of replacement machinery

When an applicator is sold or replaced, keep its historical certificate attached to the retired asset in your register. Give the replacement its own identity and document trail. This prevents a familiar tractor name from concealing that the application equipment has changed. For uncertainty about an unusual design, obtain the classification from NSTS and retain the correspondence.

### nsts sprayer testing

Use the NSTS equipment-type and postcode search to find a centre.

### sprayer testing northern ireland

DAERA identifies NSTS as the designated provider; follow the separate NI guide for local responsibilities.

### sprayer nozzle chart

The chart supports selecting and calibrating nozzle output; a formal sprayer test is a separate record.

### spray record keeping

Connect each treatment with the actual equipment identity and retain the relevant supporting records.