Abstract: A pump tube unit according to the present invention includes a pump tube for sending and drawing liquid, an upstream-side water supply tube connected to an upstream-side end portion of the pump tube, a downstream-side water supply tube connected to a downstream-side end portion of the pump tube, and a bypass water supply tube, connected across the upstream-side water supply tube and the downstream-side water supply tube, and returns a part of the liquid flowing through the downstream-side water supply tube to flow back into the upstream-side water supply tube. The bypass water supply tube has a small-diameter portion in a predetermined range except for both end portions of the bypass water supply tube. The small-diameter portion has an inner diameter smaller than an inner diameter of other range.

Abstract: A syringe protecting device equipped with an outer cylinder, an inner cylinder and a spring, wherein, when the spring is released from its compressed state, the inner cylinder is moved rearward with respect to the outer cylinder so that a syringe needle is stored inside the outer cylinder, and the syringe protecting device further equipped with a releasable pre-locking mechanism for fixing the inner cylinder to the outer cylinder while maintaining the spring in the compressed state in the front-rear direction, wherein, the pre-locking mechanism fixes the inner cylinder before movement to the outer cylinder by engaging the protruding sections of the ring with the engaging sections of the through groove sections.

Abstract: A syringe protecting device equipped with an outer cylinder, an inner cylinder and a spring, wherein, when the spring is released from its compressed state, the inner cylinder is moved rearward with respect to the outer cylinder so that a syringe needle is stored inside the outer cylinder, and the syringe protecting device further equipped with a releasable pre-locking mechanism for fixing the inner cylinder to the outer cylinder while maintaining the spring in the compressed state in the front-rear direction, wherein, the pre-locking mechanism fixes the inner cylinder before movement to the outer cylinder by engaging the protruding sections of the ring with the engaging sections of the through groove sections.

Abstract: To provide an emulsion preparation device capable of forming an emulsion in a chemical liquid of diverse composition and further realizing a relatively low sliding resistance. An emulsion preparation device (1) provided with a filter part (10), wherein: the filter part (10) is constructed from first and second, two mesh parts (31) and (33) and fibers (32); and the fibers (32) are loaded into a space (30) between the first mesh part (31) and the second mesh part (32).

Abstract: To provide an emulsion preparation device capable of forming an emulsion in a chemical liquid of diverse composition and further realizing a relatively low sliding resistance. An emulsion preparation device (1) provided with a filter part (10), wherein: the filter part (10) is constructed from first and second, two mesh parts (31) and (33) and fibers (32); and the fibers (32) are loaded into a space (30) between the first mesh part (31) and the second mesh part (32).