Hazard search

Silica, amorphous (inhalable)

CAS number
No CAS number

UK workplace exposure limits

LimitValueApplies to
8-hour TWA 6 mg/m³

Sampling methods

MethodSamplingMedium AnalysisPart numbers
MDHS 14/4
General inhalable or respirable dusts by gravimetric analysis (total inhalable)
Method document (opens in a new tab)
Active (pump) IOM with PVC filter 225-70A
225-5-25
NIOSH 7501
Amorphous silica by XRD (total inhalable)
Method document (opens in a new tab)
Active (pump) 5µm PVC filter in cassette 225-5-37-P
225-2LF
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 Ltd (UK), Hazard Search, used with SKC's permission (opens in a new tab)