Filter Circles, 90mm Dia, Hardened Ashless Grade 540, 100/pk (1540-090) stretchability

stretchability

Square shape 1 7/8" x 1 7/8"

Sensor head design optimizes signal and shields detector from ambient light

Inspection port conveniently located on top of foot

Filter Circles, 90mm Dia, Hardened Ashless Grade 540, 100/pk (1540-090) stretchabilityWhatman filter papers are world renowned as the standard for laboratory filtration and are associated with quality, reliability and customer service. Manufactured from high quality cotton linters, which have been treated to achieve a minimum alpha cellulose contact of 98%. Used for general filtration and exhibit particle retention levels down to 2. 5 m. Used in qualitative analytical techniques to determine and identify materials. Offers a wide choice