How to use eclipse needle1/6/2023 ![]() Most syringes and needles fit together using the Luer system, which consists of a standardized male taper on the syringe and a corresponding female taper on the needle. Disadvantage is that plunger movement may be very stiff, especially for larger sizes (≥10 ml).Plungers are interchangeable and can be replaced.Metal or glass plunger with tight fighting PTFE piston on the end.Most pyrophoric liquids easily generate deposits which will jam the syringe.Liquid can be pulled by capillary action between the plunger and the barrel.The plunger has no restraint or detent to prevent it from being pulled completely out.These types of syringes should NEVER be used with pyrophoric liquids for the following reasons:.Plungers cannot be replaced if lost or damaged. ![]() Attempting to swamp plungers between syringes may result in jamming or leakage. Plungers and syringes are accurately ground to fit each other.Very sensitive to being jammed by dried deposits-requires diligent cleaning.Unsuitable for very viscous liquids which may cause unusably stiff plunger movement.Stainless steel plungers should not be used for liquids that corrode stainless steel (e.g. ![]()
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