Generally .5 ppm of iron will stain and discolor white textiles. Chlorine is not a good choice for washing textiles when there is any significant amount of iron present in the water. The best way to wash under the conditions where iron is present is to use oxygen bleaches. When using commercial laundry equipment, an iron removing sour can strip iron or control the presence depending upon the concentration of the bath, and lower pH value of the water in the bath.
When iron is causing significant textile cleaning and whiteness problems in a laundry operation, I recommend installing a water softening system that utilizes de-iron salt pellets. A water softener can remove up to .2-.3 ppm of iron. This approach has great benefits for cleaning, whiting, and maintaining tensile strength of the textile fabric over more costly chemical alternatives.
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Fire in Jail Laundry
DURHAM, N.C. — A fire in the laundry room at a County Jail in Durham damaged goods but required no evacuation. The fire, which originated in a dryer, damaged hundreds of uniforms. In addition to the lost goods, the jail’s laundry sustained water and smoke damage. The fire was extinguished by the sprinkler system that had been activated.