Figure 2

Custom-designed MR probe and injection pump. (A) Sketch of one of the two ¹H/¹³C RF coil pairs adapted for 5-mm NMR tubes; (B) Picture of the MR probe highlighting the configuration of the two pairs of coils; (C) Top view of the injection pump (1) connected through a 2-way flow splitter (2) to two NMR tubes placed inside the MR probe (3).