What seems to be the best concrete sealer and sprayer

I have about 700 sq.ft. of aggregate that a customer would like sealed. I have seen the posts on eating up pump up sprayers with sealer. What seems to be the best sealer and the best way to apply it.

Try here. http://www.sealnlock.com/

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Thanks much for the link. Can this be used on regular concrete, or is it pretty much just designed for pavers. Thanks

Thanks Randy for the call and all the good info on sealing concrete. Looks like ill be using the Endurable Sealer next time I get asked to seal some concrete.

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Is the endurable water based?