UPDATE: Potentially Explosive Hazmat Shuts Down Oser Ave

Suffolk County Police have shut down part of Oser Avenue Tuesday after a 55-gallon drum of chemicals delivered to Pall Corporation in the Hauppauge Industrial Park was found to be potentially explosive.

Pall Corp is a filtration, separation and purification leader providing solutions to meet the critical fluid management needs of customers across the broad spectrum of life sciences and industry, according to its website. 

Police said the material underwent a chemical change that tranformed it into a potentially volatile substance due to fluctuations in temperature during its delivery, according to police. Suffolk County police are attempting to get in contact with the out-of-state vendor who delivered the chemical to locate a chemical additive that will stabilize the materials when both substances are mixed together. 

Meanwhile, Oser Avenue has been shut down from Marcus Boulevard east to Plant Avenue. Police and Hauppauge firefighters are on the scene. 

Police said they expect the roadway to be shut down for several hours while the additive is obtained the materials stabilized. 

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