Cracking can occur at low caustic levels if a concentrating mechanism is present. In such cases, caustic concentrations of ________ ppm are sufficient to cause cracking.
Cracking can occur at low caustic levels if a concentrating mechanism is present. In such cases, caustic concentrations of ________ ppm are sufficient to cause cracking.
Cracking can occur at low caustic levels if a concentrating mechanism is present, and in such cases, caustic concentrations of 50-100 ppm are sufficient to cause cracking.
Cracking can occur at low caustic levels if a concentrating mechanism is present. In such cases, caustic concentrations of 50 ppm to 100 ppm are sufficient to cause cracking.