Specialist filtration and environmental technologies group Porvair said it grew revenue by 8% in the nine months through August on-year.
Underlying revenue growth was up 11%, while pre-tax profit was in line with management expectations, the company said.
The acquired Keystone Filter operations had been moved to the group's Ashland facility in Vriginia and production had started as planned.
'Order books are generally healthy, with order intake strong in the third quarter, notably in aerospace and industrial and laboratory,' Porvair said.
At 9:41am: (LON:PRV) Porvair PLC share price was -13.5p at 502.5p