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Direct red 28

CAS number
573-58-0
Also known as
Direct red 28 (dyes, benzidine)

UK workplace exposure limits

Our data hold no UK limit for this substance.

Sampling methods

MethodSamplingMedium AnalysisPart numbers
NIOSH 5013 Active (pump) HPLC 225-17P
225-3LF
225-1

Methods and limits as published by their agencies and summarised by SKC; check the current method and the limit that applies to you before sampling.

Source: SKC Inc. (USA), Sampling Guides, used with SKC's permission (opens in a new tab)