High purity, seamless filters with a characteristic thimble shape. Applications include analysis of fats, oils, grease, pesticides, pollutants, other organics and additives in plastics and rubber materials.

Cellulose Thimbles:
Suitable for Soxhlet extractions of organic components
Dust sampling
Lipid content <0,1% by weight
Maximum operating temperature 120 °C

Borosilicate Glass Fiber Thimbles:Borosilicate glass
High temperature extractions or dust monitoring (≤500 °C)
Acid resistant (except hydrofluoric)
Acid washed for minimum trace metal content
Maximum operating temperature 500 °C

Silica Fiber Thimbles:
Use up to 1000 °C
No. 88RH is treated at 900 °C for 4 hours to stabilise the weight prior to use
Both 88R and 88RH are tapered for ease in loading into stack samplers

PTFE Fiber and PTFE/Silica Fiber Thimbles:
Durable, temperature-resistant
Non-adsorptive with respect to acid gases
PTFE is inherently hydrophobic
Little or no trace metal contamination