SGE's line of high quality microliter syringes provides precise sample delivery on a consistent basis. All syringes must pass at least 30 quality and performance examinations before being shipped. Without compromise, each SGE syringe offers the highest standard in analytical precision and accuracy. These syringes are manufactured of the highest quality materials to ensure maximum accuracy and reproducibility to 1%. Plungers are not interchangeable because each plunger is individually hand lapped into its own borosilicate glass barrel. All other syringe barrels are 6.5mm in diameter. Fixed needle syringes should not be heated over 70° C.