硬度要求

The hookah charcoal must be hard enough, otherwise, it will crack when it burns. A piece of high-quality hookah charcoal will not crack during the combustion process and is always a complete block. The 水烟炭机 developed by WOOD machinery has the ability to press hookah with large hardness, which is popular by domestic and foreign customers. There are a variety of pressures to choose from, the largest can reach 100 tons, which meets the hardness and density of hookah charcoal.
Pinch the hookah charcoal with your hands, or hit the hookah charcoal against the cement floor. If it does not break or drop the slag, it means that the hardness is up to the standard.

水烟炭的密度

优质水烟炭的密度相对较高，一般来说，比重超过1.3。我们可以进行小试验，将一块水烟炭放入水中，如果沉下去，说明其比重大于1，是合格的水烟炭。水烟炭可以在水中保持完整很长时间。如果短时间内溶解，说明水烟炭的质量不好。

点火时间

水烟炭的一个主要特性是其快速燃烧。它不同于烧烤炭。一般来说，点燃后五分钟内点燃完毕，然后会有一层灰。优质水烟炭要求灰分能自动脱落。

燃烧时间

The most important feature of hookah charcoal is its long burning time. If the hookah charcoal is burned out during smoking, another piece of charcoal must be re-ignited, which is undoubtedly very troublesome. Therefore, customers will make requirements for the burning time of hookah charcoal. For example, 15mm25mm25mm hookah charcoal burns for at least one hour, while 25mm25mm25mm hookah charcoal burns for at least 90 minutes.

灰分特性

一般来说，客户要求水烟炭的颜色为米白色，但灰分的颜色很大程度上取决于水烟炭的原材料和粘合剂成分。优质水烟炭的灰分含量不应高于6%。