LC-MS Methanol, (6 x 1 L) No LC-MS TIC signals higher than 100ppb Reserpine No LC-MS TIC signals higher than: 50PPB Reserpine (ESI + mode); 50PPB 4-Nitrophenol (ESI – mode) Very low metal concentration (<100ppb ) low particles packaged in glass bottles actual lot analysis printed...<>100ppb>