Will this affect my wort?
 

Is Nickel plated steel safe to use mashing (acidic, 150-170F, 75+ minutes) ?

http://www.amazon.com/Excellante-Nickel-Plated-Cooling-Steamer/dp/B001PZ9ICA/ref=pd_sim_sbs_hg_1

I do Brew in a Bag (BIAB) and would like to keep the bag off the bottom of the kettle when I apply heat. I was looking at various Cooling racks and Steamer racks. The Steamer rack has the advantage of being 2.5 inches tall, which I think is useful for keeping the base over the dip tube.

I am worried that even though it says Stainless Steel, this is from China, and for all I know its Nickle plated Lead, with Arsenic.

Any suggestions on what I could use at the bottom of the pot, to keep the bag off when I apply heat??