Beakers and flasks differ in shape and use. Beakers are used for mixing while flasks are used for storage and prevention of contamination. Tumblers have measuring lines, but only graduated cylinders are accurate. Flasks are made of glass or plastic and have caps and lids for containment. Beakers are used for chemical and physical experiments, […]
Erlenmeyer flasks are conical glass or plastic laboratory equipment used to measure, mix, or hold fluids or chemicals. They have a large, round bottom for stability, a long neck for easy handling and clamping, and graduations for measuring fluids. They reduce fluid loss through evaporation, allow for heating without over-boiling, and are most commonly available […]
Antique perfume bottles were made before the 1920s and demonstrate construction techniques no longer used. They can be made of glass, porcelain, or metal and may include decorative accents. Collectors focus on specific eras, regions, or producers. Guides can help identify bottles, but experts should be consulted before making expensive purchases. Antique perfume bottles are […]
