Ok, how much does 12 Tattler lids cost now? Let’s say they are $19.99/12 like Walmart has. I just bought Golden Harvest at Walmart at $1.47 for 12 lids, that’s 13-14 uses compared to Tattler prices. I can’t justify the cost.
Unless I’m missing something…which I could be.
Tattler at WalmartWalmart's the problem. You can buy them direct from Tattler for half that.
TATTLER12 pack is $10 something, at that I can use 7 of my 12 packs, and I throw mine away. No need to baby the rings or seals. I still don’t see an advantage.
I’m not knocking Tattler, I just don’t trust them sealing over time.
From
this website:
Concerns about Tattler Reusable Canning Lids
There are three primary concerns about Tattler Lid – formaldehyde, seal failure, and air trapped in the headspace.
Formaldehyde
The Natural Canning Resource Book notes concerns about Tattler Lids:
“Tattler lids are composed of polyoxymethlylene copolymer, an acetal copolymer. …
(The author's father, a chemist) noted that the copolymer is made from a trimer of formaldehyde called trioxane and other compound variations. Formaldehyde is a highly-toxic substance long known to be carcinogenic.
Some of the secondary additives are also potentially dangerous to human health and the environment.”
The book continues to give detailed evidence of uncombined formaldehyde in the lids.
From the Tattler website:
Many questions have been asked about the existence of formaldehyde in Acetal Copolymer. While it is true formaldehyde is present in trace amounts, research proves it is only released at very high temperatures.
Heating our brand of acetal copolymer above 460 degrees F (238 C) should be avoided.
Here is my concern:
Most of the formaldehyde is bonded and can only be released at extremely high temperatures. But could those trace amounts of unbonded formaldehyde shed into your food with normal canning use?
Risks should be minimal for home food preservation. The food inside the jar is not normally in contact with the lid.
Higher Seal Failure Rates
I noticed a significantly higher failure rate than standard canning lids, both during and after processing.
Though several studies of Tattler lids were proposed, I found results for only one.
In 2014, a University of Georgie grad student, Geetha Sivanandam, tested three types of canning lids – metal, plastic and glass. Three types of food (tomatoes, apple, and carrots) were tested under different conditions.
All three types of lids produced acceptable results, but only traditional metal lids produced 100 percent seal rate during processing and storage.
Retained Oxygen in the Headspace
Elizabeth L. Andress, Professor and Extension Food Safety Specialist from
The University of Georgia notes that there may be quality issues due to retained oxygen in headspace.
Because you finish the seal on Tattler lids when you tighten them, you don't know if all the oxygen is out of the headspace.
With metal canning lids, the vacuum creates the seal.
I suspect this was the problem with this moldy jam canned using Tattler lids.
Some sites suggest increasing headspace by 1/4 inch when canning with Tattler lids to reduce failure rates. This may increase the risk of retained oxygen.