I'm a newbie to these forums, but I've been lurking here and fermenting for a while. I just discovered what looks like a great product. I don't know the person who makes these, but I have just ordered some of his weights and I wanted to share it here and help him promote them. Below is the email info I received.
"I have a brand new product which is very useful in lacto fermented vegetables made in a jar.
They are glass canning jar weights made especially to use in lacto fermented preserving. The standard size fits perfectly into a standardcanning jar, and I also have wide mouth size for wide mouth jars.
This is a brand new product that was developed to keep the vegetables below the level of the the brine solution in the jar, which is really about the only cause of possible failure when using lacto fermenting preserving methods.
You get 1 pound of weights, which is approximately 9-10 standard weights, or 6-7 wide mouth weights for $9.95 plus shipping.
They are made of non iridized glass and are completely inert and
will not leach chemicals into your ferments.
They are listed on Ebay, just search for 'lacto ferment glass jar weights'.