Most professional and trustworthy company Where to start... I've been dealing with these guys for a couple years now and there has never been a problem that was not resolved within 2 hours of emailing them and sorting it out. The consistency of the product blows me away, the quality is always extremely consistent and you know what you're going to get every time you place an order. Shipping is usually same day if placed early enougn. It is always priority usps and they send you the tracking as well. Not to mention have I seen products go out of stock ever. All around extremely professional and easy on to deal with. Out of maybe 30 orders none have not come on time. Highly recommended!

These guys only pedal inactive and watered down products I received my first order and both bottles of two different items were completely inactive. They sent a replacement that had the same batch number and was from the same inactive batch. I thought maybe this was a fluke so I tried to order from them again. I spoke to customer service who said they were making a new batch that would be active. Well I received this next order and again both bottles inactive. They sent a replacement again but for a different product as I thought maybe it was just those two products that were inactive. I was wrong this bottle is completely inactive. I have talked to customer support numerous times and even let them know I would be posting reviews and they still continued to send inactive items. I am so very displeased with this company and their products. I might have just as well burned over 200 dollars in a fire because I got burnt by this company bad.

They continuously send my package to… They continuously send my package to the wrong address even after telling them three times my REAL address. It’s intentional they want to returned to sender. DO NOT ORDER FROM THEM. My address is 8305 not 8395. I’ve corrected it four times and they won’t listen. I got scammed. Do not order from this. This review and the others I’m gonna write will disappear once i get my read package

Purchased a “Pam”chemical for research… Purchased a “Pam”chemical for research and received my order fast.I plan on making another purchase to compare chemical reactions,The solution isn’t the strongest so it took some trial and larger amounts then other company’s chemicals but it could have just been the batch.I only wish he offered powder substance chemicals for sale as well so it would be easier to test with the right amount. I will update review after trying other products.

Long time customer Long time customer I have been using P4S for years. Top notch customer service and communication. Have enjoyed their variety of products over the years, have seen some come and go. For the most part quality has been highly consistent. Some batches have been 'better' than others, yes, but overall my research results have been solid. For ease of use and consistency, these guys are as good as it gets.