- Porvair expects to report constant-currency revenue growth of about 10%, with most markets experiencing good demand. Interim profits are in line with management expectations and will be ahead of those reported in 2015.

Order books for the second half are healthy, said the specialist filtration and environmental technologies group.

"During the period the Group acquired TEM, which is performing well. Investments were made in expanding manufacturing facilities in both the US and UK. Net cash at 31st May 2016 was £7.0m."

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