Crystal glass cup

A crystal cup is also a type of glass cup, with silicon dioxide as the main component, but it contains substances such as lead, barium, zinc, and titanium. Due to its high transparency and refractive index, this type of glass has a smooth and crystal clear appearance, hence it is called crystal glass. If lead is introduced, it is lead crystal. Lead free crystals are those that introduce substances such as barium, zinc, and titanium, glass cookware     .

Introduction to Crystal Cup



Firstly, a crystal cup is also a type of glass cup, with the main component being silicon dioxide, which introduces substances such as lead, barium, zinc, and titanium. Due to its high transparency and refractive index, this type of glass has a smooth and crystal clear appearance, hence it is called crystal glass. If lead is introduced, it is lead crystal. Lead free crystals are those that introduce substances such as barium, zinc, and titanium. How to distinguish between the two? By the touch. Due to the stronger thermal conductivity of crystals compared to glass, touching crystals with your hands should be cooler than touching glass. Look at the hardness. Natural crystals have a hardness of 7 and glass has a hardness of 5, so crystals can scratch glass. Look at the refractive index three times. Lift a crystal cup and rotate it towards the light, and you will find that it is like a beautiful handicraft, pure and transparent, reflecting a charming colorful light. Crystals can absorb luster, even ultraviolet rays, while ordinary glassware does not have glossiness, let alone refraction. Listen to the sound four times. Gently tapping or flicking with fingers on the vessel, crystal glassware can produce a light and crisp metallic sound, and a beautiful aftertaste ripples through the air, while ordinary glassware only produces a muffled "click, click" sound.



Production process and characteristics. The crystal cup body is made of high-grade crystal glass carefully processed and fired with advanced techniques. It adopts a high-temperature firing process of 640 ℃ to reach the critical point of crystal glass melting. It is transparent, pure, and non-toxic. At the same time, annealing process is used to ensure that the cup body can withstand instantaneous changes of cold and hot, explosion-proof and crack proof, without tail vacuum. It has the characteristics of high transparency, strong crystal sense, and wear resistance, and is crystal clear, elegant and elegant. At the same time, the double-layer glass structure has a certain function of cold and heat preservation; The mouth of the cup is polished smooth with a special process, providing a comfortable taste when drinking; More convenient to use, more reasonable in design, and more user-friendly. Advantages of crystal cups: As an important member of cup products, they have gradually demonstrated their advantages in drinking water. The advantages of crystal cup products include: the smooth surface of crystal glass material, easy cleaning, and health and hygiene. However, stainless steel cups, purple sand cups, and other products have unobservable gaps on their surfaces, making it easy for bacteria, impurities, and tea stains to adhere and difficult to clean; The crystal cup is transparent and pure. When brewing beverages such as tea, you can see the shape and color of the brew, bringing a good sensory enjoyment; Crystal cups have a certain degree of cold and heat retention, and have the best brewing effect, ensuring a good taste and repeated brewing of tea. However, the vacuum structure of stainless steel cups can easily cause the tea leaves to become sticky during brewing, affecting the taste; The floral patterns on the crystal cup are diverse and finely crafted, reflecting the user's taste and complementing the beverages in the cup; High end crystal glass cups, with their handmade craftsmanship and exquisite packaging, have become excellent gifts and collectibles.

Identification method

Ordinary glass products have a dull color, poor refractive index, rough workmanship, poor hand feel, and even some areas have bubbles, making a dull tapping sound. Crystal glass products have a relatively bright color, strong refractive index, exquisite workmanship, and good hand feel compared to ordinary glass products. They look like they are made of crystal and make a crisp metallic sound when lightly tapped. Compared to lead-free crystal glass products, lead-containing crystal glass products appear slightly thicker.


Judgment method

Appearance and texture can be distinguished: When buying crystal glass tableware, one can distinguish between glass, lead containing crystal glass, and lead-free crystal glass based on sound, texture, appearance, etc. There are two types of crystal glass containers: lead-free crystal glass and lead-containing crystal glass. Due to the unsatisfactory color, texture, and gloss of ordinary glass. Adding lead to glass can increase its refractive index, making it look like it is made of crystal. Therefore, it is called crystal glass, and various shapes of ornaments, crystal glass cups, crystal lamps, etc. are made of lead containing glass. The EU standard divides crystal glass cups into three types: lead-free, medium lead, and high lead. The lead oxide content of the medium lead glass cup reaches 24%; The lead oxide content of high lead glass cups reaches 36%. If crystal glass containers are produced according to EU standards, regardless of the type of product and the amount of lead contained inside, there are strict international regulations that should be safe for human health. However, due to the lack of standards in our country, it cannot be ruled out that there is a high degree of arbitrariness in the production of individual manufacturers, making it difficult to ensure product quality.