The phrase "available grades of" is correct and usable in written English.
It can be used when discussing different levels or categories of something, such as products, materials, or academic assessments.
Example: "The store offers a variety of available grades of paint to suit different needs and preferences."
Alternatives: "offered levels of" or "provided categories of".
One problem is a mismatch between the available grades of crude oil and refining technology.
Since 2000, the industry has doubled the available grades of steel and increased strength levels by 50 to 100 percent.
Few commercially available grades of adhesives were characterized.
Importantly, this study examines the use of several available grades of carbon black for their relative suitability to perform as supports for FePc in MFC formats.
There are several commercially available grades of AHSS, such as dual-phase steel, which is heat treated to contain both a ferritic and martensitic microstructure to produce a formable, high strength steel.
The commercially available grades of solvents and reagents were found to be of adequate purity.
We purchased the highest available grade of other reagents from Fisher Scientific (Atlanta, GA) and Sigma Chemical Company (St . Louis MO).
Primary magnesium is available in grades of 99.90, 99.95, and 99.98 percent, but, in practice, grades 99.95 and 99.98 have only limited use in the uranium and nuclear industries.
The clinico-pathological surrogate definitions of subtypes as adopted by the Panel are summarized in Table 2, and their broad implications for systemic treatment selection are described in Table 3. > -wrap-foot> > -wrap-foot> high 21-gene RS (i.e. >25), if available; 70-gene high risk status, if available; grade 3 disease; involvement of four or more lymph nodes (a minority required only one node).
All other chemicals were from Sigma, unless stated differently, and of highest available grade.
All reagents and solvents used were of commercially available grade and were used without any additional purification.
