Microscopes; Constant temperature incubators for laboratory use; Droppers for measuring, other than for medical or household purposes; Drying ovens for laboratory use; Furnaces for laboratory use; Laboratory apparatus, namely, centrifuges; Laboratory chemical reactors; Laboratory equipment, namely, electric bath heaters; Magnet plates for laboratory use; Magnetic agitators for laboratory use; Oscillators; Precision balances; Ultrasonic instrumentation for testing machines; Laboratory apparatu...