supply of low strength proppant jan 2021 , intermediate strength.-1. physical state sieve analysis:size designation 2. fraction retained between the designated sieves sizes, percent by mass 3. fraction retained on astm no. 8 or equivalent sieve, percent by mass 4. fraction retained on astm no. 16 or equivalent sieve, percent by mass 5. fraction retained on astm no. 30 or equivalent sieve, percent by mass 6. fraction passing through astm no. 30 or equivalent sieve, percent by mass 7. fraction passing through astm no. 50 or equivalent sieve, percent by mass 8. fraction passing through astm no. 100 or equivalent sieve, percent by mass 9. sand grain clusters, percent by count 10. krumbein sphericity 11. krumbein roundness 12. acid solubility in 12 (w/w) hcl + 3 (w/w) hf on dry basis, percent by mass 13. turbidity on dry basis, ntu 14. crush resistance at 3000 psi fines, percent by mass: 15 crush resistance at 4000 psi fines, percent by mass 16. crush resistance at 5000 psi fines, percent by mass 17. clay and soft particle content, percent by volume
