Even if they do, this is from their site:
"The fourth and most important component of e-liquid is Quality Control. Our e-liquid is proudly made in the USA, making it the obvious choice over the risky overseas e-liquid. The production of all our e-liquid nicotine base is done within the proper laboratory facilities, and conducted by trained chemists, ensuring that proper procedures are always followed. Halo e-liquid Nicotine levels are carefully monitored and randomly tested for quality and concentration. In addition, Halo e-liquid bottles are shipped not only with an expiration date but with Lot numbers as well. We want all Halo customers to rest easy knowing they purchased a great tasting e-liquid developed under the quality control standards."
There is really nothing wrong with BE nicotine, it was just the concentration that was off. Can be deadly but vendors should be testing their product anyway. As halo has assured here.