Hi All,
If you're looking for a NATA accredited concrete tester in Sydney - I would not hesitate to reccmmend Testrite.
We had such good service that I wanted to give them a free plug. They did such a fabulous job and saved us a lot of heartache. Great service, great price and very helpful. We cancelled our initial tester with less than one hours notice on a Monday morning due to our slab pour being cancelled and they did not charge us a cancellation fee! They had extremely reasonable prices. They also ensured that the concrete subcontractors did not add too much water to the concrete!
I am not affiliated with the company in any way I just believe that good companies deserve more business by word of mouth!