Big Blu Sub Zero is the most durable product of its kind for leak detecting under extreme conditions. Our temperature rating is -30 to 200 deg F. Bubbles and foam will keep regenerating where other low temp products give out, freeze or become gelatinous. Sub Zero maintains a uniform viscosity over this temperature range remaining fluid on the coldest of days while remaining bulky and resistant to evaporation on hot discharge lines. Technicians who are familiar with the performance of The Original Big Blu solution will appreciate how we kicked it up a few more notches.

Refrigeration Technologies® Big Blu Subzero Microleak Detector, 32 oz, Spray Bottle, Composition: 50% 1,2-Propanediol, Liquid, Blue, Characteristic, 7 - 8 pH, Greater Than or Equal to 1.05 g/ml Density Specific Gravity, Greater Than or Equal 100 deg C Boiling, Less Than or Equal 500 g/L VOC

• Big Blu Subzero is freeze protected to -30 deg F
• Non-toxic
• Non-corrosive
• Biodegradable
• Oxygen safe

• SDS https://assets.unilogcorp.com/267/ITEM/DOC/Refrigeration_Technologies_RT150S_SDS.pdf