Thank you for your questions! I can gladly help you out here! The only Nicotine brand we use and always have used is NicSelect. As for the Nicotine Salts, Nicotine Shields, Pure Nicotine and Regular blends I'll explain everything.
First we'll start with Nicotine Salts. Nicotine Salts is created using NicSelect Nicotine. It appears to be in liquid form just like regular blends of Nicotine that would be VG or PG based! However, we add a proprietary blend of certain compounds that make the Nicotine ultimately easier to vape at higher concentrations. For example, with Nicotine Salts you can vape a 36mg with minimal or no trace of Nicotine burn at all! You still will receive a strong Nicotine head rush but without that harsh taste and alteration of the flavoring. Our Nicotine Salts are only to be vaped between 10-40watts and used at 20-45mg.
Second, the Nicotine Shield! The Nicotine Shield is a regular blend of Nicotine in VG or PG containing NO Nicotine Salts. This is simply a base however, the packaging is exponentially different. A Nicotine Shield comes in a Argon packaged glass amber (brown) bottle with a needle insertion under the cap. Nicotine Shields are best for DIY consumers because it reduces oxidation of the Nicotine drastically and is meant to last over long periods of time.
Third is the Pure! The Pure Nicotine we sell just like all of our other products is only from NicSelect. Pure Nicotine generally ranges from 995mg-1005mg in strength and is extremely toxic. This is not recomended for DIY consumers due to its incredibly high strength and harm it could cause to someone. Pure Nicotine contains no base and is untouched and unopened by our staff. Being kept in a freezing industrial food grade refrigeration system to ensure freshness and great quality as if it was from NicSelect directly.
Last, the regular Nicotine blends. This is the simplest of our Nicotine products. We simply take Pure NicSelect Nicotine and dilute it down using VG and PG in our food grade clean room system for businesses and DIY consumers like yourself. You can find our regular Nicotine products in various strengths ranging from 100mg to 3mg.
Let me know if you have any other questions!