The air purificationagent (6) can be bamboo charcoal tablets.
空气净化物(6)可为竹炭粒。
2
The effects of adding purifying agent during the process of water purification were studied. The best opportunity for applying purificationagent to water during purification process was obtained.
Some products can have "traces" of thiomersal when the chemical is used during the production process as an antibacterial agent, which is later removed during the purification process.