A mid-range temperature cement retarder with low dispersing characteristics. VC-R1L is

designed to perform efficiently in low to mid-range temperature ranges when used

individually. Additionally, VC-R1 is can be used in high temperature ranges when used in

combination with co-retarder VC-RE3. In application, VC-R2 successfully performed in

slurries with temperatures of over 175°F (80°C) when used individually. The retarder is well

suited for all API classes of cements.