Ces papiers filtres fabriqués à base de linters de coton de haute qualité sont la version fine du grade 42. La finesse réduit la teneur globale en cendres, ce qui rend ces papiers filtres parfaitement adaptés aux analyses se fondant sur le poids à sec sans cendres.

• Accurate ash free dry mass measurements
• Fine nominal particle retention rating of 3 µm
• Filtration speed (Herzberg 995 s)
• Typical thickness of 180 µm

Cytiva's business offers other ashless grades with different particle retention ratings, as well as hardened ashless grades to ensure accurate measurement during analyses of samples that are strongly acidic/alkali.

Fast gravimetric analysis of fine particles. Gravimetric analysis can be time-consuming when filtration of fine particles is required. Because of its reduced thickness, Grade 44 ashless filter paper from Cytiva provides faster filtration of fine particles when compared with thicker papers of similar retention rating, such as Whatman Grade 42 paper.