We designed a clear tank with a nice amber color for GP® Heron V2 and another one for GP® Spheroid V4 made from ULTEM - a thermoplastic resin that offers outstanding elevated thermal resistance, high strength and stiffness, and broad chemical resistance, frequently used in medical instruments.
ULTEM® is the commercial brand name of polyetherimide (PEI), a thermoplastic resin like PEEK, which does resist chemicals, such as hydrocarbons, alcohols and halogenated solvents. We import our ULTEM rods from USA. As a resin has a degree of elasticity which makes it less prone to damage from accidental drops.
Glass can break with a drop, acrylic is prone to cracks from aggressive liquids, polycarbonate can contain BPA, while ULTEM doesn't and the menthol and cinnamon liquids we tested with ULTEM, cause no issue to it plus the material is inert taste-wise and to the most solvents.
Therefore, we can say that our ULTEM tank is a Translucent-Crack-Shatter-Corrosion/Chemical Resistant Tank and the last replacement tank you ever need.
GP® Heron tanks made from EU certified 316 SS for GP® Heron Base and Heron Bell v1, v1.5 & v2. Our insignia, the aeolipile is milled in polished finish upon the brushed tube. The tube is push fit, no threading. Take care during assembly with the bell and the base, both ends are not the same for the SS tube.
Length for Heron: 30 mm for v1 & v1.5 and 28 mm for v2 in SS and ULTEM in translucent amber color. OD: 22 mm
Length for Spheroid: 34 mm for v4 only in Ultem translucent amber color. OD: 16 mm. The tube has threading on the bottom and the upper part is push fit for the v4 bell. The aeolipile is engraved.