What is the concept of food grade, which is equivalent to analytical purity or excellent purity in c

The analysis in chemical reagents is pure.

Or excellent grade pure refers to the level of purity of the chemical reagent.

Food grade is not for a reagent, but means: the product substance in contact with food must meet the following conditions: meet good manufacturing practice (goods GMP); When the product comes into contact with food, it must not:

1.Release of ingredients that pose a danger to human health.

2.Resulting in unacceptable changes in the composition of the food product.

3.Reduce the sensory properties brought by food (change the taste, smell, color, etc. of food)1935 2004 EC is the most basic general standard for all EU countries, so it is also relatively favorable in cost, such as: plastic food container products, the test cost is only 3500RMB, and the test items include:

Deionized water. Acetic acid, alcohol, olive oil and other full set of migration test items.

If the product is tested, the relevant mark can be displayed on the packaging or packaging surface, indicating that "the product is suitable for packaged food". Successfully sell your products to the European market. At the same time, your products can also attract more customers with good quality, gain a stronger competitive advantage in the same industry, and obtain big profits with small cost.

1935 2004 EC Regulation Scope of Application and Targeted Product Scope:

1) Tableware: metal tableware, plastic tableware, wooden tableware, disposable tableware, etc.

2) Kitchenware: cutting boards, seasoning pots, stainless steel pots, non-stick pots, iron pots, enamel pots, etc.

3) Cooking utensils: steamers, shovels, spoons, etc.

4) Insulated containers: stainless steel thermos cups, thermos pots, thermos flasks, etc.

5) Small kitchen appliances: blenders, egg beaters, coffee machines, etc.

It should be two independent concepts, for example, sucrose has industrial grade, food grade (human use, harmless to health), chemical reagent grade, and chemical reagent grade includes analytical pure, excellent pure, chemical pure and so on.

Neither. Analytical purity refers to purification in ordinary industrial grade, and food grade is that it can be mixed into food, which are two completely different concepts.

1. Different properties: chemical purity is used for general chemical tests, with fewer impurities, which does not hinder the experimental requirements. The analysis is purely a reagent for analysis and determination, with fewer impurities and does not hinder the analysis and determination.

Superior grade reagents contain trace (or even trace) amounts of substances with UV absorption.

2. Different uses: excellent grade pure is used for precision analysis and testing. The analysis is purely for general analytical testing. Chemically pure is used for general chemical testing.

3. The label color is different: the excellent pure label is dark green, and the analytical pure label is golden red. Chemically pure is labeled as medium blue.

The difference between analytically pure, chemically pure, and high-grade pure in chemical reagents is:

1. The purity is higher in order: chemically pure, analytically pure, and high-grade pure;

2. Different codes: chemical pure (CP), analytical pure (AR), excellent pure (GR);

3. The label color is different: chemical pure (blue), analytical pure (red), excellent pure (green).

The chemical reagent center is divided into a chemical agent, chemistry, organic chemistry, and a gender of the first class.

The main differences between analytically pure, chemically pure, and high-grade pure are:

1. The difference in purity: the purity of chemical purity is low, the purity of analytical purity is high, and the purity of excellent grade purity is the highest, and its content can reach above;

2. Differences in application: chemically pure, used for general chemical experiments; The analysis is pure, and the application is an analytical experiment; If the purity is high, it can be applied to the impurity analysis test;

3. The difference between cost and selling price: the price of reagents with low purity is low; The higher the purity of the reagent, the higher the selling price;

To put it simply, it's the percentage of this chemical in the total!

Chemical purity, analytical purity, and excellent purity refer to the purity level of the reagent, and chemical purity refers to the general chemical test, with fewer impurities, so you may wish to meet your experimental requirements. Analytical purity refers to the reagent used for the analysis and determination of wild spring, with fewer impurities and no hindrance to the analysis and determination. The superior grade has the highest purity and is generally used for precision analysis tests.

The analysis is purely AR and is red labeled.

Chemically pure is CP is medium blue label.

Superior grade is pure GR is a dark green label.

Generally speaking, the chemical reagents purchased are analytically pure (AR) grade. The sung evils are said to be more common in red.

In addition, there is chromatographic purity, which refers to the standard reagents used in chromatographic analysis, and only the peaks of the specified compounds appear under chromatographic conditions, and no impurity peaks appear.

The codes of high-grade pure silver, analytical purity, and chemical pure reagents are () in the middle of the continent.

Correct answer) Feast.

The code names of excellent grade pure, analytical Ming Qingdan pure, and chemical pure test agent are in order.

GR, AR, CP (correct answer).

ar、gr、cp

cp、gr、ar

GR, agitated CP, AR