Feasibility and Acceptability of Switching to E-cigarettes Among Cigarette Smokers Engaged in SUD Treatment

"The NJOY ACE is the commercial version of the Standardized Research E-Cigarette (SREC), which was developed by NIDA with NJOY for research purposes.~Nicotine pods:~* Sealed, pre-filled, non-refillable~* 1.9 mL e-liquid with 5% w/w nicotine~* Approx 300 (280-330) puffs/pod~Nicotine liquid characteristics:~* Volume of liquid per pod 1.9 mL~* Active (nicotine USP 5% wt/wt)~* Propylene Glycol USP \& Vegetable Glycerin USP - PG/VG Ratio 0.77~* Lactic Acid USP~Battery characteristics:~* USB Rechargeable~* Storage Capacity \~ 400 mAh~* Approx 200 (3s) puffs / charge~* 300 charge cycles to \> 80% initial capacity~* Time to full charge 75 - 85 min~* Voltage / Temperature settings not user adjustable"