ChemStat 939

Distinguished by suffix E or G, ChemStat 939 Plus is a series of two chemically distinguishable, elastomeric materials each molded into a sole to which a bootie upper can be sewn. They are uniquely light, tough, and attractive. Their molded shape offers a sophisticated profile that improves flexibility and durability. Each compound is remarkably resistant to chemicals, slipping, and scuffing. In either chemical grade, ChemStat 939 Plus soles are available in 6 sizes to accommodate ladies' size 3 through men's size 15 (European 37 to 51).

For most cleanroom applications, the ChemStat 939E Plus sole is the sole of choice. ChemStat 939E Plus soles are static dissipative and are used customarily in electronics cleanrooms. They offer high durability, wearer comfort, and slip-resistance. For quality control purposes, ChemStat 939E Plus soles are colored medium gray and are stamped with the identifier ChemStat 939E.

Note: ChemStat 939E Plus soles offer very limited protection against exposure to gamma radiation. If subjected to gamma radiation, ChemStat 939E Plus soles will quickly harden and crack.

Note: For steam sterilization, ChemStat 939E Plus soles must be laid flat to avoid deformation.

ChemStat 939G Plus soles offer gamma radiation compatibility, as well as static dissipation, wearer comfort, and slip-resistance. They should be used only in sterile environments with a laundry protocol requiring gamma sterilization. Owing to their softer composition, ChemStat 939G Plus soles should be used in cleanrooms with smooth tile floors, not raised grid floors or floors characterized by gratings or similarly abrasive conditions. For quality control purposes, ChemStat 939G Plus soles are cream colored and are stamped with the identifier ChemStat 939G.

Note: The abrasion resistance of ChemStat 939G Plus soles is 1/3 that of ChemStat 939E Plus soles, based on Taber Abrasion testing using an H18 wheel. Therefore under similar conditions of wear and absent gamma sterilization, ChemStat 939E Plus soles will generally last about 3 times longer than ChemStat 939G Plus soles.

Note: For steam sterilization, ChemStat 939G Plus soles must be laid flat to avoid deformation.

The heel and toe areas of all ChemStat 939 soles are reinforced to resist premature wear. Raised bumps on the exterior of bottom of the sole reduce hydrodynamic slippage when fluids are present on tile or perforated floors.

The longevity of either type of ChemStat 939 Plus sole is determined by many factors, including but not limited to chemical exposure, cleaning and sterilization method, floor surface texture, sewing method, and frequency of wear. It is the responsibility of the cleanroom laundry and cleanroom operator to determine suitability for use of either compound in the selection of ChemStat 939 Plus soles. Because of the varied conditions found in electronics and sterile cleanrooms, no warranty is expressed or implied for the life of ChemStat 939 Plus soles beyond what is listed under Limited Product Warranty. Historically, ChemStat 939E Plus soles have met or exceeded the requirements of all standard 3 year cleanroom laundry contracts.

For added bootie durability, ChemStat 939T Plus is available. It is a mid-weight, high strength polyester fabric with a ¼” conductive grid used to reinforce the interface between the lightweight upper fabric and the much heavier ChemStat 939 Plus sole.

Technical Data