192 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS Orifice insert •••Load c II I' e coupling i• Universal joint l lStator [Crosshead lJ Aluminium frame Locking pin• •-'•"-----Rheometer barrel locator I •'"'•'•- Swivel joint (ball & socket) [• •- -Brass cap Figure 3. lnstron crosshead assembly. Brass plate-- - Brass bolts Perspex barrel Cap Stainless steel connecting rod Aluminium piston Toothpaste tube (•') Figure 4. Mk II rheometer barrel.
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