Document om7vmKxV3pzqvjkGNXpRpqwR8

Occupational Health and Safety Products Division'3M 3M Center St, Paul. Minnesota 55144-1000 612/7331110 January 15, 1986 &c : F,. I. King F. ", Pieper 3M Mr. Roger Kane ROKAN Corp. 103A Industrial Blvd. Corona, CA 91720 Dear Mr. Kane: I have enclosed one #3520 Organic Vapor Monitor to replace the #3510 Monitor which was overloaded with methylene chloride. After you have exposed this monitor, please return it, along with a copy of this letter to Mr. R. M. Pieper, 0H&SP/3M, 230-BE-07, 3M Center, St. Paul, MN 55144. We will analyze the monitor and advise you of the results. For future monitoring of methylene chloride, I would recommend the use of the #3520 Monitor, which has a much greater capacity for methylene chloride than does the #3500. Thank you for your interest in our products. Very truly yours. Senior Technical Service Representative JAK:smt Enclosure 3H 010793