Top quality glassware made from Kimax, Pyrex, or equivalent quality borosilicate glass is chemical, heat and wear resistant. Stainless steel is smooth, seamless, and corrosion resistant. Plasticware is transparent, rigid poly-methylpentene, resists impact and handles temperature to 200°C. Order as single unit or package quantity.

Filter Flasks are thick-walled and the 1, 2, and 4L sizes have side tubulation for 3/8in (9.5mm) ID vacuum tubing. The 2 and 4L sizes are often used as pycnometers, and 1L flasks are often used in line to form a vapor trap for vacuum pump protection. GW-76 meets ASTM D 2041 and AASHTO T 209 specifications as a vacuum container for weighing in air only. Neoprene stoppers have 3/8in (9.5mm) hole. 3/8in Reinforced Vinyl tubing will not collapse under vacuum.