Filter Circles, 42.5mm Dia, Ashless Grade 42, 100/pk (1442-042) added Safety because the blade

added Safety because the blade never touches the skin

protective shield that allows for one-handed activation immediately after use to help minimize the risk of needlestick injuries as well as clear visibility of blood flashback

they resist tears

1-Piece Cuff

Filter Circles, 42.5mm Dia, Ashless Grade 42, 100/pk (1442-042) added Safety because the bladeWhatman 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