Patent ID: 9207163
Filing Date: 2015-12-08
Classification: G01N

Abstract:
1. A manufacturing method of a glass tube for examining a specimen, comprising the steps of: holding a slender glass tube formed with an opening at a lower end of the glass tube for examining a specimen in the upright state; heating an upper end of the glass tube for examining a specimen with a burner while simultaneously rotating the glass tube for examining a specimen, and collecting melted glass at a central part of the upper end of the glass tube for examining a specimen to form a bottom of the glass tube for examining a specimen to be in a convex state upwardly or downwardly, and while simultaneously blowing in compressed air from the opening at the lower end of the glass tube for examining a specimen; varying the compressed air pressure so that an inner surface of the bottom of the glass tube for examining a specimen is formed to be a round-state convex part in a direction toward the opening at the lower end of the glass tube for examining a specimen, and an outer surface of the bottom of the glass tube for examining a specimen is formed to be in convex state in an opposite direction from the inner surface of the bottom of the glass tube for examining a specimen; and filling the glass tube for examining a specimen with a small quantity of reagent.