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Container with the outer dimension measured in gastronorm standard is usually called GN Pan. This standard is well recognized in worldwide catering industry.
It is used for cooking, keeping food warm / cold, and storing food.
First of all, you need to determine the size and number of GN Pan required. This really depends on your usage and purpose. The requirements can be very different for home users (kitchens) and restaurant users (commercial kitchens)
Below is GN Pan size chart:
GN Pan 1/1 – 530 x 325mm (Full GN)
GN Pan 2/1 – 650 x 530mm (Double GN)
GN Pan 2/4 – 530 x 162mm (Two-Quarter GN)
GN Pan 2/3 – 354 x 325mm (Two-third GN)
GN Pan 1/2 – 325 x 265mm (Half GN)
GN Pan 1/3 – 325 x 176mm (One-third GN)
GN Pan 1/4 – 265 x 162mm (Quarter GN)
GN Pan 1/6 – 176 x 162mm (Sixth GN)
GN Pan 1/9 – 108 x 176mm (Ninth GN)
The above chart gives you an idea of the size and can help you to determine the number of GN Pans needed for various sizes. And then you need to consider what volume (depth) fits your requirements. Some of you may mix and match different sizes. And some may even have to consider whether to use gn pan lid, ladle, and spatula.
Its strong in nature characteristic makes it suitable for a wide range of temperatures from oven cooking to chilling. It is durable as well. Multitasking is also one of its merits. You can use the same stainless steel gn container all the way from food preparation, cooking, and even food presentation. This saves time for swapping and cleaning the food pans.
It is a strong material with a high melting point. Due to its transparency, it is a good choice for food storage as you can easily see what is inside. It is also microwave safe but cannot be used with open flame cooking or used in the oven.
It is ceramic-like material and not as strong as stainless steel and polycarbonate. It is not good for conducting heat. Therefore it is not suitable for cooking or used in the oven. Melamine Gastronorm Containers are usually for chilling, food storing, and buffet display setting.
To conclude, the environment, the purpose of usage, and food type are the criteria in choosing GN Pan.
You can consult your catering vendors nearby for professional advice.