1. Whether the quality parameters meet the requirements
High quality biological buffer Tris must have the following characteristics: pKa value between 6 ~ 8; good solubility in water system
It has little solubility in organic solvents; it has less permeability to biofilms and is less affected by concentration, temperature and ions in medium, and can form soluble complex with cations; it has excellent stability in dry or solution state, and can resist enzymatic or non enzymatic degradation; it has very small absorption value to visible light and ultraviolet light.
2. Is the stock sufficient
A lot of customer consultation volume is above ton level, if there is not enough spot as support, on the one hand, there will be a lot of loss
Important customers, because it is difficult to have the willingness to continue the negotiation. On the other hand, if an order needs to take a long time to reach the customer's hands if it takes a long time for an order to arrive at the customer's hand under the condition of insufficient goods, the monthly output of Desheng can reach the ton level The goods are very timely, so there is no need to worry about it.
3. is the after-sales service guaranteed
Whether we buy diagnostic reagents or any other products, we would rather spend more money than choose a manufacturer with after-sales guarantee
Home. In this way, when we buy products, we will have a sense of steadiness in our hearts. The same is true for Tris, which is more reliable for businesses with service commitment. If they can guarantee that they can return and exchange without worry if they have quality problems, it shows that they are very trustworthy. Even if there are problems in the use process, they will not worry at all.
4. Whether to adopt the optimal scheme to synthesize Trometamol
There are two synthetic methods of Trometamol: direct method and two-step method. However, the yield and cost of Trometamol produced by direct hydrogenation method are lower than those by two-step method. However, the purity of Trometamol produced by direct hydrogenation method is high, which meets the requirements of reference reagent for purity of Trometamol, and the process is stable and reasonable, which is especially suitable for the production of kilogram grade Batch products, the process is simple and reasonable, product pass rate is high.
