• by vinux

When we talk about Purple Clay Teapots, we always mention its characteristics of keeping tea fragrant without the scent of boiled soup. It may be an exaggeration to say that the teapot will not go stale in hot weather, but it does possess other features that other teapots do not have, such as “breathability”.

Brewing purple sand tea: 1. Rinse the teapot and teacups with boiling water. 2. Place purple sand tea into the teapot with desired amount of tea leaves. 3. Pour boiling water over the tea leaves in teapot, cover and steep for few minutes until desired strength is reached. 4. Serve in teacups and enjoy!

Cross-sectional particles

The clay material used in our common purple sand teapots varies in mesh size, and it is precisely because of this that many friends often ask whether the permeability of the purple sand teapot is also related to the mesh size?

Number of items

The number of meshes refers to the size of the purple sand particles. When we grind and sieve the purple sand ore, we will use a sieve to determine the mesh size, commonly known as 24 mesh, 32 mesh, 40 mesh, 60 mesh, 80 mesh and 100 mesh.

The smaller the mesh size, the coarser the mud particles; conversely, the larger the mesh size, the finer the mud particles.

Cross-sectional particle

At the same time, the number of mesh also reflects the sand texture on the surface of the purple sand after firing. The purple sand mud with lower mesh number will definitely be relatively coarser and the feel will not be so delicate, and the texture of the sand will be more prominent.

Making sand with either too coarse or too fine granularity is very difficult. The purple clay teapots we often see are mostly 40 or 60 mesh, which has a delicate texture and sandy feeling, with the highest rate of success in making and good luster after aging and polishing.

Breathability

We mentioned earlier that the air permeability of purple sand is key to the particles of sand, which is an inherent attribute of the mineral material used for purple sand teapots.

After screening and washing, the purple sand

Here it needs to be pointed out that, when the number of meshes is not much different, its influence on air permeability is very small, for example, the same kind of mud with 60 meshes and 80 meshes has almost the same air permeability.

When we grind the mud too finely, it breaks down its physical structure and affects its breathability.

Compared to the mud with 60 meshes, the mud with 180 meshes almost has no breathability.

200 target mud

At the same time, the breathability of purple sand is also related to the amount of sand contained in its mud. It is impossible to judge the breathability just by looking at the number.

To summarize,

Therefore, when we discuss the relationship between mesh count and breathability, we can understand it this way.

The number of eyes cannot be used to judge the breathability;

The number of mesh is particularly large, close to 180 or 200, almost airtight, this type is mostly used for grouting.

Regarding the number of meshes and breathability, if you still have any doubts, you can leave a comment or directly add the WeChat at the bottom to ask us.