Precision Boyle's Law Apparatus, 1 Each

United Scientific® Precision Boyle's Law Apparatus by United Scientific is a quantitative gas law apparatus with an absolute pressure dial gauge reading 0 to 500 kPa in kPa and psi. Air is sealed by hydraulic oil in a thick-walled, constant-bore glass tube with a safety shield, and built-in scales with movable markers measure volume. An included bicycle pump and needle valve give precise pressure control for upper-level physics and chemistry labs.