Respirometer Subcategory_Specific Gravity Bottles Cast-iron uprights support a 38cm

Cast-iron uprights support a 38cm expansion bar against a friction-pointer dial reading 0 to 90 degrees

Single-pole double-throw brass knife switch on a durable plastic base

and acetate strips for hollow-conductor work

Pack of 10 Stoddard test tube clamps in stainless steel with finger grip securely holds test tubes during heating

5 inch base for precise angle measurement during wave-optics investigations

Respirometer Subcategory_Specific Gravity Bottles Cast-iron uprights support a 38cmRespirometer apparatus tracks gas exchange in living cells, tissues, or whole organisms for metabolic rate experiments in plant and animal physiology coursework.