A new environmental system is available for this company's MCR series of rheometers. The new system features an independently controlled Peltier hood that reduces thermal gradients to insignificant levels. Designed for use with parallel-plate and cone-and-plate measuring systems, the PTD150 features a continuous temperature range of -30 degC- 150 degC. The new system is available on all new MCR instruments, and as an accessory for existing MCR rheometers. Circle No. 154