The water was cold and clear in the sample tube.

Last year I went on an afternoon's canoe trip in central Jersey, taking some sample tubes with me.

He stooped, examining it The sample tubes were full.

He closed the drawer silently and moved to a set of larger sample tubes racked on a desk.

But no sooner had she put it in a sample tube that she noted activity from the hole she'd left.

Errors due to inefficient packing in the sample tube are difficult to eliminate.

So she hovered over the nearest of the lakes, a brilliant blue reflecting the clear skies above, and sent down a sample tube.

He stared in horror at the pipes and sample tubes, at all the bodies.

He inserted the sample tube into the compact spectrometer.