Many buyers blindly chase high activated carbon indexes, yet still face poor purification effects and short service life. The core reason is simple: confusing Iodine Value, Methylene Blue Value, and CTC scenarios. These three key indexes cannot be generalized; each has its own exclusive application field.
Never judge water treatment carbon by Iodine Value. The Iodine Value only tests micropore adsorption for tiny gas molecules, which dominates air purification. It works perfectly for removing formaldehyde, benzene and low-concentration VOCs, but fails to judge the decolorization and impurity removal capacity of water treatment activated carbon.
Methylene Blue Value is the important point for activated carbon used for water treatment. It accurately reflects the mesopore structure performance, which is key to intercepting colloids, organic pigments and medium-molecule impurities in water. A high iodine value means nothing for wastewater decolorization-only a qualified methylene blue value guarantees stable water treatment results.
CTC is the industrial waste gas threshold index. Different from conventional air purification indexes, it represents the high-load adsorption and anti-saturation capacity of activated carbon for high-concentration industrial VOCs and flue gas. For industrial waste gas projects, CTC value is far more authoritative than iodine value.
