|Hopkinton-based Caliper makes lab instruments. (Istockphoto.Com)|
Lab instrument maker PerkinElmer Inc. agreed to buy Caliper Life Sciences Inc. for about $600 million to expand in molecular imaging. The $10.50-a-share deal represents a 42 percent premium over Hopkinton-based Caliper’s closing price Wednesday. Kevin Hrusovsky, Caliper’s CEO, is expected to join the top management of Waltham-based PerkinElmer. Caliper also makes lab products. The acquisition will give PerkinElmer products for DNA sequencing and more offerings for tissue imaging.