21. Military ammunition often has thicker brass, and harder primers . 22. Reviewers praised it as an exciting alternative to traditional primers . 23. Berdan primers have remained essentially the same functionally to the present day. 24. Disadvantages of mercuric primers became evident with smokeless powder loadings. 25. Some thermal cyclers are equipped with multiple blocks allowing several different primers . 26. Further there were minor developments regarding the projectiles, sealing and primers . 27. The project produced a number of primers and translation work. 28. Therefore, the primers become depleted as the reaction proceeds with time. 29. Some primers do not contain preservative, oil or fragrance. 30. Novel primers have been designed to detect these genes in environmental samples.
