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Introduction to Experimental Equipment

Introduction to Experimental Equipment

2021-11-12

Experimental equipment primarily refers to the instruments and tools specifically designed for students to use in laboratory classes. This includes physics, chemistry, and biology experiment kits for junior and senior high school, as well as individual laboratory apparatus such as microscopes, magnifying glasses, voltmeters, ammeters, test tubes, beakers, evaporating dishes, alcohol lamps, gas‑washing bottles, funnels, graduated cylinders, balance scales, volumetric flasks, and gas‑displacement apparatus.

Reagent Bottle Classification

Reagent Bottle Classification

2021-11-12

Glass, plastic; glass stoppers, rubber stoppers; wide-necked, narrow-necked; brown, transparent; ground‑glass, unground‑glass—among many other classification methods.

Definition of a Petri dish

Definition of a Petri dish

2021-11-09

It was originally designed in 1887 by the bacteriologist Julius Richard Petri (1852–1921), who worked under the German biologist Robert Koch, and is therefore also known as the “Petri dish.” Due to its fragile, breakable nature, the dish should be handled with care during cleaning and when moving it—always picking it up and setting it down gently. After use, it is best to clean the dish promptly and store it in a secure, stable location to prevent damage or breakage.

Basic Information on Test Tubes

Basic Information on Test Tubes

2021-11-09

Test tubes come in various types, including standard test tubes, conical test tubes, and centrifuge tubes. [1] The dimensions of standard test tubes are specified as outer diameter (mm) × length (mm), such as 15×150, 18×180, and 20×200. Centrifuge tubes are designated by their capacity in milliliters.

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