Erratum for “Comparison of modified Matyash method to conventional solvent systems for polar metabolite and lipid extractions” (Anal. Chim. Acta 1037 (2018), (301–315), (S0003267018303982), (10.1016/j.aca.2018.03.019))

There is an error in the first sentence in Section 2.3 of the paper. The volume of methanol for biofluid extractions is missing and the water ratio is incorrect: Current incorrect version: “As described by Wu et al. [8], with some minor changes, first 75% ice cold methanol (32 μl mg−1 methanol and 10.6 μl mg−1 or 0.9 μl mg−1 HPLC water for tissues and biofluids, respectively) was added to samples and they were homogenised (tissue only) in a Precellys-24 bead-based homogeniser (Bertin technologies) for 2 × 10s bursts at 6400 rpm." Corrected version: “As described by Wu et al. [8], with some minor changes, first 75% ice cold methanol (32 μl mg−1 methanol and 10.6 μl mg−1 HPLC water for tissues, or 4 μl mg−1 methanol and 1.33 μl mg−1 HPLC water for biofluids) was added to samples and they were homogenised (tissue only) in a Precellys-24 bead-based homogeniser (Bertin technologies) for 2 × 10s bursts at 6400 rpm."