Whatman GF/A filter, mounted by hand for quality.
Sturdy, self-adhesive card.
Working aperture is 25mm.
All cards are supplied with discrete CES details.
A large area is blank to accept printed bar codes or other information for identification purposes.
Designed for use with the BTS174 PAS Personal Filter Holder
Cost per box of 100 - £83.33*
* Plus VAT at standard rate + shipping
**Equivalent to Whatman 541 filter
# Recommended shelf-life of all Card Mounted Filters is 2 years from delivery