Mass budget in the ISM of the quasar PJ183+05. Solid lines refer to the masses in dust (black), neutral carbon (brown), singly ionized carbon (red), singly ionized nitrogen (green), and doubly ionized oxygen (blue). The dashed lines show the corresponding molecular and ionized hydrogen mass estimates, after correcting for abundances following Nicholls et al. (2017) in the case of Z = Z_⊙, for a gas-to-dust mass ratio of 100, and for r₇₁ = 0.38 and α_CO = 0.8 M_⊙ (K km s⁻¹ pc²)⁻¹ following Carilli & Walter (2013). For the ionized medium, we assume a gas density n = 180 cm⁻³. We find that the molecular component amounts to M_H2 = (0.5 − 1)×10¹¹ M_⊙. The mass of ionized gas traced by low-ionization lines is (2 − 3)×10¹⁰ M_⊙, while the highly-ionized gas phase accounts for (1 − 5)×10⁹ M_⊙.