SAVE TIME & MONEY!
The Orange Device from gke serves as a dual-purpose monitoring system for both the Bowie Dick/Helix Test as well as for routine monitoring.
The device can be reused over 10,000 times - one device saves the cost of another 40 devices! 
Most other plastic type devices on the market have a limited life span such as 250 cycles.
The GKE Orange Device simulates the penetration requirements of complex hollow instruments, solid instruments and porous loads!

Also buy with GK-F211-252: GKE Batch Monitoring Indicator Refill Box of 250