Foster® 32-60™ (blue) Asbestos Removal Encapsulant, when used full strength (undiluted), makes an excellent post removal, residual encapsulant. Testing at Underwriters Laboratories, Inc., in conjunction with W. R. Grace Company’s Retro-Guard and Type 106, and Strong-Lite Products Corp. FP-2B, resulted in UL Classification of the system. See the UL Fire Resistance directory for complete information.