气密性进样针

• teflon? pfte tip replaceable plunger - to give gas tight seal
• borosilicate glass - inert to gc solvents and organics
• stainless steel - inert and non-reactive
• industry standard size - consistent syringe fit
• permanent scale markings - solvents won’t wash off the markings
• white scale backing - easy-to-read improves reproducibility

syringe specifications

temperature limits:

• 5– 115c for removable needle syringes
• 5– 70c for fixed needle syringes

volume specifications:

• accuracy 1%
• reproducibility (displaced volume) 1%
• maximum safe working pressure: 5 ?l to 100 ?l – 1000 psi; 250 ?l and 500 ?l – 500 psi; 1 ml to 5 ml – 400 psi;
• maximum functional pressure: 100 psi

materials used:

• gas tight plunger tips – ptfe
• glass – borosilicate
• metal flanges – stainless steel; nickel plated brass
• needles – stainless steel