FIELD: chemistry.
SUBSTANCE: degree of refinement and determination of remaining life of a chemical sorbent - mercerised wood - is carried out by monitoring change in colour thereof from white and brown shades to black in proportion to saturation of the absorbent with acidic compounds depending on content of the absorbed component in the sorbent, equal to 0-45 wt %, with degree of refinement of the sorbent from 0-100%, wherein the wood fibre is a colour indicator.
EFFECT: simple and efficient monitoring of the state of a sorbent, from the visual appearance of which the criteria of its refinement and degree of saturation with an adsorbate can be determined.
4 cl, 1 ex, 3 tbl, 4 dwg
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