Funnel Filter Heavy 150mm -EIS-CH0458F offers a thoughtfully designed, durable resource for hands-on learning. Made of borosilicate glass having thick uniform walls. Heavy ÂÂ construction for greater mechanical strength and prolonged life with ÂÂ harder than normal usage. Dia. ÂÂ 150 mm, ÂÂ Stem Length ÂÂ 150 mm, Stem Dia. 1.6 cm.