246results about How to "Overcoming the problem of being easily contaminated by environmental microorganisms" patented technology

The invention discloses a split-out anti-leakage quantitative visible easy-pressed counting surface sampling culture dish. The culture dish comprises a dish bottom and a dish cover, a horizontal cracking gap and a longitudinal cracking gap which are formed in a first dish bottom side wall can be split under stress to allow a movable bottom side wall to be released causing the height of the first dish bottom side wall to be lower than the plane of a solid substrate, so that the sampling operation of surface microorganisms is more convenient, in addition, a second dish bottom side wall can prevent culture mediums from leaking from the dish bottom, the observation of micro colonies can be more convenient by arranging an observation window, the pouring volume of an agar medium can be indicatedby scaling lines, and a pressing boss can make the moving of the movable dish bottom side wall more convenient.

The invention discloses an extrusion-type anti-skid hand-held grid-counting surface sampling culture dish. The culture dish comprises a dish bottom and a dish cover, wherein a second buckle and a first buckle which are of a stable chimeric structure are arranged on the dish bottom, when under stress, the chimeric structure can loosen to cause relative movement between a mobile dish bottom side wall and a first dish bottom side wall, under cooperation between first hand grabs and second hand grabs, the dish bottom and the dish cover can be unbuckled or buckled more conveniently, when multiple culture dishes are placed in a stacked mode, by means of first bulges and second bulges, relative movement between the two adjacent culture dishes can be limited, and by means of grid lines, a bacterial colony counting process can be simplified.

The invention discloses a split-type leakproof height-increased quantitative handheld surface sampling culture dish. The culture dish comprises a dish bottom and a dish cover, and a lateral crack opening and a longitudinal crack opening formed in first dish bottom side walls can be split under stress, so that movable dish bottom side walls are disengaged, the height of the first dish bottom side walls is lower than a plane of a solid medium, and the operation of surface microbial sampling is simpler. In addition, second dish bottom side walls can prevent the medium from overflowing from the dish bottom, pad tables can prevent an agar medium from contaminating a side wall of the dish cover, the cooperation of first graspers and second graspers enables the dish bottom and the dish cover to be opened and fastened more easily, and scale lines can indicate the pouring volume of the agar medium.

The invention discloses a split type easy-to-press handheld surface sampling petri dish based on sector counting. The petri dish comprises a dish bottom and a dish cover. When being stressed, at leastone transverse crack opening and at least one longitudinal crack opening formed in at least one first dish bottom side wall can be split, a movable dish bottom side wall is separated, and the at least one first dish bottom side wall is lower than the plane of a solid medium, so that surface microorganism sampling operation is simpler and more convenient; the dish bottom and the dish cover can bemore convenient to open or buckle by cooperation of at least one first gripper and at least one second gripper; the movable dish bottom side wall can be more convenient to move by at least one press boss, and the counting process of colonies can be simplified by radial lines.

The invention discloses a split type surface sampling petri dish based on grid counting. The petri dish comprises a dish bottom and a dish cover. When being stressed, at least one transverse crack opening and at least one longitudinal crack opening formed in at least one first dish bottom side wall can be split, a movable dish bottom side wall is separated, and the at least one first dish bottom side wall is lower than the plane of a solid medium, so that surface microorganism sampling operation is simpler and more convenient; the counting process of colonies can be simplified by grid lines.

The invention discloses a pressing-out type quantitative surface sampling petri dish, which comprises a petri dish bottom and a petri dish cover. The petri dish bottom is provided with second clampingfasteners and first clamping fasteners, and the second clamping fasteners and the first clamping fasteners form stably embedded structures. The embedded structures can be loosened under stress, so that movable petri dish bottom side walls and first petri dish bottom side walls move relatively. Agar culture medium pouring volumes can be indicated through scale lines.

The invention discloses a cracking-type easy-to-mark grid counting surface sampling culture vessel. The culture vessel comprises a vessel bottom and a vessel cover. When the culture vessel bears force, transverse crack openings and longitudinal crack openings which are formed in the first vessel bottom side walls can crack, so that the movable vessel bottom side walls are disengaged, consequently,the first vessel bottom side walls are lower than the plane of a solid culture medium, and thus surface microorganism sampling operation is easier and more convenient, marking work can be more efficient through marking areas, and the counting process of bacterial colonies can be simplified through grid lines.

The invention discloses a press-out-type leak-proof visual hand-held grid counting surface sampling culture dish which comprises a dish bottom and a dish cover. The dish bottom is provided with a second clasp and a first clasp which are in a stable chimeric structure. The chimeric structure can be loosened when a force is applied, so that a movable dish bottom side wall moves relative to a first dish bottom side wall. A second dish bottom side wall can prevent a culture medium from overflowing out of the dish bottom. Through cooperation of a first grasping handle and a second grasping handle,the dish bottom and the dish cover can be more convenient to open or close. An observation window facilitates the observation of minute colonies, and grid lines simplify the counting process of bacterial colonies.

The invention discloses a press-out leakage-proof increased anti-skid easy-to-press surface sampling culture dish. The culture dish comprises a dish bottom and a dish cover, and the dish bottom is provided with a second buckle and a first buckle which are of a stable embedded structure; under stress, the embedded structure can loose, and a movable dish bottom side wall and a first dish bottom sidewall can move relatively. In addition, by means of a second dish bottom side wall, the phenomenon that a culture medium overflows from the dish bottom can be prevented; by means of a pad table, the phenomenon that an agar culture medium contaminates the dish cover side wall can be prevented; when multiple culture dishes are stacked, a first protrusion and a second protrusion can limit relative movement of the two adjacent culture dishes; by means of a platen, better convenience can be brought to movable dish bottom side wall movement.

The invention discloses a cracking type quantitative easy-to-mark easy-to-press square counting surface sampling culture vessel. The culture vessel comprises a vessel bottom and a vessel cover. When the vessel is stressed, a transverse crack opening and a longitudinal crack opening formed in the first vessel bottom side wall can crack, so that the bottom side wall of a movable vessel can be disengaged; the height of the first vessel bottom side wall is lower than the plane of a solid culture medium, so that the surface microbial sampling operation is simpler and more convenient. Through a marking region, the marking work can be more efficient; scale lines can be used for indicating the pouring volume of an agar culture medium; through a press table, the moving of the bottom side wall of the movable vessel can be more convenient; through square lines, the counting process of bacterial colonies can be simplified.

The invention discloses an extrusion-type easily-marked easily-pressed hand-held fan-shaped counting surface sampling culture dish. The extrusion-type easily-marked easily-pressed hand-held fan-shapedcounting surface sampling culture dish comprises a dish bottom and a dish cover; the dish bottom is provided with a second buckle and a first buckle; a stable inosculating structure is formed by thesecond buckle and the first buckle; when the stable inosculating structure is loaded with force, the second buckle and the first buckle are disconnected, relative movement of a movable dish bottom side wall with a first dish bottom side wall is realized; the cooperation of a first clamping edge and a second clamping edge is capable of realizing convenient disconnecting and connecting of the dish bottom and the dish cover; a marking zone is capable of increasing the efficiency of marking operation; a pressing platform is capable of providing movable dish bottom side wall movement with convenience; and radiative lines are adopted to simplify bacterium colony counting process.