Advance Tech Service [P] Ltd. Manufactures Leak Proof Needle Flux Dispenser. Advance Tech Service [P] Ltd. Received EFY Award in Soldering Desoldering category. Leak Proof Needle Flux Dispenser is available in two models, with the model numbered FD-21 [non ESD] and SF-01[ESD]. This product offers a convenient way to dispense precise amounts of a variety of liquids without dripping, spilling or waste. Leak Proof Needle Flux Dispenser meets the requirements of ANSI [J-STD-001B] and has the capacity of 2 oz [59 ml].