Freeze Drying Indicator: 500 ml This colorimetric indicator reagent changes color during the freeze drying process giving the user a real-time measurement of dryness. This formulation combines the protein stabilizers with an indicator dye. It can be used in parallel with the standard reagent to show when freeze drying is completed. The indicator reagent should be run along side of critical samples and not used as the lyoprotectant itself (protein lyophilization with the indicator should be discarded). This reagent is also useful for mapping and validating freeze dryers. It can be used as a visual tool for operational qualification of large and small freeze dryer units. It is filter sterilized and aseptically bottled in 500 ml PET bottles. Product Flyer