removing grout haze from ceramic tile

[jayusdeeus]

Thanks in advance to any/all that reply. Big rookie mistake here. Just finished ceramic tiling the bathroon floor and shower and did not remove the excess grout soon enough leaving a whitish haze over about 1/3 of the shower tiles. Floor seemed to come up OK. Am I looking at a chemical removal? My razor blade approach is painfully slow. Used Durabond sanded fortified tile grout which contains Portland cement. On Durabond's web site they have a product called "Acidic Cleaner" by CeramaSeal. Would this be approriate for the job?
Thanks again,
jd

[Davestone]

You can try some plain water and a scrubbing pad,or use the cleaner, just foolow directions, let it sit on the tile awhile, and use the scrubbing pad or acid brush,and be sure to clean water rinse it after.

[jayusdeeus]

I got off about 2/3 with warm water and scrub brush but it's hardened to the point where it is ripping up my brush. I'll give the acid a try and post back. Do you have a recommendation for any particular acid cleaning product for removing Portland cement based grout?
Thanks again,
JD

[Davestone]

Sulfamic acid crystals are the acid of choice although white vinegar works also.