Summary of the determined chemical composition of HD 188112. The top panel shows the abundances relative to the solar ones (Asplund et al. 2009) and the bottom panel the absolute values. Down-pointing triangles indicate upper limits determined for C, N, and O. The stars in the bottom panel indicate abundances predicted by radiative levitation (P. Chayer, priv. comm.). No support is expected for oxygen and magnesium, thus the stars are at the bottom of the plot. The green crosses indicate the average abundances for sdB stars.