CHN Prepacked Reduction Tube.Prepacked tubes are a time saving and cost effective alternative to packing your own tubes. They only cost a bit more than the tube and reagents purchased separately and can be used immediately without the need to stock individual reagents. We offer a complete portfolio of consumables, accessories and supplies that deliver optimal performance in measuring the coefficient of thermal expansion (CTE), Tg, and TM in materials. Only the best reagents, tubes and sample vials assure optimum analyzer performance. Every genuine PerkinElmer consumable and reagent is of high quality and designed specifically for your PerkinElmer instrument.