Description
WILLIAMS FIRE & HAZARD CONTROL (WILLIAMS) PKW (Purple-K) dry chemical is a potassium bicarbonate-based fire suppressing agent, produced by a proprietary process and very effective against most Class B fires. PKW dry chemical is a free-flowing, water repellent, non-abrasive agent specifically formulated to create a highly-visible, dark violet discharge stream. This visibility assists the firefighter in precisely directing the PKW dry chemical stream (or dual foam/dry chemical stream) for efficient firefighting application.
 
Performance
WILLIAMS PKW dry chemical has been shown to be four to five times as effective as carbon dioxide-based suppressing agents and more than twice as effective as sodium bicarbonate-based suppressants against Class B fires. PKW dry chemical has been tested at operating temperatures as low as -65 °F (-54 °C) and as high as 120 °F (49 °C).
 
Quality Assurance
WILLIAMS PKW dry chemical is subject to stringent quality controls throughout production, from incoming raw materials inspection to finished product testing, and is manufactured in an ISO 9001:2008 certified facility.
 
Note: PKW™ contains 2.05% of Purple dye as compared to Ansul’s Standard Purple-K containing 0.0143% of the same dye.