This benzene chip is not currently available due to a quality issue with the reagent which was identified

during the manufacturing process.

We have two possible CMS chips as alternatives:

Benzene 50 – 2,500 ppb, 6406600

Benzene .05 – 10 ppm, 6406160

The expected availability of the chip, 0.2 – 10 ppm is the first week of August. We apologize for this

extended stock outage and assure you we are working diligently to resolve this situation.