supply of sr ph code 346350 ) vacutainer needle with visibility of blood entry 21g for multi-sample collection should have the following specifications: 1. the designing of the needles should be such that it can able to minimize the pre- analytical variability throughout the specimen collection and handling process to ensure reliable results and should be suitable for faster procedures. 2. the needles should be suitable for closed- system blood collection i.e drawing blood directly from the vein into vacuum collection tubes to prevent exposure of atmosphere. 3. the needles should be suitable for multi- sample collection. 4. needles should be sterile, double- ended with a sleeve covered safety valve for use with vacutainer tube holder and vacuum blood collection tubes. unit:no achd / surg.store / rh / per , sr tamil nadu 90480.00 numbers acms / drug stores / rh / pgt , kerala 18000.00 numbers sr