Question: You want to prepare static-test-atmospheres in Tedlar bags in order to calibrate a photoionization detector (PID). You are going to use the PID to

You want to prepare static-test-atmospheres in Tedlar" bags in order to calibrate

You want to prepare static-test-atmospheres in Tedlar" bags in order to calibrate a photoionization detector (PID). You are going to use the PID to evaluate worker exposure to perchloroethylene in a dry-cleaning plant The current ACGIH TLV for perchloroethylene (CAS: 127-18-4) is 25 ppm You want to prepare three different concentrations bracketing the TLV in order to calibrate. Your target concentrations are %, 1, and 2x the occupational exposure limit (OEL). You will use a dry-gas meter to introduce five liters of clean air into each of the three bags, and a microliter syringe to transfer the perchloroethylene (o 1.62 g/mL). Calculate the required volume of liquid perchloroethylene that you will add to each bag. Bag #1: Concentration= Bag #2: Concentration= Bag #3: Concentration= Quantity of perchlorocethylene (uL)_ Quantity of perchloroethylene (ul)_ Quantity of perchloroethylene (uL)_

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