Review on UltraSource Vacuum Chamber Pouches Pack Food Service Equipment & Supplies at Restaurant Appliances & Equipment by Tiffany Staley

I've had mixed results with these 6x12 bags. About half of them don't hold a vacuum. When closing the dried chili peppers yesterday, I noticed that the first bag immediately lost the vacuum. I put it in another bag and the chili punched a hole in the bag without even trying to seal it. Eventually, the third bag picked up the vacuum and held it. Another pack of chili was ok with the first pack. I've also lost the vacuum on several bags of raw dried beans. I also bought the same brand in 8 x 12 packs and Vacmaster 10 x 18 packs. No issues with these types of pouches, including vacuum testing on some sharp objects (screws, open utility knife, etc.). Maybe I got an inferior batch of this size.