The cone shape needle has been specifically developed to withstand the multi injection demands of Autosamplers. They are also standard on microvolume and valve syringes.
Bevel needle tip - (Style #2) "BV"
A 20° bevel tip is the standard general purpose needle tip style supplied with SGE syringes. This style is designed for optimum septum penetration and prevention of septum coring.
Sheathed/Bevel needle tip - (Style #4) "T"
The same as the bevel tip, except a 0.7mm OD reinforcing sheath is silver soldered over the standard needle to within 10mm of the tip. The sheath provides exceptional strength to the needle.
HPLC needle tip - (Style #3) "LC"
HPLC valve injection syringes have 90° square tip needles with chamfered and polished edges to eliminate damage to the valve's rotor seal and stator face. This needle tip is also suitable for the pipetting of liquids.
Large Volume Injection
Side hole domed needle tip - (Style #5) "H"
Liquid samples are filled and dispensed through the side hole. The solid domed tip minimizes septum damage.
Domed needle tip - (Style #6) "D"
This style needle is recommended for use with pre-drilled septa. The tip is rounded and polished to facilitate septum penetration.
TLC/Gel Spot Plating
PTFE coated needle tip - (Style #7) "P"
The needle has a 90° square tip and a 20mm long film of PTFE coated over the tip. Ideal for dispensing aqueous samples without wetting the outside of the needle.