The United States GRACE silica gel (923) is the GB/T11132 and ASTM D1319 standards for the use of specialized for the analysis of gasoline hydrocarbons in the purity of high-purity silica gel chromatography. With a very narrow pore size distribution with an average pore size of 32A and an amorphous granular.
The United States GRACE dyeing silica gel (923) by the United States has more than 150 years of history of the professional production of silicone plant GRACE production. All products are imported. All the relevant properties of the product are in accordance with the specifications of the product.
The United States GRACE staining gel (grade 923) with drum or plastic bottles, 2kg above the barrel, 500g plastic bottle.
The company has imported from the United States fluorescent indicator (silica gel, staining) adsorption column diameter precision, price concessions!
National Quality Supervision Bureau issued national standard "GB-17930" unleaded gasoline vehicle, in addition to the car with gasoline in the lead-free requirements, the new standard also increased the index of aromatics, olefins content, and put forward clear requirements. The determination of aromatic and olefin content, using the national standard GB-11132-2002 "petroleum products Determination of liquid hydrocarbon law" (fluorescent indicator adsorption), the use of the standard equivalent to ASTM standard ASTM D1319-99, the fluorescent indicator so that the liquid petroleum products the main hydrocarbon show on the adsorption column, silica gel properties and the index has a significant impact on the analysis method, directly related to the separation effect in all components of the sample, determines the accuracy of the results.
Our company is the ASTM D1319 standard recommended GRACE silica gel (923) (GRACE) agents and the corresponding equipment suppliers, professional engineering and technical personnel responsible for technical support