Test tube racks are made to hold multiple test tubes upright at one time for easy organization, transport, or washing, or for placement in an autoclave or refrigerator.
Strongly constructed with wooden material, designed 12 holes in one row and 12 draining pins.
Designed to accommodate tubes up in and out both positions.
A stethoscope is a medical instrument for listening to the action of someone's heart or breathing.
A small disk-shaped resonator that is placed against the chest and two tubes connected to earpieces.
It is the most frequently used type of stethoscope and it uses a phenomenon that transmits sound from the air-filled hollow tubes of chest piece to the auscultator's ears.
The acoustic stethoscope is a two-sided stethoscope.
