Mass. Gen. Laws ch. 21H § 6H
Every manufacturer of a mercury-added formulated product shall, upon a written request from a health care facility, disclose in writing the mercury content of any product used in its facility that contains more than 1 part per billion of mercury. The manufacturer shall also disclose to the health care facility information needed to determine the mercury content of a component manufactured by another manufacturer which is part of the final product. This disclosure shall further provide the method used in developing the analysis performed for total mercury content. These products shall include, but are not limited to: acids, alkalis, bleach, materials used for cleaning or maintenance or disinfection, stains, reagents, preservatives, fixatives, buffers and dyes.
Mass. Gen. Laws ch. 21H, § 6H