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All-Teflon fluid path for droplet generation and droplet–MS analysis. (A) Droplet generation is accomplished using a 120/250 Teflon sipper connected to a 250/1600 carrier tubing via a wax seal (B) during MS analysis droplet carrier tubing is connected to a 150/360 Teflon needle by a zero dead volume PEEK union. (C) Alternatively, a 120/250 Teflon needle can be inserted into the droplet carrier tubing directly and sealed with wax.
