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PrimeTest Series

PrimeTest Series

5th Edition Compliant

Our PrimeTest Series set the standard for light, portable, battery operated and simple to use portable appliance testers. The PrimeTest Series are relied upon by thousands of companies and PAT professionals every day. Whatever your requirement or application there is a PrimeTest to suit your needs.

These products are now fully compliant with the 5th Edition code of practice and packed with the latest PAT features.

Free PATMobile app available

We've added new features to our 5th edition versions of the PrimeTest Series

We’ve updated our PrimeTest range of trusted PAT testers to meet the test requirements of the 5th Edition Code of Practice.

They now come with some amazing new features* to make them even better than before, including:

• 250/500V insulation resistance tests
• Extended 5mA leakage measurements to comply with 5th edition
• New Class 2 FE and long lead test sequences
• Variable PASS/FAIL limits for Earth Continuity tests

*5mA leakage, Class 2 FE, Long Lead and variable PASS/FAIL not available on the PrimeTest 50.

Find out more about these popular and trusted testers below and get in touch if you have any questions or would like to arrange a 1-2-1 online demonstration.

PrimeTest 50 PAT Tester

PrimeTest 50

Easy to use push button operation
Shows simple pass/fail indication
Ideal for enhanced user checks

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PrimeTest 100 PAT Tester

PrimeTest 100

 Shows test result values
Accurate earth continuity testing
Ideal for smaller businesses

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PrimeTest 250+

Easy label printing with no set-up
 Store 999 appliance records
 Spreadsheet report via USB

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The Seaward PrimeTest Series are the original handheld testing solution, leading the industry for over a decade and now setting the standard again for 5th Edition compliant portable appliance testers.


Our PrimeTest Series of PAT testers have proven to be very popular with our customers worldwide, this is probably because they are easy to use, provide accurate and reliable earth continuity readings, as well as being light and highly portable.

Whether you are looking for a simple PASS/FAIL tester (PrimeTest 50), a tester that provides test readings (PrimeTest 100), or a tester with storage for results and downloading (PrimeTest 250+), then the PrimeTest Series has you covered.

Read on to find out more about these testers and the kits that are available, and if you're not sure which one is right for you, you'll find a comparison table further down the page.

PrimeTest Series Overview Videos

To help you understand the differences between each tester in our PrimeTest Series, our PAT expert Richard Slade has created 3 short videos highlighting the features of each of these popular PAT Testers.

If you have any questions about our PrimeTest Series please get in touch, we are always here to help.

Note: Once you have clicked play, please hover over the video and click the box in the bottom right corner to view in full screen mode.

PrimeTest 50

PrimeTest 100

PrimeTest 250 & 250+

Compare the PrimeTest Series

General Features PrimeTest 50 PrimeTest 100 PrimeTest 250+
5th Edition Compliant bullet bullet bullet
On-board memory     999 records
Handheld bullet bullet bullet
Battery/mains operated Battery Battery Battery (requires
mains for PE
current test)
Scanner & printer compatible Printer only
(PATMobile app*)
Printer only
(PATMobile app*)
Printer only
Electrical test functions PrimeTest 50 PrimeTest 100 PrimeTest 250+
Accurate earth continuity circuit bullet bullet bullet
Mains supply check bullet bullet bullet
IEC lead test bullet bullet bullet
Earth continuity 200mA 200mA 200mA
Insulation resistance 250V/500V 250V/500V 250V/500V
PE conductor current (earth leakage)     230V only
Touch current     230V only
Alternative substitute leakage   bullet bullet
RCD test     bullet
3 phase leakage     Requires adaptor
Data transfer features PrimeTest 50 PrimeTest 100 PrimeTest 250+
USB download     bullet
PC download/upload     Download only
Remote data transfer via mobile device Manual entry
(PATMobile app)
Manual entry
(PATMobile app)
  Request a Quote Request a Quote Request a Quote

PATMobile PAT Testing App

PATMobile app is the perfect answer for those who want a simple yet powerful record keeping solution for their PAT results.

It is designed to be the perfect accompaniment to Seaward’s PrimeTest range of manual PAT testers. Used together, they give you the tools to scan barcodes, take photos, store your PAT results, print a label and generate a report - with just a few taps thanks to our simple and intuitive user interface design.

Available on Android (iOS coming soon)

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