The volumetric flask is a common consumable. How to judge whether the purchased volumetric flask is qualified? Let’s give a simple form to everyone so that everyone can easily judge whether the glass container is qualified. You can fill the container with water and check with the balance. The standard capacity of the capacity bottle

Washing liquid, referred to as detergent or lotion, is often used for glassware that is not easy to brush with brushes, such as burettes, pipettes, volumetric flasks, retorts, etc. It is also used for washing crapware that has not been used for a long time and fouling that the brush can not clean. The principle

A burette is an essential volumetric glassware in laboratories, designed for precise titration and liquid measurement, ensuring accuracy in chemical experiments. Key Takeaways: What is a laboratory burette？ A Laboratory Burette is a volumetric glassware used to accurately deliver an indeterminate amount of liquid. It is made of a slender and uniform glass tube with

1、There are three conditions in total. (1) Analytical balances with accurate weighing substances and vessels measuring solution volume (2) Standard solutions capable of titration (3) Indicators for accurately determining the theoretical endpoint. There are four categories, acid-base titration, complexometric titration, redox titration, and precipitation titration. The acid-base titration method is a titration analysis method based on

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Choose the appropriate analytical method, increase the number of parallel measurements, and eliminate systematic errors in the assay. To make the accuracy high, first must require high precision, but high precision, does not mean that its accuracy is also high, because there may be a system error in the measurement, it can be said that

How to open a volatile reagent bottle in summer? How does the solution stored in a glass bottle change for a long time? The solution will contain sodium, calcium, silicate impurities or some ions in the solution will be adsorbed on the glass surface to reduce the concentration of the ions in the solution. How

Volumetric flasks are primarily used to accurately formulate solutions of a certain concentration. It is a slender neck, pear-shaped flat-bottomed glass bottle with a ground plug. The bottleneck is engraved with a marking. When the liquid in the bottle reaches the marking line at the specified temperature, its volume is the number of volumes indicated

First, the role A burette is a gauge that accurately measures the volume of a standard solution during a titration operation. There are tick marks and values ​​on the wall of the burette. The minimum scale is 0.1 ml. The “0” scale is on the top, and the values ​​from top to bottom are from

1. What conditions should be used as a benchmark? Answer: (1) High purity, above 99.9% (2) Composition and chemical formula are completely consistent (3) Good stability, not easy to absorb water, not easily oxidized by air, etc. (4) Molar mass is large, weighing is large, and the weighing error can be reduced. 2. What are