Kerr Brand, Mason Canning Jars have been used for years by mushroom growers to hold a variety of substrates. We offer durable and reusable wide mouth canning jars. These glass jars can withstand steaming and pressure cooking over and over again which will ensure years of use. Each case includes metal lids and rings. Or if you'd like, try some plastic canning jar lids. They are easy to clean, dishwasher safe and they don't rust!

If you're working with non-grain substrates, look at our water bath/canning pots. They work great with these jars!

Please be sure to check out our synthetic filter discs which fit precisely over the jars mouth. The combination of filter discs and the jars are sure to give your substrate a fresh, clean and effortless gas exchange.

Below is a list of specifications for each of the different wide mouth jars:

Wide Mouth Canning Jar, 1/2 Pint
Case of 12 jars includes 2-piece caps.
Mouth size is 3-1/8" diameter.
1/2 pint equals 1 cup or 8 fluid ounces.

Wide Mouth Canning Jar, 1 Pint
Case of 12 jars include 2-piece caps.
Mouth size is 3-1/8" diameter x 4-1/2" high
1 pint equals 2 cups or 16 fluid ounces.

Wide Mouth Canning Jar, 1 Quart
Case of 12 jars include 2-piece caps.
Mouth size is 3-1/8" diameter x 7" high.
1 quart equals 2 pints or 4 cups or 32 fluid ounces.

Wide Mouth Canning Jar, 1/2 Gallon
Case of 6 jars includes 2-piece caps.
Mouth size is 3-1/8" diameter. 9-1/4" height.
1/2 gallon equals 2 quarts or 4 pints or 8 cups or 64 fluid ounces.