One Minute Technical Support on Containers - Weight and Volume

A new post that will take no more than 1 minute to read but give you a HUGE advantage in your adventurous making!

A comparison of volume and weight.

All container manufacturers sell their containers by the volume they hold. Let me repeat, all container manufacturers sell their containers by the volume they hold.

Things to know:

1. NET WT – this means net weight. GROSS weight is the weight of all items, gross meaning all things that are visible (container, lid, label and contents). Net means only the valuable contents, not the container or other packaging. Net means only what you can use (for instance: a lip balm tube NET WT is only the amount of product above the internal pusher, not everything the tube can hold). To measure weight use a scale or balance.
2. FL OZ – this means fluid ounces. FL OZ are how containers are supposed to be marketed, however, there are sellers that don’t understand this concept. Headspace is the amount of space, near the head of the bottle, which is to allow for expansion during filling or transit. In home canning, glass jars have head space to allow the contents to expand during the heating process. All containers have some amount of headspace. To measure volume use measuring cups, teaspoons, tablespoons and graduated beakers.
3. In the USA the Imperial measure, along with the metric equivalent, should be listed on each product sold regardless of if the product is sold by weight or by volume.

In the photo above we have our 2 ounce tins. You can find the 2 ounce tins here.

I have shown you a picture of the tins holding Extra Large Salt, fruit seeds, Natrasorb, Ground Luffa and Lanolin Lip Solutions. Every tin is filled to just below the uppermost edge. I don’t want any product to touch the lid. Here are the Volume and Weights corresponding with these products:

I hope this helps to solidify weight vs volume and know why it is important to double check your containers.