@jenny2002ni Hi Jenny, excellent professional question. 
The short answer is: “Yes!”
Of course, I’m unable to speak to the statues/regulations within your state specifically & will leave that component open for a Reply from our learned colleagues within the State of Pennsylvania.
I admire you & how you’re choosing to prepare yourself for creating a professional business.
I also hope you have created a comprehensive Business Plan to guide you forward as well.
There are several threads that advise on this topic within the Notary Cafe forum. Here is a listing of those threads:
https://forum.notarycafe.com/search?q=%22jurat+stamp%22
Also, I specifically have already posted on this topic within the Notary Cafe forum. You can find this post within this thread:
Just know that many years ago, before I ordered a separate stamp for acknowledgments and an additional separate stamp for jurats, I often found myself handwriting the certificate text (from a template) when needed on General Notary Work [GNW] for “missing” certificates.
It was quite tedious and time-consuming.
As a result, it was an easy decision to purchase stamps for these “missing” certificates.
In addition, I will strongly advise ALWAYS to query the signer by asking them to identify the type of certificate they will need for their document.
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CAUTION: Remember that it would be unlicensed practice of law for a notary to make the decision regarding the choice of certificate.
For future queries, remember to Research the immediately available information found within the Notary Cafe database.
This information is a GOLDMINE!
Most members express that they find it difficult/NEARLY IMPOSSIBLE to locate the Search Function in order to access the wealth of information available within the database.
To be helpful, I’ve inserted an image for you & others [see below] to help members locate it to unlock the wisdom & knowledge of other members on the forums.
