Sealing samples of catalyst and
guidance of third party testing
As usual, there is a provision about sealing samples of catalyst and testing report from the third party in the catalyst technology
agreement between the supplier and the buyer, we are now presenting following guidance.
1. Sealing samples
1.1 There are two main ways of selecting sealing samples: 1. Random sampling by buyer before delivery under participation of both
sides. 2. Random sampling by both sides if any disagreement about the performance of the catalyst in the application process.
1.2 Methods of sealing sample:The samples quantity are decided by both sides or according to the enterprise standard of the
suppliers, and must be more than MOQ of the testing, including activated testing, physical testing such as strength, heat resistance;
chemical character such as activated composition analysis etc.
1.3 There are two formats of sealing samples: complete sealing sample of MOQ for activated and strength testing; or to separate
sealing sample for chemical composition analysis.
1.4. The storage condition of sealing sample should be agreed by both sides, but the buyer must follow the condition suggested by
the supplier.
2.Third party testing
2.1. Testing institution: Usually it will be ok for supplier to provide only inspection report by qualified third party. Any discrepancy,
both sides can negotiate and authorize qualified and competent agency as testing agency. Because of some agency only have
aptitude of strength testing but not have activated testing qualification, or other reasons, there maybe cause to have several catalysts
testing reports. In a word, you can decide testing company according to your testing items or choose the nearest one for rapid testing result.
There maybe not have the qualified testing agency for some testing items especially activity detection, we suggest to select
efficient technology institute or universities. The supplier will feel trouble if buyer insist to get testing report by third party because of
the long testing period and expensive costs.If possible, both sides can discuss further more, to build full set of detection instruments
and equipment, testing processed under the supervision of the buyer.
2.2. The testing methods and reliability of the data: Because of different testing methods for different testing items, The third party
must adopt the testing methods which is agreed by buyer and supplier. To verify the reliability of the testing data, both sides can
grind the sealing samples into powder and send to the third party for testing in different time. We can obtain date error and credibility
after comparing two testing reports.
2.3. The adoption of the accuracy of the third party: Currently we think it will not be more than 60% for the accuracy of the date
concluded by the domestic qualified institutions. Firstly it is mainly because of the quality of the inspectors, and their working attitude.
Many of current detection project qualification is still monopolized in the Bureau of technical supervision or its subordinate
departments, it will cause many errors because some inspectors lack of professional ethics. Secondary, it is caused by the purity
of testing reagents, hand- made sample errors or instrument errors.
If you want to know the testing levels of the testing agency, you can obtain the datas by self testing and self-made known catalyst chemical composition of the samples made under supervision of both sides before sending to the third party,
You can finally decide the adoption of the institution comparing your data.