(1) Appearance:

1, the salt bag is airtight and absorbent, and there are no small holes in it.

2. The packaging of desiccant is breathable and absorbent, and there will be holes in the outer packaging layer, and the words desiccant will be marked.

(2) Open the package and check:

1, and the salt is fine crystal.

2, desiccant common there are two kinds:

(1), a kind of quicklime desiccant, white block, become powder after be affected with damp.

② One is silica gel desiccant. Silica gel is colorless and transparent balls, some of which are colored and look like candy.

Second, eat:

(1) If it is packed in salt bags, it is edible. Generally, salt packets are filled with salt, monosodium glutamate and seafood powder, which belong to seasoning packets, similar to those in instant noodles. It is mainly used to make seaweed soup, adding some seasoning to play a seasoning role.

(2) The desiccant in the laver bag is used for dehumidification and moistureproof, and cannot be eaten.

Extended data

1. Desiccants refer to substances that can remove water from wet substances, and are usually divided into two categories:

1, chemical desiccant:

Chemical desiccants, such as calcium sulfate and calcium chloride, are dried by combining with water to form hydrates.

2. Physical desiccant:

Physical desiccants, such as silica gel and activated alumina, are dried by physical water absorption.

Second, the use of classification:

1, medicine and health care products.

2. Biochemical reagents.

3. Special desiccant for food industry.

Third, the difference between the application environment:

1, used in small environment:

Desiccant is placed directly in bottles, cans or other closed pouches to keep the articles in the small environment dry.

2, used in the central environment:

The desiccant is directly placed in the packed carton (or packaging barrel or packaging bag) to avoid the items in the package from getting wet.

3, the use environment:

Desiccant is directly used in similar warehouses and containers to control the humidity of the environment.

References:

Baidu encyclopedia-desiccant