Hi. I have no answers to your question. That is not my field, but I am trying to develop a software idea that would need collaboration with companies that create those strips. However, my paper would be too long so I need to publish a preliminary paper which you can comment on in this link: https://www.researchgate.net/post/Online_Cheating_in_the_Reporting_of_Unsupervised_Rapid_Antigen_Test_Results

Hi Clare Mills !

You can check with them for the prices.

https://mdimembrane.com/programmable-strip-cutter

If not done on large scale you can use any type of guillotine cutter. Many cheap ones are available online even on Amazon.