There are lot of impure refrigerants in the market
It is necessary to identify them and purchase the pure refrigerant.
If not, there can be damages to the system.
May not be able to reach the required temperature.
Maintenance and running cost will go up.
Therefore, it will be an additional burden to the industries.
Cost of production will go up.

Firstly, the refrigerants are synthesized.
Then they need to be purified to remove by products.
There can be many stages of purification to follow.
The cost of purification is expensive and time consuming
No one is trying to get 100% purity as it is very expensive.
Therefore, it is necessary to be satisfied with 99.9++ % range
(Some people cut down the purification stages and release the refrigerants to the market.)
(They are the impure, low quality and cheap refrigerants in the market)
(The supplier or manufacturer could not be a listed(registered) company)
Hand held identifiers are not that accurate.
Some people mix certain chemicals to the refrigerant to show the 100% purity.
Therefore, the results of hand held identifier cannot be believed.
The identifiers in the production plants are accurate than the hand held identifiers.
But for more accurate results, it is necessary to carry out laboratory tests.
The latest test method is AHRI 700/2017
The purity is very critical for the refrigerants for low temperature applications.
(Such as R-134a, R-404A, R-507, R-23, R-508B.)

Before purchasing the following steps could be followed to identify the pure refrigerant.

Check for the brand name
If “REFRIGERANT” is shown as the brand name they cannot be trusted.
Therefore, it is necessary to look for branded refrigerants.
Even branded refrigerants need to be verified.
Look for the web address print on the box or can.
Check the website in the internet.
(Scanning of QR code would be another option)
If the details could be found on the website, the first step would be ok.
If such a website be cannot find in the internet, it will be a fake product.
(There are some false web addresses print on the box or container.)
Some people copy famous brand names
Print the famous website on the box.
In such a situation, it needs to be verified.
Sometimes by appearance of the packing, it can be identified
Can check for batch no’s etc.
For further verification, contact the actual manufacturer.
By checking the appearance of the cartons, containers and batch numbers
manufacturer can verify his product.
There are quite a few refrigerant manufacturers in the world.
But there are several brands of refrigerant.
But a genuine brand is registered in the country of manufacturing.
Therefore, it is necessary to check for brand registration certificate.
Also need to get the refrigerant manufacturer’s confirmation for the brand name.

The most important thing to follow is the analysis report given by an independent accredited
test laboratory.
(It is more reliable than the manufacturers test results.)
The reference number printed on the analysis could be used for verification.

The quality and purity of the refrigerant cannot be decided by the performance of the ref. system
Some people used to ascertain the quality by usage and the performance of the refrigeration.
As the conditions are varied, they cannot take in to consideration.
If such results are reliable no need to spend waste amount of money on testing laboratories.

Always, it is necessary to purchase factory filled refrigerant cans.
Cans filled by re-fillers are not reliable.

To find the authentic local distributor, check with the manufacturer and obtain distributors contact details.