Simple Respirometer Timer 2 x 6" x 3/4"

2 x 6" x 3/4" Tongue Depressor

these 5mm thick pattern blocks are tough enough to withstand years of classroom use

Features a detailed view of all 23 human chromosome pairs

Included: 2 x 10-Inch Stainless Steel Laboratory Grade Straight Blunt Tweezers with Serrated Tip

Simple Respirometer Timer 2 x 6" x 3/4"The apparatus is designed for comparing rates of absorption or evolution of gases by small organisms, during respiration. The apparatus consists of two stoppered boiling tubes connected by three way taps to either limb of a graduated manometer. One tube holds the organisms and has a syringe for altering the level of liquid in the manometer during setting up. The other tube acts as a control thermobarometer. CO2 given off by the respiring organisms is