up 1.5c (5%) on volume 500,000, which is high for this...

up 1.5c (5%) on volume 500,000, which is high for this stock.
Something in the wind.

Also, they produce this stuff in pebble form now.
In regard to limited repeat business, don't agree. The causes of the contanimation of water supplies are still there, so need ongoing applications. And, the market is big enough, and growing in types of uses, that it won't matter for a while.