This is a review of the Lifeline’s 7500 64 oz, Double Wall Insulated Stainless Steel Growler.
Front side of the label. It Reads: Vacuum-Insulated Double-Wall. Vacuum insulated to keep liquids hot or cold all day. Double-wall technology prevents condensation & keeps outside wall of bottle at a comfortable temperature. Lightweight 18/8 stainless steel is 100% recyclable It has no liner and will not retain odor or taste. Stainless Steel. BPA-free.
For size comparison – next to a standard growler
Temperature Test 1:
Next, I placed this outside. It was a warm day. My CDN DTQ450X read 87.9 deg F at 6:17 PM
The contents were still at an amazing 45.5 degrees. That’s a loss of 2.9 degrees over nearly 3 hours of sitting in 87.9 – 79.1 deg F ambient temperatures. That ends up being an average of 1.02 degrees per hour. That’s crazy.
Temperature Test 2 – Side by Side Comparison with Standard Growler:
For this test I decided to ensure that each growler held the same mass of water. I did that by weighing both growlers and then subtracting the weight of the growler itself using the tare feature on my Escali Primo scale. Note that while the next two pictures were taken during that process, they do not show the weight of water that was used. I’m including them only so that you can compare the weight of a standard growler vs this stainless growler.
After getting the same amount of water in each growler I decided to chill these down in my fermentation deep freeze. Figuring that this would be a good way to get the contents close in temperature. I let these chill for a few days. They did get close in temperature but they were not identical. The standard growler came out at 37.5 deg F and the stainless growler came out at 39.2 deg F. Why the difference? I’m not sure, but I theorize it’s related to the insulation capabilities of the stainless growler.
The starting ambient temp was 82.1 deg F. I picked up a Taylor 9940 Thermometer for this test because of it’s water proof probe and it’s long cable lead.
In the first period of the test, from 6:03 PM to 7:50 PM. The standard growler lost 24.2 degrees vs the stainless growler’s loss of a mere 2.2 degrees. That’s a difference of 22 degrees! 1.23 degrees per hour vs 13.57 degrees per hour. By the time you get to the last period, the standard growler is looking quite a bit better, but the fact is that it’s almost hit ambient temperature. In all over a span of 3.8 hours, the stainless growler lost mere 4.4 degrees.
I tried to perform these two tests in semi-extreme environments. Most of the time you won’t be just sitting a growler out in 80 or 90 degree weather. Performance in more realistic room temperature scenarios should be all the better.
The question has arisen as to whether it is designed to hold carbonated beverages. I contacted the manufacturer and was told that yes indeed it is designed to work with carbonated beverages. I’ve also tested this myself. I chose to test with carbonated soda water, thinking that the high carbonation level would be a good test. I let the carbonated water sit in the growler for four days. It worked great.
This is a great growler. It looks amazing and the insulation performance blew me away. It also makes it into places that glass isn’t welcome like a pool or beach.
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